Reformed Church in America Counties (2000) [ Metro Areas | States ]
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The Reformed Church in America, the oldest continuously existing Protestant church in the United States, perpetuates the religious life of the Dutch Reformed settlement of New Amsterdam (New York) in the seventeenth century.

Using data from the 1980-2010 Religious Congregations and Membership Studies, this list ranks U.S. counties on the highest total number of adherents and the highest percent of the population in the Reformed Church in America. 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 County   [Download CSV]AdherentsPercent
130 Ada County, Idaho
216
0.07
132 Adams County, Colorado
186
0.05
135 Alameda County, California
328
0.02
56 Albany County, New York
5,285
1.79
25 Allegan County, Michigan
4,439
4.2
130 Allen County, Indiana
221
0.07
73 Antrim County, Michigan
262
1.13
130 Arapahoe County, Colorado
340
0.07
13 Aurora County, South Dakota
235
7.68
107 Barnes County, North Dakota
42
0.36
63 Barry County, Michigan
849
1.5
76 Bergen County, New Jersey
9,131
1.03
128 Berrien County, Michigan
154
0.09
61 Black Hawk County, Iowa
2,086
1.63
14 Bon Homme County, South Dakota
447
6.16
132 Bronx County, New York
655
0.05
63 Brookings County, South Dakota
424
1.5
134 Broward County, Florida
514
0.03
101 Bucks County, Pennsylvania
2,526
0.42
80 Burleigh County, North Dakota
622
0.9
135 Burlington County, New Jersey
101
0.02
9 Butler County, Iowa
1,714
11.2
84 Caddo County, Oklahoma
233
0.77
127 Calhoun County, Michigan
137
0.1
106 Carroll County, Illinois
62
0.37
124 Cascade County, Montana
104
0.13
127 Cass County, North Dakota
117
0.1
110 Cayuga County, New York
258
0.31
89 Cerro Gordo County, Iowa
313
0.67
28 Charles Mix County, South Dakota
373
3.99
37 Charlevoix County, Michigan
855
3.28
101 Chautauqua County, New York
589
0.42
12 Chippewa County, Minnesota
1,055
8.06
50 Clark County, South Dakota
82
1.98
20 Clay County, Iowa
816
4.7
103 Clinton County, Iowa
201
0.4
138 Clinton County, Michigan
--
--
111 Collin County, Texas
1,466
0.3
26 Columbia County, New York
2,570
4.07
76 Columbia County, Wisconsin
542
1.03
138 Columbus County, North Carolina
--
--
125 Comanche County, Oklahoma
137
0.12
138 Contra Costa County, California
--
--
122 Cook County, Illinois
8,818
0.16
132 Cuyahoga County, Ohio
713
0.05
109 Dakota County, Minnesota
1,131
0.32
90 Dallas County, Iowa
262
0.64
137 Dallas County, Texas
95
0
138 Dane County, Wisconsin
--
--
44 Davison County, South Dakota
468
2.5
93 Delaware County, New York
258
0.54
97 Delaware County, Ohio
535
0.49
130 Denton County, Texas
323
0.07
119 Denver County, Colorado
1,067
0.19
138 Deuel County, South Dakota
--
--
30 Dickinson County, Iowa
618
3.76
33 Dodge County, Wisconsin
2,925
3.41
111 Douglas County, Minnesota
98
0.3
127 Douglas County, Nebraska
485
0.1
2 Douglas County, South Dakota
630
18.22
129 DuPage County, Illinois
699
0.08
54 Dutchess County, New York
5,106
1.82
121 El Paso County, Colorado
857
0.17
21 Emmons County, North Dakota
201
4.64
138 Erie County, New York
--
--
138 Escambia County, Alabama
--
--
122 Essex County, New Jersey
1,269
0.16
138 Essex County, New York
--
--
62 Fillmore County, Minnesota
331
1.57
68 Fond du Lac County, Wisconsin
1,305
1.34
19 Franklin County, Iowa
542
5.06
138 Franklin County, New York
--
--
134 Franklin County, Ohio
268
0.03
123 Frederick County, Maryland
292
0.15
84 Freeborn County, Minnesota
251
0.77
138 Fresno County, California
--
--
134 Fulton County, Georgia
245
0.03
92 Fulton County, Illinois
220
0.58
87 Fulton County, New York
