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QuickLists > U.S. Religious Groups > Reformed Church in America | |
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] | Adherents | Percent |
|---|
| 1 |
Sioux County, Iowa |
11,112 |
32.97 |
| 2 |
Marion County, Iowa |
6,783 |
20.36 |
| 3 |
Lyon County, Iowa |
2,352 |
20.31 |
| 4 |
O'Brien County, Iowa |
2,372 |
16.47 |
| 5 |
Rock County, Minnesota |
1,329 |
13.72 |
| 6 |
Ottawa County, Michigan |
33,297 |
12.62 |
| 7 |
Douglas County, South Dakota |
374 |
12.46 |
| 8 |
Osceola County, Iowa |
741 |
11.47 |
| 9 |
Turner County, South Dakota |
868 |
10.4 |
| 10 |
Pipestone County, Minnesota |
896 |
9.34 |
| 11 |
Aurora County, South Dakota |
248 |
9.15 |
| 12 |
Chippewa County, Minnesota |
969 |
7.79 |
| 13 |
Butler County, Iowa |
1,113 |
7.49 |
| 14 |
Missaukee County, Michigan |
845 |
5.69 |
| 15 |
Bon Homme County, South Dakota |
361 |
5.11 |
| 16 |
Franklin County, Iowa |
543 |
5.08 |
| 17 |
Whiteside County, Illinois |
2,907 |
4.97 |
| 18 |
Dickinson County, Iowa |
771 |
4.63 |
| 19 |
Charles Mix County, South Dakota |
420 |
4.6 |
| 20 |
Sheboygan County, Wisconsin |
5,276 |
4.57 |
| 21 |
Jasper County, Indiana |
1,502 |
4.49 |
| 22 |
Hamlin County, South Dakota |
263 |
4.46 |
| 23 |
Clay County, Iowa |
735 |
4.41 |
| 24 |
Murray County, Minnesota |
382 |
4.38 |
| 25 |
Emmons County, North Dakota |
145 |
4.08 |
| 26 |
Lincoln County, South Dakota |
1,818 |
4.06 |
| 27 |
Allegan County, Michigan |
4,465 |
4.01 |
| 28 |
Grundy County, Iowa |
473 |
3.8 |
| 29 |
Mahaska County, Iowa |
804 |
3.59 |
| 30 |
Kalamazoo County, Michigan |
8,414 |
3.36 |
| 31 |
Winnebago County, Iowa |
337 |
3.1 |
| 32 |
Muskegon County, Michigan |
4,997 |
2.9 |
| 33 |
Montgomery County, New York |
1,420 |
2.83 |
| 34 |
Dodge County, Wisconsin |
2,487 |
2.8 |
| 35 |
Thurston County, Nebraska |
193 |
2.78 |
| 36 |
Ulster County, New York |
4,987 |
2.73 |
| 37 |
Nobles County, Minnesota |
563 |
2.63 |
| 38 |
Charlevoix County, Michigan |
655 |
2.52 |
| 39 |
Black Hawk County, Iowa |
3,266 |
2.49 |
| 39 |
Kent County, Michigan |
14,993 |
2.49 |
| 40 |
Jasper County, Iowa |
863 |
2.34 |
| 41 |
Schenectady County, New York |
3,597 |
2.32 |
| 42 |
Mason County, Michigan |
650 |
2.26 |
| 43 |
Davison County, South Dakota |
436 |
2.24 |
| 44 |
Columbia County, New York |
1,379 |
2.19 |
| 45 |
Twin Falls County, Idaho |
1,633 |
2.11 |
| 46 |
Greene County, New York |
1,018 |
2.07 |
| 47 |
Oceana County, Michigan |
546 |
2.05 |
| 48 |
Grand Traverse County, Michigan |
1,700 |
1.95 |
| 49 |
Newaygo County, Michigan |
936 |
1.93 |
| 49 |
Phillips County, Kansas |
109 |
1.93 |
| 50 |
Fillmore County, Minnesota |
398 |
1.91 |
| 51 |
Schoharie County, New York |
534 |
1.63 |
| 52 |
Jackson County, Kentucky |
215 |
1.59 |
| 52 |
Minnehaha County, South Dakota |
2,693 |
1.59 |
| 53 |
LaMoure County, North Dakota |
65 |
1.57 |
| 54 |
Somerset County, New Jersey |
4,843 |
1.5 |
| 55 |
Marshall County, South Dakota |
67 |
1.44 |
| 55 |
Wright County, Iowa |
191 |
1.44 |
| 56 |
Hunterdon County, New Jersey |
1,827 |
1.42 |
| 56 |
Lake County, Indiana |
7,062 |
1.42 |
| 57 |
Gooding County, Idaho |
217 |
1.4 |
| 58 |
Woodbury County, Iowa |
1,388 |
1.36 |
| 59 |
Fond du Lac County, Wisconsin |
