Index| Group | Where | Number of Adherents |
% of total pop. |
Number of congreg./ churches/ units |
Number of countries |
Year | Source | Quote/ Notes |
|---|---|---|---|---|---|---|---|---|
| Catholic | USA | 25,000 | 1.14% | - | - | 1763 | Mead, Frank S. (revised by Samuel S. Hill), Handbook of Denominations in the United States (9th Ed.), Abingdon Press: Nashville, Tenn. (1990); pg. 217. | "In 1763 there were fewer than 25,000 Catholics in a population of 2.2 million, and they were under the jurisdiction of the vicar apostolic of London. " |
| Catholic | USA | 20,000 | 0.57% | - | - | 1776 | Chalfant, H. Paul, et al. Religion in Contemporary Society (3rd Ed.); Itasca, Illinois: F.E. Peacock Publishers (1994); pg. 138-139. | "in 1776... the new nation was Christian. (For most Americans this meant Protestant Christian: out of a population of approx. 3.5 million, only about 20,000 were Roman Catholic and only about 6,000 were Jewish. " |
| Catholic | USA | - | - | 56 units |
- | 1776 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); [Orig. source: Paullin (1932)]; pg. 25. | Table 2.1: "Numbers of Congregations per Denomination, 1776 " |
| Catholic | USA | 25,000 | - | - | - | 1776 | Herberg, Will. Protestant-Catholic-Jew: An Essay in American Religious Sociology; Garden City, NY: Doubleday & Company (1960); pg. 137. | "At the time of the Revolution there were perhaps 25,000 Catholics in the colonies--16,000 in Maryland, about 6,000 in Pennsylvania, and the rest scattered. " |
| Catholic | USA | 23,000 | - | - | - | 1780 | Spence, Hartzell. The Story of America's Religions; New York: Holt, Rinehart and Winston (1960) [1st printing 1957]; pg. 96. | "As late as 1757, there were only 1,365 adult Catholics in Pennsylvania, and only a few dozen in New Jersey. By the end of the Revolution, American Catholics numbered perhaps 23,000, of whom half were in Maryland, 7,000 in Pennsylvania... " |
| Catholic | USA | 40,000 | 1.00% | - | - | 1789 | Herberg, Will. Protestant-Catholic-Jew: An Essay in American Religious Sociology; Garden City, NY: Doubleday & Company (1960); pg. 137. | "In 1789... the first dioceses in the U.S... extended over all the states and teritories, with a Catholic population of about 40,000 in a total of some 4,000,000. " |
| Catholic | USA | 40,000 | 1.00% | - | - | 1789 | Wuthnow, Robert. The Restructuring of American Religion: Society and Faith Since World War II, Princeton, NJ: Princeton University Press (1988); pg. 23. | "When the first [Roman Catholic] diocese in the U.S. was formed in 1789, the entire Catholic population numbered no more than 40,000 out of a total of some 4 million inhabitants. " |
| Catholic | USA | 35,000 | 0.88% | - | - | 1790 | Bokenkotter, Thomas. A Concise History of the Catholic Church. Garden City, NY: Doubleday & Co. (1977); pg. 348. | "[Carroll] saw his little flock, which at his consecration in 1790 numbered some 35,000 (out of 4 million Americans), grow to nearly 200,000 by his death in 1815. " |
| Catholic | USA | 40,000 | - | - | - | 1790 | Johnson, Paul. A History of the American People; New York: Haprer Collins (1997); pg. 301. | "There had been Catholics in America since the foundation of Maryland (1632), and in 1790 Father John Carroll had been consecrated Bishop of Baltimore with authority over the 40,000 Catholics then in the United States. " |
| Catholic | USA | 50,000 | - | - | - | 1800 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 112. | "Neither Hudson (1981) nor Marty (1984) offers sources for his statistics, but each accepts Ahlstrom's conclusion... Marty offered Catholic membership figures for 1800 to highlight the growth by 1850: 'In 1800 only 50,000 Catholics lived in the United States; by 1850 theirs was the largest church in America (p. 272). " |