394
0.72
78 Gage County, Nebraska
231
1
128 Genesee County, Michigan
392
0.09
45 Gooding County, Idaho
350
2.47
51 Grand Traverse County, Michigan
1,518
1.95
69 Grant County, Minnesota
81
1.29
138 Grant County, South Dakota
--
--
42 Greene County, New York
1,296
2.69
15 Grundy County, Iowa
728
5.89
138 Gwinnett County, Georgia
--
--
128 Hamilton County, Indiana
167
0.09
29 Hamlin County, South Dakota
210
3.79
70 Hardin County, Iowa
239
1.27
94 Henderson County, Illinois
43
0.52
134 Hennepin County, Minnesota
384
0.03
74 Herkimer County, New York
698
1.08
134 Hillsborough County, Florida
285
0.03
122 Hudson County, New Jersey
965
0.16
57 Hunterdon County, New Jersey
2,165
1.77
113 Ingham County, Michigan
742
0.27
101 Iroquois County, Illinois
132
0.42
85 Island County, Washington
541
0.76
47 Jackson County, Kentucky
297
2.2
138 Jackson County, Missouri
--
--
17 Jasper County, Indiana
1,574
5.24
32 Jasper County, Iowa
1,276
3.43
126 Jefferson County, Colorado
576
0.11
115 Jefferson County, New York
275
0.25
115 Johnson County, Iowa
281
0.25
132 Johnson County, Kansas
236
0.05
138 Jones County, South Dakota
--
--
27 Kalamazoo County, Michigan
9,538
4
67 Kandiyohi County, Minnesota
556
1.35
79 Kankakee County, Illinois
953
0.92
41 Kent County, Michigan
17,633
3.07
135 King County, Washington
354
0.02
130 Kings County, New York
1,732
0.07
66 Kossuth County, Iowa
244
1.42
98 Lac qui Parle County, Minnesota
37
0.46
138 Lake County, Illinois
--
--
123 Lake County, Indiana
724
0.15
138 Lake County, Minnesota
--
--
55 LaMoure County, North Dakota
85
1.81
101 Lancaster County, Nebraska
1,041
0.42
138 Lee County, Florida
--
--
55 Leelanau County, Michigan
382
1.81
114 Lewis County, New York
70
0.26
35 Lincoln County, South Dakota
798
3.31
115 Linn County, Iowa
480
0.25
77 Los Alamos County, New Mexico
188
1.02
130 Los Angeles County, California
6,591
0.07
3 Lyon County, Iowa
2,028
17.24
135 Macomb County, Michigan
171
0.02
117 Madera County, California
259
0.21
28 Mahaska County, Iowa
891
3.99
124 Manatee County, Florida
356
0.13
108 Marathon County, Wisconsin
426
0.34
131 Maricopa County, Arizona
1,698
0.06
135 Marion County, Indiana
202
0.02
6 Marion County, Iowa
4,292
13.39
60 Marshall County, South Dakota
75
1.64
65 Mason County, Michigan
411
1.45
95 Medina County, Ohio
764
0.51
132 Mercer County, New Jersey
190
0.05
136 Miami-Dade County, Florida
191
0.01
136 Middlesex County, Massachusetts
104
0.01
104 Middlesex County, New Jersey
2,929
0.39
102 Midland County, Michigan
336
0.41
130 Milwaukee County, Wisconsin
691
0.07
53 Minnehaha County, South Dakota
2,713
1.83
24 Missaukee County, Michigan
638
4.41
138 Mobile County, Alabama
--
--
99 Monmouth County, New Jersey
2,750
0.45
126 Monroe County, New York
793
0.11
138 Monroe County, Pennsylvania
--
--
18 Montgomery County, New York
2,534
5.1
132 Montgomery County, Pennsylvania
348
0.05
97 Morris County, New Jersey
2,285
0.49
138 Multnomah County, Oregon
--
--
23 Murray County, Minnesota
415
4.53
39 Muskegon County, Michigan
5,435
3.19
120 Nassau County, New York
2,458
0.18
82 New York County, New York
12,439
0.81
40 Newaygo County, Michigan
1,522
3.18
22 Nobles County, Minnesota
959
4.6
138 Northampton County, Pennsylvania
--
--
136 Oakland County, Michigan
63
0.01
5 O'Brien County, Iowa
2,269
15.02
114 Ocean County, New Jersey
1,350
0.26
71 Oceana County, Michigan
320
1.19
49 Ogle County, Illinois
1,024
2.01
125 Oklahoma County, Oklahoma
782
0.12
122 Olmsted County, Minnesota
204
0.16
130 Oneida County, New York
169
0.07
126 Onondaga County, New York
526
0.11
94 Orange County, California
14,911
0.52
