Catholicism States (1980) [ Counties | [ Metro Areas ]
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Western Liturgical family represents the Roman Catholic Church or churches that originate from it. Such offshoots include the Old Catholic Church and the Polish National Catholic Church, which differ from the Roman Catholic Church in their rejection of the authority of the pope.

Using data from the 1980-2010 Religious Congregations and Membership Studies, this list ranks U.S. states on the highest total number of adherents and the highest percent of the population who are Catholic. You can sort the list by clicking on the column headings.

Congregational "Adherents" include all full members, their children, and others who regularly attend services. "Percent" is the percentage of the total population that belongs to that denomination. Note: Adherents are sometimes residents of a county different than the location of their congregation.

[ More information on the data source ]

Complete List

RankingState   [Download CSV]AdherentsPercent
1 Rhode Island
602,993
63.66
2 Massachusetts
3,040,448
53
3 Connecticut
1,390,607
44.75
4 New Jersey
2,958,499
40.17
5 New York
6,257,786
35.64
6 New Mexico
435,241
33.41
7 Wisconsin
1,544,817
32.83
8 Pennsylvania
3,881,444
32.72
9 Illinois
3,600,968
31.51
10 Louisiana
1,304,084
31.01
10 New Hampshire
285,436
31.01
11 Vermont
156,596
30.62
12 North Dakota
174,046
26.66
13 Minnesota
1,041,781
25.56
14 Maine
275,913
24.53
15 Ohio
2,433,767
22.54
16 Michigan
2,043,483
22.06
17 Hawaii
210,000
21.77
18 Nebraska
332,849
21.2
19 California
4,759,292
20.11
20 South Dakota
138,387
20.03
21 Iowa
539,482
18.57
22 Arizona
485,098
17.85
22 Montana
140,415
17.85
23 Maryland
736,361
17.46
24 Delaware
103,060
17.34
25 Florida
1,353,478
16.67
26 Texas
2,340,162
16.45
27 Missouri
800,228
16.28
28 District Of Columbia
95,794
15.01
29 Kansas
337,077
14.26
30 Colorado
403,399
13.96
31 Nevada
110,105
13.75
32 Wyoming
62,315
13.27
33 Indiana
724,188
13.19
34 Oregon
320,716
12.18
35 Kentucky
365,277
9.98
36 Alaska
39,678
9.87
37 Washington
380,023
9.2
38 Idaho
70,476
7.47
39 West Virginia
105,346
5.4
40 Virginia
284,389
5.32
41 Utah
59,844
4.1
42 Mississippi
95,096
3.77
43 Oklahoma
109,211
3.61
44 Alabama
106,123
2.73
45 Georgia
141,145
2.58
46 Tennessee
114,916
2.5
47 Arkansas
56,911
2.39
48 South Carolina
59,027
1.89
49 North Carolina
94,768
1.61


* In an effort to better match the ASARB standards for adherents, a few religious bodies changed the way their adherents were reported in 2010, including Amish groups, Friends groups, Jewish groups, the Church of Jesus Christ of Latter-day Saints, Non-denominational Christian Churches, and the United Methodist Church. This change does not affect any of the data in the newly released 2010 U.S. Religion Census: Religious Congregations & Membership Study. In fact, the data for these groups are now more comparable to that of other bodies than it was in previous decadal reports.

However, the change in methodology can distort assessments on growth or decline between 2000 and 2010 for each of these groups. County-level 2000 data using the new methodology are not readily available. ASARB staff has adjusted some 2000 county-level adherent statistics to allow for a more accurate picture on growth or decline. The revised maps and charts are now available on-line at www.usreligioncensus.org for those who are interested in these trends.

Source

2010 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and include statistics for 236 religious groups, providing information on the number of their congregations and adherents within each state and county in the United States. Clifford Grammich, Kirk Hadaway, Richard Houseal, Dale E. Jones, Alexei Krindatch, Richie Stanley and Richard H. Taylor supervised the collection. These data originally appeared in 2010 U.S. Religion Census: Religious Congregations & Membership Study, published by the Association of Statisticians of American Religious Bodies (ASARB). [More information on the data collection]




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