| Catholic | USA | 50,000 | - | - | - | 1800 | Marty, Martin E. Pilgrims in Their Own Land: 500 Years of Religion in America. Boston: Little, Brown and Co. (1984); pg. 272. | "In 1800 only 50,000 Catholics lived in the United States; by 1850, theirs was the largest church in America, and in 1900 it claimed 12,000,000 members. " |
| Catholic | USA | 150,000 | - | 80 units |
- | 1800 | Mead, Frank S. (revised by Samuel S. Hill), Handbook of Denominations in the United States (9th Ed.), Abingdon Press: Nashville, Tenn. (1990); pg. 217. | "There was no immediate hierarchal superior in the U.S. when the war ended... At the turn of the century, there were about 150,000 Roman Catholics in 80 churches; by 1890 there were 6,231,417... " |
| Catholic | USA | 200,000 | - | - | - | 1815 | Bokenkotter, Thomas. A Concise History of the Catholic Church. Garden City, NY: Doubleday & Co. (1977); pg. 348. | "[Carroll] saw his little flock, which at his consecration in 1790 numbered some 35,000 (out of 4 million Americans), grow to nearly 200,000 by his death in 1815. " |
| Catholic | USA | - | - | 124 units |
- | 1820 | Gaustad, Edwin S. Church and State in America (series: Religion in American Life). New York: Oxford University Press (1999); pg. 48. | Chart: "Number of Churches [in U.S.A.] in 1820 " |
| Catholic | USA | 1,071,000 | - | - | - | 1826 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 110. | "Estimates of the Catholic population in the U.S. during the nineteenth century were incredibly inflated. The American Almanac for 1826 stated that there were 1,071,000 Roman Catholics in the nation. " |
| Catholic | USA | 500,000 | 4.17% | - | - | 1830 | Bokenkotter, Thomas. A Concise History of the Catholic Church. Garden City, NY: Doubleday & Co. (1977); pg. 350. | "Largely because of Irish immigrants, the number of Catholics jumped from about 500,000 (out of a U.S. population of 12 million) in 1830 to 3,103,000 in 1860 (out of a U.S. population of 31.5 million)--an increase of over 80%... " |
| Catholic | USA | 600,000 | - | - | - | 1830 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 111. | "Many leading Protestant historians have ignored Shaughnessy's statistics. Even though he favorably cited Shaughnessy's statistics for 1880-1910, Sweed ([1930] 1950, pg. 273) repeated errant estimates of 600,000 Catholics in 1830... " |
| Catholic | USA | 1,200,000 | - | - | - | 1835 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 110. | "Estimates of the Catholic population in the U.S. during the nineteenth century were incredibly inflated... Haward (1836) estimated that there were from 800,000 to 1.2 million American Catholics in 1835... " |
| Catholic | USA | - | - | - | - | 1835 | Lang, Susan S. Extremist Groups in America. New York: Franklin Watts (1990); pg. 18. | "Early on, Catholics were victims of loathing and disdain in a mostly Protestant America. When thousands of Catholics immigrated to the United States in the 1830s, they were resented because they competed for the same jobs as those already here. Catholic immigrants were attacked on the street, and their homes were stoned. Later, Catholic churches and homes were stormed and burned by rioting mobs, and dozens of people were killed. In the 1840s, an anti-alien and anti-Catholic secret society was formed. The so-called Know Nothings provoked riots, terror, and national suspicion agains Catholic Irish-Americans for almost twenty years. " |
| Catholic | USA | 1,200,000 | - | - | - | 1836 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 110. | "Estimates of the Catholic population in the U.S. during the nineteenth century were incredibly inflated... 1.2 million is the number given by Bishop John England in 1836 when asked the number of Catholic church members... (Bishop England said he was only guessing)... " |
| Catholic | USA | 650,000 | - | - | - | 1836 | Herberg, Will. Protestant-Catholic-Jew: An Essay in American Religious Sociology; Garden City, NY: Doubleday & Company (1960); pg. 137. | "In 1836 Bihop England calculated that 'had the church been able to hold her own people up to that time, the Catholic population would have been, even then, 4,000,000,' instead of hardly more than 650,000. " |