1,335 |
1.31 |
| 60 |
Brookings County, South Dakota |
412 |
1.29 |
| 61 |
Kandiyohi County, Minnesota |
537 |
1.27 |
| 62 |
Ogle County, Illinois |
672 |
1.26 |
| 63 |
Van Buren County, Michigan |
954 |
1.25 |
| 64 |
Kossuth County, Iowa |
192 |
1.24 |
| 65 |
Albany County, New York |
3,729 |
1.23 |
| 66 |
Dutchess County, New York |
3,588 |
1.21 |
| 67 |
Yankton County, South Dakota |
254 |
1.13 |
| 68 |
Kankakee County, Illinois |
1,204 |
1.06 |
| 69 |
Barry County, Michigan |
601 |
1.02 |
| 69 |
Wayne County, New York |
955 |
1.02 |
| 70 |
Leelanau County, Michigan |
220 |
1.01 |
| 71 |
Herkimer County, New York |
626 |
0.97 |
| 72 |
Hardin County, Iowa |
166 |
0.95 |
| 73 |
Antrim County, Michigan |
222 |
0.94 |
| 73 |
Rensselaer County, New York |
1,495 |
0.94 |
| 74 |
Columbia County, Wisconsin |
503 |
0.89 |
| 75 |
Grant County, Minnesota |
53 |
0.88 |
| 76 |
Polk County, Iowa |
3,651 |
0.85 |
| 77 |
Gage County, Nebraska |
182 |
0.82 |
| 78 |
Bergen County, New Jersey |
6,989 |
0.77 |
| 78 |
Burleigh County, North Dakota |
628 |
0.77 |
| 79 |
Whatcom County, Washington |
1,467 |
0.73 |
| 80 |
Delaware County, Ohio |
1,210 |
0.69 |
| 81 |
Stephenson County, Illinois |
325 |
0.68 |
| 82 |
New York County, New York |
10,268 |
0.65 |
| 83 |
Freeborn County, Minnesota |
200 |
0.64 |
| 83 |
Van Wert County, Ohio |
185 |
0.64 |
| 84 |
Warren County, Iowa |
285 |
0.62 |
| 85 |
Caddo County, Oklahoma |
182 |
0.61 |
| 85 |
Island County, Washington |
477 |
0.61 |
| 85 |
Plymouth County, Iowa |
153 |
0.61 |
| 86 |
Seneca County, New York |
207 |
0.59 |
| 87 |
Sullivan County, New York |
445 |
0.57 |
| 88 |
Cerro Gordo County, Iowa |
234 |
0.53 |
| 89 |
Passaic County, New Jersey |
2,531 |
0.5 |
| 90 |
Delaware County, New York |
233 |
0.49 |
| 91 |
Fulton County, Illinois |
178 |
0.48 |
| 92 |
Medina County, Ohio |
797 |
0.46 |
| 93 |
Iroquois County, Illinois |
134 |
0.45 |
| 94 |
Dallas County, Iowa |
291 |
0.44 |
| 95 |
Saratoga County, New York |
934 |
0.43 |
| 96 |
Henderson County, Illinois |
31 |
0.42 |
| 96 |
Midland County, Michigan |
349 |
0.42 |
| 97 |
St. Croix County, Wisconsin |
348 |
0.41 |
| 98 |
Chautauqua County, New York |
534 |
0.4 |
| 99 |
Linn County, Iowa |
820 |
0.39 |
| 99 |
Otero County, New Mexico |
248 |
0.39 |
| 100 |
Lancaster County, Nebraska |
1,077 |
0.38 |
| 101 |
Clinton County, Iowa |
177 |
0.36 |
| 101 |
Rio Arriba County, New Mexico |
145 |
0.36 |
| 101 |
Scott County, Iowa |
598 |
0.36 |
| 102 |
Lewis County, New York |
91 |
0.34 |
| 102 |
Madera County, California |
517 |
0.34 |
| 102 |
Westchester County, New York |
3,244 |
0.34 |
| 103 |
Barnes County, North Dakota |
36 |
0.33 |
| 103 |
Monmouth County, New Jersey |
2,082 |
0.33 |
| 103 |
Orange County, New York |
1,215 |
0.33 |
| 104 |
Los Alamos County, New Mexico |
55 |
0.31 |
| 104 |
Marathon County, Wisconsin |
422 |
0.31 |
| 104 |
Orange County, California |
9,273 |
0.31 |
| 105 |
Grant County, South Dakota |
22 |
0.3 |
| 105 |
Jefferson County, New York |
350 |
0.3 |
| 106 |
Ingham County, Michigan |
782 |
0.28 |
| 106 |
Morris County, New Jersey |
1,381 |
0.28 |
| 106 |
Riverside County, California |
6,199 |
0.28 |
| 107 |
Fulton County, New York |
152 |
0.27 |
| 107 |
Tulare County, California |
1,183 |