133 Orange County, Florida
337
0.04
91 Orange County, New York
2,058
0.6
8 Osceola County, Iowa
820
11.71
107 Otero County, New Mexico
222
0.36
4 Ottawa County, Michigan
36,461
15.3
136 Palm Beach County, Florida
158
0.01
129 Pasco County, Florida
263
0.08
86 Passaic County, New Jersey
3,622
0.74
138 Peoria County, Illinois
--
--
138 Philadelphia County, Pennsylvania
--
--
43 Phillips County, Kansas
156
2.6
100 Pike County, Pennsylvania
204
0.44
134 Pima County, Arizona
253
0.03
135 Pinellas County, Florida
225
0.02
11 Pipestone County, Minnesota
813
8.22
138 Placer County, California
--
--
138 Plymouth County, Iowa
--
--
84 Polk County, Iowa
2,880
0.77
120 Queens County, New York
4,114
0.18
129 Racine County, Wisconsin
147
0.08
138 Ramsey County, Minnesota
--
--
64 Rensselaer County, New York
2,261
1.48
121 Richmond County, New York
737
0.17
103 Rio Arriba County, New Mexico
164
0.4
101 Riverside County, California
6,442
0.42
7 Rock County, Minnesota
1,207
12.42
124 Rock County, Wisconsin
197
0.13
112 Rockland County, New York
825
0.29
123 Sacramento County, California
1,804
0.15
130 San Bernardino County, California
1,168
0.07
135 San Diego County, California
506
0.02
136 San Francisco County, California
62
0.01
115 San Joaquin County, California
1,389
0.25
134 San Mateo County, California
224
0.03
138 Santa Barbara County, California
--
--
129 Santa Clara County, California
1,350
0.08
123 Sarasota County, Florida
482
0.15
96 Saratoga County, New York
1,007
0.5
36 Schenectady County, New York
4,831
3.3
46 Schoharie County, New York
708
2.24
109 Scott County, Iowa
504
0.32
118 Scott County, Minnesota
181
0.2
133 Sedgwick County, Kansas
191
0.04
72 Seneca County, New York
394
1.18
21 Sheboygan County, Wisconsin
5,227
4.64
1 Sioux County, Iowa
11,282
35.71
130 Snohomish County, Washington
417
0.07
52 Somerset County, New Jersey
5,471
1.84
135 Sonoma County, California
71
0.02
126 St. Charles County, Missouri
320
0.11
83 St. Croix County, Wisconsin
495
0.78
127 Stanislaus County, California
439
0.1
81 Stephenson County, Illinois
434
0.89
127 Suffolk County, New York
1,393
0.1
88 Sullivan County, New York
523
0.71
121 Sussex County, New Jersey
246
0.17
136 Tarrant County, Texas
156
0.01
108 Tazewell County, Illinois
434
0.34
38 Thurston County, Nebraska
230
3.21
106 Tippecanoe County, Indiana
549
0.37
116 Tulare County, California
814
0.22
10 Turner County, South Dakota
831
9.39
48 Twin Falls County, Idaho
1,329
2.07
31 Ulster County, New York
6,131
3.45
133 Union County, New Jersey
217
0.04
66 Van Buren County, Michigan
1,080
1.42
138 Van Wert County, Ohio
--
--
133 Wake County, North Carolina
249
0.04
120 Walworth County, Wisconsin
173
0.18
119 Wapello County, Iowa
69
0.19
138 Warren County, Iowa
--
--
114 Washington County, New York
156
0.26
129 Washington County, Wisconsin
96
0.08
133 Washtenaw County, Michigan
122
0.04
133 Waukesha County, Wisconsin
140
0.04
133 Wayne County, Michigan
805
0.04
59 Wayne County, New York
1,553
1.66
114 Wayne County, Pennsylvania
126
0.26
105 Westchester County, New York
3,465
0.38
72 Whatcom County, Washington
1,974
1.18
16 Whiteside County, Illinois
3,406
5.62
110 Will County, Illinois
1,563
0.31
131 Williamson County, Tennessee
79
0.06
132 Winnebago County, Illinois
148
0.05
34 Winnebago County, Iowa
391
3.34
111 Wood County, Wisconsin
230
0.3
71 Woodbury County, Iowa
1,238
1.19
58 Wright County, Iowa
245
1.71
123 Wright County, Minnesota
133
0.15
125 Yakima County, Washington
273
0.12
75 Yankton County, South Dakota
230
1.06
123 Yavapai County, Arizona
255
0.15


* 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]