| Catholic | USA | 1,088,016 | 13.90% | - | - | 1850 | Chalfant, H. Paul, et al. Religion in Contemporary Society (3rd Ed.); Itasca, Illinois: F.E. Peacock Publishers (1994); pg. 145. | "By 1850 there were 1,088,016 Catholics in this country, or 13.9% of the population (Finke and Stark, 1992:55). " |
| Catholic | USA | 1,000,000 | 5.00% | - | - | 1850 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 112. | "According to our calculations [based on census data], in 1850 there were only slightly more than a million American Catholics, or 5 percent of the total population (14 percent of all church adherents). " |
| Catholic | USA | 1,088,000 | - | - | - | 1850 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 113. | Figure 4.1: "Total Adherents by Denominations, 1850-1890 (in thousands; adherents include children and adults) "; Figure has figures for: Catholic, Baptist, Methodist, Presbyterian. |
| Catholic | USA | 1,088,000 | 5.00% | - | - | 1850 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 114. | Table 4.1: "Catholics as Percentage of Total Population and Church Adherents, 1850-1926 "; "Source: The years 1850, 1860, 1870 are based on membership estimates (Finke and Stark, 1986). Other years from Bureau of the Census. " [14% of adherents] |
| Catholic | USA | 3,500,000 | - | - | - | 1850 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 111. | "...Sweed ([1930] 1950, pg. 273) repeated errant estimates of 600,000 Catholics in 1830, 3.5 million in 1850, and 4.5 million in 1860. " |
| Catholic | USA | - | 4.73% | - | - | 1850 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 55. | Figure 3.1: "Religious Adherents by Denomination, 1776 and 1850 (as percentage of total adherents "; "...proportion belonging to churches... 34% " [Adherence rate (34%) multiplied by denomination % (13.9%)] |
| Catholic | USA | - | - | - | - | 1850 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 112. | "When we use estimates based on census data (Finke and Stark, 1986) and standardize for denominations not counting children, the statistics reveal a very different profile. In 1850, the year by which religious historians say Roman Catholicism had become the largest denomination in the country, Catholic totals are only slightly higher than those of Presbyterians and fall far below those of Baptists and the Methodists. It was another generation before Roman Catholics became the largest denomination in America. " |
| Catholic | USA | 1,600,000 | - | - | - | 1850 | Herberg, Will. Protestant-Catholic-Jew: An Essay in American Religious Sociology; Garden City, NY: Doubleday & Company (1960); pg. 141. | "In the decade 1840 to 1850 the church grew from 650,000 to 1,600,000 members " |
| Catholic | USA | 1,700,000 | - | - | - | 1850 | Wuthnow, Robert. The Restructuring of American Religion: Society and Faith Since World War II, Princeton, NJ: Princeton University Press (1988); pg. 23. | "Over the next century great numbers were added through successive waves of immigration. Between 1820 and 1850 the largest share came from Ireland, bringing the total membership of the church to approximately 1.7 million--making it only somewhat larger than the Methodist church. " |
| Catholic | USA | 14,200,000 | - | - | - | 1850 | Wuthnow, Robert. The Restructuring of American Religion: Society and Faith Since World War II, Princeton, NJ: Princeton University Press (1988); pg. 23. | "When the religious census of 1906 was taken, Catholics numbered 14.2 million. " |
| Catholic | USA | - | - | - | - | 1852 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 112. | "Neither Hudson (1981) nor Marty (1984) offers sources for his statistics, but each accepts Ahlstrom's conclusion. Hudson wrote that 'by 1852... the Roman Catholic had become the largest ecclesiastical body in the nation' (p. 128)... " |