0.27 |
| 108 |
Bucks County, Pennsylvania |
1,535 |
0.25 |
| 108 |
Tippecanoe County, Indiana |
426 |
0.25 |
| 108 |
Washington County, New York |
155 |
0.25 |
| 108 |
Wood County, Wisconsin |
185 |
0.25 |
| 109 |
Carroll County, Illinois |
37 |
0.24 |
| 109 |
San Francisco County, California |
1,924 |
0.24 |
| 110 |
Dakota County, Minnesota |
897 |
0.23 |
| 110 |
Middlesex County, New Jersey |
1,874 |
0.23 |
| 110 |
Rockland County, New York |
702 |
0.23 |
| 111 |
Tazewell County, Illinois |
280 |
0.21 |
| 112 |
Cayuga County, New York |
154 |
0.19 |
| 113 |
Johnson County, Iowa |
241 |
0.18 |
| 113 |
San Joaquin County, California |
1,218 |
0.18 |
| 114 |
Wapello County, Iowa |
62 |
0.17 |
| 115 |
Ocean County, New Jersey |
929 |
0.16 |
| 116 |
El Paso County, Colorado |
937 |
0.15 |
| 116 |
Queens County, New York |
3,445 |
0.15 |
| 117 |
Hudson County, New Jersey |
878 |
0.14 |
| 117 |
Nassau County, New York |
1,858 |
0.14 |
| 117 |
Pike County, Pennsylvania |
83 |
0.14 |
| 117 |
Sacramento County, California |
2,057 |
0.14 |
| 117 |
Will County, Illinois |
970 |
0.14 |
| 118 |
Douglas County, Nebraska |
675 |
0.13 |
| 118 |
Frederick County, Maryland |
299 |
0.13 |
| 118 |
Monroe County, Pennsylvania |
215 |
0.13 |
| 118 |
Richmond County, New York |
624 |
0.13 |
| 119 |
Comanche County, Oklahoma |
141 |
0.11 |
| 119 |
Cook County, Illinois |
5,555 |
0.11 |
| 119 |
Jefferson County, Colorado |
573 |
0.11 |
| 119 |
Olmsted County, Minnesota |
160 |
0.11 |
| 120 |
Rock County, Wisconsin |
163 |
0.1 |
| 120 |
Yakima County, Washington |
236 |
0.1 |
| 120 |
Yavapai County, Arizona |
218 |
0.1 |
| 121 |
St. Charles County, Missouri |
336 |
0.09 |
| 121 |
Walworth County, Wisconsin |
91 |
0.09 |
| 122 |
Denver County, Colorado |
505 |
0.08 |
| 122 |
Monroe County, New York |
596 |
0.08 |
| 122 |
Onondaga County, New York |
384 |
0.08 |
| 122 |
Wright County, Minnesota |
97 |
0.08 |
| 123 |
Calhoun County, Michigan |
102 |
0.07 |
| 123 |
Collin County, Texas |
512 |
0.07 |
| 123 |
Essex County, New Jersey |
559 |
0.07 |
| 123 |
Oklahoma County, Oklahoma |
491 |
0.07 |
| 123 |
Sussex County, New Jersey |
100 |
0.07 |
| 123 |
Washtenaw County, Michigan |
241 |
0.07 |
| 124 |
Ada County, Idaho |
219 |
0.06 |
| 124 |
Allen County, Indiana |
202 |
0.06 |
| 124 |
Cascade County, Montana |
52 |
0.06 |
| 124 |
Genesee County, Michigan |
254 |
0.06 |
| 124 |
Hamilton County, Indiana |
176 |
0.06 |
| 124 |
Los Angeles County, California |
6,293 |
0.06 |
| 124 |
Milwaukee County, Wisconsin |
531 |
0.06 |
| 124 |
Racine County, Wisconsin |
122 |
0.06 |
| 124 |
Santa Clara County, California |
993 |
0.06 |
| 124 |
Sarasota County, Florida |
234 |
0.06 |
| 124 |
Sedgwick County, Kansas |
283 |
0.06 |
| 124 |
Washington County, Wisconsin |
81 |
0.06 |
| 125 |
Cass County, North Dakota |
79 |
0.05 |
| 125 |
DuPage County, Illinois |
460 |
0.05 |
| 125 |
Kings County, New York |
1,314 |
0.05 |
| 125 |
Mercer County, New Jersey |
181 |
0.05 |
| 125 |
San Bernardino County, California |
931 |
0.05 |
| 125 |
Stanislaus County, California |
232 |
0.05 |
| 125 |
Suffolk County, New York |
754 |
0.05 |
| 126 |
Arapahoe County, Colorado |
252 |
0.04 |
| 126 |
Cuyahoga County, Ohio |
527 |
0.04 |
| 126 |
Manatee County, Florida |
119 |
