Catholicism States (2010) [ Counties | Metro Areas ]
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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

Ranking State   [Download CSV]AdherentsPercent
1 Massachusetts
2,940,199
44.9
2 Rhode Island
466,598
44.33
3 New Jersey
3,235,290
36.8
4 Connecticut
1,254,340
35.1
5 New York
6,287,618
32.45
6 Illinois
3,648,907
28.44
7 New Mexico
584,941
28.41
8 Pennsylvania
3,503,028
27.58
9 California
10,234,036
27.47
10 Louisiana
1,200,900
26.49
11 Wisconsin
1,425,523
25.07
12 North Dakota
167,349
24.88
13 New Hampshire
311,028
23.63
14 Minnesota
1,150,367
21.69
15 Vermont
128,293
20.5
16 Nebraska
372,838
20.41
17 Delaware
182,532
20.33
18 Texas
4,673,500
18.59
19 Hawaii
249,619
18.35
20 South Dakota
148,883
18.29
21 Michigan
1,717,296
17.38
22 Ohio
1,992,567
17.27
23 Nevada
451,070
16.7
24 Iowa
503,080
16.51
25 Colorado
811,630
16.14
26 Kansas
426,611
14.95
27 Arizona
930,702
14.56
28 Maryland
837,338
14.5
29 Maine
190,106
14.31
30 Florida
2,515,243
13.38
31 Montana
127,612
12.9
32 District Of Columbia
75,948
12.62
33 Missouri
724,315
12.09
34 Washington
784,332
11.66
35 Indiana
747,706
11.53
36 Wyoming
61,222
10.86
37 Oregon
399,440
10.43
38 Virginia
674,555
8.43
39 Kentucky
359,783
8.29
40 Idaho
123,400
7.87
41 Alaska
50,866
7.16
42 Georgia
596,384
6.16
43 Utah
160,125
5.79
44 West Virginia
95,849
5.17
45 Oklahoma
178,430
4.76
46 Arkansas
122,662
4.21
47 Alabama
200,657
4.2
48 North Carolina
392,912
4.12
49 South Carolina
181,743
3.93
50 Mississippi
112,488
3.79
51 Tennessee
223,045
3.51


* 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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