| Catholic | USA | 3,300,000 | - | - | - | 1855 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 110. | "Estimates of the Catholic population in the U.S. during the nineteenth century were incredibly inflated... In the 1856 revised version of his book Religion in America, Robert Baird set Catholic membership at 3.3 million for 1855. " |
| Catholic | USA | 3,000,000 | - | - | - | 1860 | Ahlstrom, Sydney E. A Religious History of the American People; Yale University Press: New Haven & London (1973); pg. 827. | "The Catholic population rose from about 3 million in 1860 to about 7 million in 1880 to an estimated 12.5 million in 1895. " |
| Catholic | USA | 3,103,000 | 9.85% | - | - | 1860 | Bokenkotter, Thomas. A Concise History of the Catholic Church. Garden City, NY: Doubleday & Co. (1977); pg. 350. | "Largely because of Irish immigrants, the number of Catholics jumped from about 500,000 (out of a U.S. population of 12 million) in 1830 to 3,103,000 in 1860 (out of a U.S. population of 31.5 million)--an increase of over 80%... " |
| Catholic | USA | 2,439,000 | - | - | - | 1860 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 113. | Figure 4.1: "Total Adherents by Denominations, 1850-1890 (in thousands; adherents include children and adults) "; Figure has figures for: Catholic, Baptist, Methodist, Presbyterian. |
| Catholic | USA | 2,439,000 | 8.00% | - | - | 1860 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 114. | Table 4.1: "Catholics as Percentage of Total Population and Church Adherents, 1850-1926 "; "Source: The years 1850, 1860, 1870 are based on membership estimates (Finke and Stark, 1986). Other years from Bureau of the Census. " [21% of adherents] |
| Catholic | USA | 2,500,000 | 8.00% | - | - | 1860 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 112. | "The massive waves of migration during the 1850s more than doubled the Catholic total by 1860, to nearly 2.5 million adherents. But the substantial non-Catholic component of immigration in this decade limited the increase in the proportion of Americans who were Catholic to only 8 percent. " |
| Catholic | USA | 3,500,000 | - | - | - | 1860 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 111. | "Many leading Protestant historians have ignored Shaughnessy's statistics... Ahlstrom (1975, vol. 1, p. 633) wrote: 'So incredibly large was the flow of immigrants that by 1850 Roman Catholics, once a tiny and ignored minority, had become the country's largest religious communion.' He placed Catholic membership at 3.5 million in 1860, a million fewer than Sweet had claimed, but still far too high. " |
| Catholic | USA | 4,500,000 | - | - | - | 1860 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 110. | "Estimates of the Catholic population in the U.S. during the nineteenth century were incredibly inflated... The report of the 1906 census of religious bodies cites A. J. Schemm as having established that there were a total of 4.5 million American Catholics in 1860. " |
| Catholic | USA | 4,500,000 | - | - | - | 1860 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 111. | "...Sweed ([1930] 1950, pg. 273) repeated errant estimates of 600,000 Catholics in 1830, 3.5 million in 1850, and 4.5 million in 1860. " |
| Catholic | USA | 5,000,000 | - | - | - | 1860 | Marsden, George M. Understanding Fundamentalism and Evangelicalism. William B. Eerdmans Publishing Company: Grand Rapids, Michigan (1991); pg. 14. | "Between 1860 and 1900... Catholic membership quadrupled (from three million to twelve million). " |
| Catholic | USA | 3,555,000 | - | - | - | 1870 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 113. | Figure 4.1: "Total Adherents by Denominations, 1850-1890 (in thousands; adherents include children and adults) "; Figure has figures for: Catholic, Baptist, Methodist, Presbyterian. |
