Business planning by county

Iowa county reference

99 counties and county equivalents in Iowa. Search names or FIPS codes, compare Census geography and keep the original sources with your work.

• Adair County

  Iowa · FIPS 19001

  7,403 residents · 2025 estimate

• Adams County

  Iowa · FIPS 19003

  3,617 residents · 2025 estimate

• Allamakee County

  Iowa · FIPS 19005

  14,238 residents · 2025 estimate

• Appanoose County

  Iowa · FIPS 19007

  12,077 residents · 2025 estimate

• Audubon County

  Iowa · FIPS 19009

  5,509 residents · 2025 estimate

• Benton County

  Iowa · FIPS 19011

  26,004 residents · 2025 estimate

• Black Hawk County

  Iowa · FIPS 19013

  131,532 residents · 2025 estimate

• Boone County

  Iowa · FIPS 19015

  26,799 residents · 2025 estimate

• Bremer County

  Iowa · FIPS 19017

  25,296 residents · 2025 estimate

• Buchanan County

  Iowa · FIPS 19019

  20,883 residents · 2025 estimate

• Buena Vista County

  Iowa · FIPS 19021

  20,449 residents · 2025 estimate

• Butler County

  Iowa · FIPS 19023

  14,049 residents · 2025 estimate

• Calhoun County

  Iowa · FIPS 19025

  9,562 residents · 2025 estimate

• Carroll County

  Iowa · FIPS 19027

  20,303 residents · 2025 estimate

• Cass County

  Iowa · FIPS 19029

  12,960 residents · 2025 estimate

• Cedar County

  Iowa · FIPS 19031

  18,359 residents · 2025 estimate

• Cerro Gordo County

  Iowa · FIPS 19033

  42,372 residents · 2025 estimate

• Cherokee County

  Iowa · FIPS 19035

  11,369 residents · 2025 estimate

• Chickasaw County

  Iowa · FIPS 19037

  11,663 residents · 2025 estimate

• Clarke County

  Iowa · FIPS 19039

  9,574 residents · 2025 estimate

• Clay County

  Iowa · FIPS 19041

  16,202 residents · 2025 estimate

• Clayton County

  Iowa · FIPS 19043

  16,845 residents · 2025 estimate

• Clinton County

  Iowa · FIPS 19045

  46,002 residents · 2025 estimate

• Crawford County

  Iowa · FIPS 19047

  16,237 residents · 2025 estimate

• Dallas County

  Iowa · FIPS 19049

  118,457 residents · 2025 estimate

• Davis County

  Iowa · FIPS 19051

  9,230 residents · 2025 estimate

• Decatur County

  Iowa · FIPS 19053

  7,655 residents · 2025 estimate

• Delaware County

  Iowa · FIPS 19055

  17,674 residents · 2025 estimate

• Des Moines County

  Iowa · FIPS 19057

  38,077 residents · 2025 estimate

• Dickinson County

  Iowa · FIPS 19059

  18,077 residents · 2025 estimate

• Dubuque County

  Iowa · FIPS 19061

  99,381 residents · 2025 estimate

• Emmet County

  Iowa · FIPS 19063

  9,107 residents · 2025 estimate

• Fayette County

  Iowa · FIPS 19065

  19,047 residents · 2025 estimate

• Floyd County

  Iowa · FIPS 19067

  14,901 residents · 2025 estimate

• Franklin County

  Iowa · FIPS 19069

  9,868 residents · 2025 estimate

• Fremont County

  Iowa · FIPS 19071

  6,522 residents · 2025 estimate

• Greene County

  Iowa · FIPS 19073

  8,658 residents · 2025 estimate

• Grundy County

  Iowa · FIPS 19075

  12,361 residents · 2025 estimate

• Guthrie County

  Iowa · FIPS 19077

  10,782 residents · 2025 estimate

• Hamilton County

  Iowa · FIPS 19079

  14,944 residents · 2025 estimate

• Hancock County

  Iowa · FIPS 19081

  10,528 residents · 2025 estimate

• Hardin County

  Iowa · FIPS 19083

  16,455 residents · 2025 estimate

• Harrison County

  Iowa · FIPS 19085

  14,623 residents · 2025 estimate

• Henry County

  Iowa · FIPS 19087

  19,349 residents · 2025 estimate

• Howard County

  Iowa · FIPS 19089

  9,415 residents · 2025 estimate

• Humboldt County

  Iowa · FIPS 19091

  9,409 residents · 2025 estimate

• Ida County

  Iowa · FIPS 19093

  6,777 residents · 2025 estimate

• Iowa County

  Iowa · FIPS 19095

  16,504 residents · 2025 estimate

• Jackson County

  Iowa · FIPS 19097

  19,288 residents · 2025 estimate

• Jasper County

  Iowa · FIPS 19099

  38,153 residents · 2025 estimate

• Jefferson County

  Iowa · FIPS 19101

  15,291 residents · 2025 estimate

• Johnson County

  Iowa · FIPS 19103

  160,044 residents · 2025 estimate