0.04 |
| 126 |
Snohomish County, Washington |
290 |
0.04 |
| 126 |
Union County, New Jersey |
192 |
0.04 |
| 127 |
Berrien County, Michigan |
42 |
0.03 |
| 127 |
Bronx County, New York |
392 |
0.03 |
| 127 |
Hennepin County, Minnesota |
296 |
0.03 |
| 127 |
Johnson County, Kansas |
177 |
0.03 |
| 127 |
Maricopa County, Arizona |
1,101 |
0.03 |
| 127 |
Montgomery County, Pennsylvania |
243 |
0.03 |
| 127 |
Pima County, Arizona |
299 |
0.03 |
| 127 |
Wayne County, Michigan |
604 |
0.03 |
| 128 |
Alameda County, California |
310 |
0.02 |
| 128 |
Broward County, Florida |
359 |
0.02 |
| 128 |
Contra Costa County, California |
178 |
0.02 |
| 128 |
Fresno County, California |
175 |
0.02 |
| 128 |
Fulton County, Georgia |
217 |
0.02 |
| 128 |
Hillsborough County, Florida |
262 |
0.02 |
| 128 |
Orange County, Florida |
242 |
0.02 |
| 128 |
Sonoma County, California |
97 |
0.02 |
| 128 |
Wake County, North Carolina |
197 |
0.02 |
| 129 |
Franklin County, Ohio |
99 |
0.01 |
| 129 |
Gwinnett County, Georgia |
65 |
0.01 |
| 129 |
King County, Washington |
265 |
0.01 |
| 129 |
Macomb County, Michigan |
75 |
0.01 |
| 129 |
Marion County, Indiana |
119 |
0.01 |
| 129 |
Miami-Dade County, Florida |
151 |
0.01 |
| 129 |
Middlesex County, Massachusetts |
106 |
0.01 |
| 129 |
San Diego County, California |
360 |
0.01 |
| 129 |
Waukesha County, Wisconsin |
57 |
0.01 |
| 130 |
Palm Beach County, Florida |
63 |
0 |
| 131 |
Adams County, Colorado |
-- |
-- |
| 131 |
Burlington County, New Jersey |
-- |
-- |
| 131 |
Clark County, South Dakota |
-- |
-- |
| 131 |
Clinton County, Michigan |
-- |
-- |
| 131 |
Columbus County, North Carolina |
-- |
-- |
| 131 |
Dallas County, Texas |
-- |
-- |
| 131 |
Dane County, Wisconsin |
-- |
-- |
| 131 |
Denton County, Texas |
-- |
-- |
| 131 |
Deuel County, South Dakota |
-- |
-- |
| 131 |
Douglas County, Minnesota |
-- |
-- |
| 131 |
Erie County, New York |
-- |
-- |
| 131 |
Escambia County, Alabama |
-- |
-- |
| 131 |
Essex County, New York |
-- |
-- |
| 131 |
Franklin County, New York |
-- |
-- |
| 131 |
Jackson County, Missouri |
-- |
-- |
| 131 |
Jones County, South Dakota |
-- |
-- |
| 131 |
Lac qui Parle County, Minnesota |
-- |
-- |
| 131 |
Lake County, Illinois |
-- |
-- |
| 131 |
Lake County, Minnesota |
-- |
-- |
| 131 |
Lee County, Florida |
-- |
-- |
| 131 |
Mobile County, Alabama |
-- |
-- |
| 131 |
Multnomah County, Oregon |
-- |
-- |
| 131 |
Northampton County, Pennsylvania |
-- |
-- |
| 131 |
Oakland County, Michigan |
-- |
-- |
| 131 |
Oneida County, New York |
-- |
-- |
| 131 |
Pasco County, Florida |
-- |
-- |
| 131 |
Peoria County, Illinois |
-- |
-- |
| 131 |
Philadelphia County, Pennsylvania |
-- |
-- |
| 131 |
Pinellas County, Florida |
-- |
-- |
| 131 |
Placer County, California |
-- |
-- |
| 131 |
Ramsey County, Minnesota |
-- |
-- |
| 131 |
San Mateo County, California |
-- |
-- |
| 131 |
Santa Barbara County, California |
-- |
-- |
| 131 |
Scott County, Minnesota |
-- |
-- |
| 131 |
Tarrant County, Texas |
-- |
-- |
| 131 |
Wayne County, Pennsylvania |
-- |
-- |
| 131 |
Williamson County, Tennessee |
-- |
-- |
| 131 |
Winnebago County, Illinois |
-- |
-- |
*
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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