| Catholic | USA | 3,555,000 | 9.00% | - | - | 1870 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 114. | Table 4.1: "Catholics as Percentage of Total Population and Church Adherents, 1850-1926 "; "Source: The years 1850, 1860, 1870 are based on membership estimates (Finke and Stark, 1986). Other years from Bureau of the Census. " [26% of adherents] |
| Catholic | USA | 7,000,000 | - | - | - | 1880 | Ahlstrom, Sydney E. A Religious History of the American People; Yale University Press: New Haven & London (1973); pg. 827. | "The Catholic population rose from about 3 million in 1860 to about 7 million in 1880 to an estimated 12.5 million in 1895. " |
| Catholic | USA | 8,909,000 | 14.15% | - | - | 1890 | Bokenkotter, Thomas. A Concise History of the Catholic Church. Garden City, NY: Doubleday & Co. (1977); pg. 350. | "By 1890 Catholics numbered 8,909,000 out of the nation's 62,947,000. " |
| Catholic | USA | 13,000,000 | - | - | - | 1890 | Chalfant, H. Paul, et al. Religion in Contemporary Society (3rd Ed.); Itasca, Illinois: F.E. Peacock Publishers (1994); pg. 148. | "Catholic numbers [in the U.S.] were estimated by spokesmen of the Catholic hierarchy at anywhere from 9 million to 13 million in 1889-90. " |
| Catholic | USA | 7,000,000 | - | - | - | 1890 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 110. | "To the extent that these numbers were based on anything but pure gueswork..., they were the result of a great fallacy. People simply added all immigrants from all 'Catholic' countries to the previous Catholic total and then factored in a high rate of natural increase. Ford claimed that Irish immigration and fertility alone should have produced 24 million Catholics by 1870, to say nothing of the millions more that should have been produced by immigrants from elsewhere. A more cautious estimate was offered by Abbe Villeneuve, who added together the Irish, German, French, Belgian, and Italian immigrants and claimed there ought to have been at least 20 million American Catholics by 1890 (Shaughnessy, 1925). Because these overcounts were taken for fact, the results of the religion census of 1890 seemed to ratify the proposition... that, when presented with the opportunity to choose, millions of immigrants had deserted the faith. " |
| Catholic | USA | 7,000,000 | 12.00% | - | - | 1890 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 113. | "Indeed, the largest increase in the proportion who were Catholic occurred between 1890, when the census recorded more than 7 million Catholics (making up 12 percent of the population), and 1906... " |
| Catholic | USA | 7,343,000 | - | - | - | 1890 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 113. | Figure 4.1: "Total Adherents by Denominations, 1850-1890 (in thousands; adherents include children and adults) "; Figure has figures for: Catholic, Baptist, Methodist, Presbyterian. |
| Catholic | USA | 7,343,000 | 12.00% | - | - | 1890 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 114. | Table 4.1: "Catholics as Percentage of Total Population and Church Adherents, 1850-1926 "; "Source: The years 1850, 1860, 1870 are based on membership estimates (Finke and Stark, 1986). Other years from Bureau of the Census. " [26% of adherents] |
| Catholic | USA | - | - | - | - | 1890 | Finke, Roger & Rodney Stark. The Churching of America, 1776-1990. New Brunswick, NJ: Rutgers University Press (1992; 3rd printing 1997); pg. 110-111. | "If millions more 'Catholics' had entered the nation, where were they? Defection seemed the only possible conclusion. Bishop England estimated that more than 3 million Catholic immigrants had defected by 1836, and throughout the rest of the century the American Catholic hierarchy grew increasingly upset about the church's terrible losses. In a memorial presented to the Pope in 1910, the loss of members was estimated to be 10 million. Others placed it at 20 million. 'What, then, has become of the other 20 million?' Villeneuve asked. 'They have turned Protestant or have become indifferent,' he answered (in Shaughnessy, 1925, p. 233). But it wasn't true. In 1925 Gerald Shaughnessy published a quantitative study, notable for its sophistication and careful scholarship [showing that the] 'missing' millions had never existed, because the millions of immigrants from 'Catholic' nations weren't Catholics. " |