• Jones County

  Iowa · FIPS 19105

  21,253 residents · 2025 estimate

• Keokuk County

  Iowa · FIPS 19107

  9,797 residents · 2025 estimate

• Kossuth County

  Iowa · FIPS 19109

  14,322 residents · 2025 estimate

• Lee County

  Iowa · FIPS 19111

  32,306 residents · 2025 estimate

• Linn County

  Iowa · FIPS 19113

  232,028 residents · 2025 estimate

• Louisa County

  Iowa · FIPS 19115

  10,416 residents · 2025 estimate

• Lucas County

  Iowa · FIPS 19117

  8,847 residents · 2025 estimate

• Lyon County

  Iowa · FIPS 19119

  12,354 residents · 2025 estimate

• Madison County

  Iowa · FIPS 19121

  17,270 residents · 2025 estimate

• Mahaska County

  Iowa · FIPS 19123

  21,880 residents · 2025 estimate

• Marion County

  Iowa · FIPS 19125

  34,192 residents · 2025 estimate

• Marshall County

  Iowa · FIPS 19127

  39,890 residents · 2025 estimate

• Mills County

  Iowa · FIPS 19129

  14,793 residents · 2025 estimate

• Mitchell County

  Iowa · FIPS 19131

  10,650 residents · 2025 estimate

• Monona County

  Iowa · FIPS 19133

  8,539 residents · 2025 estimate

• Monroe County

  Iowa · FIPS 19135

  7,406 residents · 2025 estimate

• Montgomery County

  Iowa · FIPS 19137

  10,002 residents · 2025 estimate

• Muscatine County

  Iowa · FIPS 19139

  41,853 residents · 2025 estimate

• O'Brien County

  Iowa · FIPS 19141

  14,220 residents · 2025 estimate

• Osceola County

  Iowa · FIPS 19143

  5,980 residents · 2025 estimate

• Page County

  Iowa · FIPS 19145

  14,856 residents · 2025 estimate

• Palo Alto County

  Iowa · FIPS 19147

  8,899 residents · 2025 estimate

• Plymouth County

  Iowa · FIPS 19149

  25,697 residents · 2025 estimate

• Pocahontas County

  Iowa · FIPS 19151

  6,819 residents · 2025 estimate

• Polk County

  Iowa · FIPS 19153

  516,546 residents · 2025 estimate

• Pottawattamie County

  Iowa · FIPS 19155

  92,996 residents · 2025 estimate

• Poweshiek County

  Iowa · FIPS 19157

  18,368 residents · 2025 estimate

• Ringgold County

  Iowa · FIPS 19159

  4,642 residents · 2025 estimate

• Sac County

  Iowa · FIPS 19161

  9,525 residents · 2025 estimate

• Scott County

  Iowa · FIPS 19163

  175,259 residents · 2025 estimate

• Shelby County

  Iowa · FIPS 19165

  11,689 residents · 2025 estimate

• Sioux County

  Iowa · FIPS 19167

  36,774 residents · 2025 estimate

• Story County

  Iowa · FIPS 19169

  101,291 residents · 2025 estimate

• Tama County

  Iowa · FIPS 19171

  16,796 residents · 2025 estimate

• Taylor County

  Iowa · FIPS 19173

  5,835 residents · 2025 estimate

• Union County

  Iowa · FIPS 19175

  11,829 residents · 2025 estimate

• Van Buren County

  Iowa · FIPS 19177

  7,131 residents · 2025 estimate

• Wapello County

  Iowa · FIPS 19179

  35,210 residents · 2025 estimate

• Warren County

  Iowa · FIPS 19181

  57,331 residents · 2025 estimate

• Washington County

  Iowa · FIPS 19183

  22,667 residents · 2025 estimate

• Wayne County

  Iowa · FIPS 19185

  6,738 residents · 2025 estimate

• Webster County

  Iowa · FIPS 19187

  36,838 residents · 2025 estimate

• Winnebago County

  Iowa · FIPS 19189

  10,251 residents · 2025 estimate

• Winneshiek County

  Iowa · FIPS 19191

  19,733 residents · 2025 estimate

• Woodbury County

  Iowa · FIPS 19193

  106,649 residents · 2025 estimate

• Worth County

  Iowa · FIPS 19195

  7,338 residents · 2025 estimate

• Wright County

  Iowa · FIPS 19197

  12,801 residents · 2025 estimate

Use the county data

Use a county reference when organizing a market-research brief, outreach territory or business calculation. County population gives geographic context; it does not measure the number of qualified customers.

These are geographic reference records, not contact lists or verified sales leads.

Geography: 2025 U.S. Census Gazetteer. Population: Vintage 2025 estimates, July 1, 2025. County equivalents include parishes, boroughs, independent cities and planning regions. Puerto Rico population is not supplied by this population file.