| Catholic | USA | 6,231,417 | - | - | - | 1890 | Mead, Frank S. (revised by Samuel S. Hill), Handbook of Denominations in the United States (9th Ed.), Abingdon Press: Nashville, Tenn. (1990); pg. 217. | "There was no immediate hierarchal superior in the U.S. when the war ended... At the turn of the century, there were about 150,000 Roman Catholics in 80 churches; by 1890 there were 6,231,417... " |
| Catholic | USA | 8,277,000 | - | - | - | 1891 | Historical Statistics of the United States: Colonial Times to 1970; Washington, D.C.: U.S. Dept. of Commerce, Bureau of Census (1975); pg. 391-392. | Table: "Membership of Selected Religious Bodies: 1790 to 1970 " |
| Catholic | USA | 8,618,000 | - | - | - | 1892 | Historical Statistics of the United States: Colonial Times to 1970; Washington, D.C.: U.S. Dept. of Commerce, Bureau of Census (1975); pg. 391-392. | Table: "Membership of Selected Religious Bodies: 1790 to 1970 " |
| Catholic | USA | 8,806,000 | - | - | - | 1893 | Historical Statistics of the United States: Colonial Times to 1970; Washington, D.C.: U.S. Dept. of Commerce, Bureau of Census (1975); pg. 391-392. | Table: "Membership of Selected Religious Bodies: 1790 to 1970 " |
| Catholic | USA | 8,902,000 | - | - | - | 1894 | Historical Statistics of the United States: Colonial Times to 1970; Washington, D.C.: U.S. Dept. of Commerce, Bureau of Census (1975); pg. 391-392. | Table: "Membership of Selected Religious Bodies: 1790 to 1970 " |
| Catholic | USA | 9,078,000 | - | - | - | 1895 | Historical Statistics of the United States: Colonial Times to 1970; Washington, D.C.: U.S. Dept. of Commerce, Bureau of Census (1975); pg. 391-392. | Table: "Membership of Selected Religious Bodies: 1790 to 1970 " |
| Catholic | USA | 12,500,000 | - | - | - | 1895 | Ahlstrom, Sydney E. A Religious History of the American People; Yale University Press: New Haven & London (1973); pg. 827. | "The Catholic population rose from about 3 million in 1860 to about 7 million in 1880 to an estimated 12.5 million in 1895. " |
| Catholic | USA | 9,411,000 | - | - | - | 1896 | Historical Statistics of the United States: Colonial Times to 1970; Washington, D.C.: U.S. Dept. of Commerce, Bureau of Census (1975); pg. 391-392. | Table: "Membership of Selected Religious Bodies: 1790 to 1970 " |
| Catholic | USA | 9,596,000 | - | - | - | 1897 | Historical Statistics of the United States: Colonial Times to 1970; Washington, D.C.: U.S. Dept. of Commerce, Bureau of Census (1975); pg. 391-392. | Table: "Membership of Selected Religious Bodies: 1790 to 1970 " |
| Catholic | USA | 9,857,000 | - | - | - | 1898 | Historical Statistics of the United States: Colonial Times to 1970; Washington, D.C.: U.S. Dept. of Commerce, Bureau of Census (1975); pg. 391-392. | Table: "Membership of Selected Religious Bodies: 1790 to 1970 " |
| Catholic | USA | 9,907,000 | - | - | - | 1899 | Historical Statistics of the United States: Colonial Times to 1970; Washington, D.C.: U.S. Dept. of Commerce, Bureau of Census (1975); pg. 391-392. | Table: "Membership of Selected Religious Bodies: 1790 to 1970 " |
| Catholic | USA | 10,130,000 | - | - | - | 1900 | Historical Statistics of the United States: Colonial Times to 1970; Washington, D.C.: U.S. Dept. of Commerce, Bureau of Census (1975); pg. 391-392. | Table: "Membership of Selected Religious Bodies: 1790 to 1970 " |
| Catholic | USA | 12,000,000 | - | - | - | 1900 | Marsden, George M. Understanding Fundamentalism and Evangelicalism. William B. Eerdmans Publishing Company: Grand Rapids, Michigan (1991); pg. 14. | "Between 1860 and 1900... Catholic membership quadrupled (from three million to twelve million). " |
