US state county reference · Census geography
Browse all 99 counties represented in the Census-derived county geometry for Iowa. Use the FIPS list for reference, open the printable state map, or move into MapBench's county and demographic tools for interactive analysis.
Reviewed 14 Oct 2026 by Aryan Khan · source and boundary notes in Data Sources.
Open blank, labeled and colored boundary variants, then export SVG or PNG.
Open map →Compare population, income, age, poverty, education and housing across counties in a selected state.
Explore counties →Identify the county-equivalent for an address, GPS location or coordinate and see its Census FIPS code.
Open lookup →The five-digit GEOID combines state FIPS 19 with the three-digit county-equivalent code. Names are taken from the Census-derived geometry bundled with MapBench.
| # | County | GEOID / FIPS |
|---|---|---|
| 1 | Adair | 19001 |
| 2 | Adams | 19003 |
| 3 | Allamakee | 19005 |
| 4 | Appanoose | 19007 |
| 5 | Audubon | 19009 |
| 6 | Benton | 19011 |
| 7 | Black Hawk | 19013 |
| 8 | Boone | 19015 |
| 9 | Bremer | 19017 |
| 10 | Buchanan | 19019 |
| 11 | Buena Vista | 19021 |
| 12 | Butler | 19023 |
| 13 | Calhoun | 19025 |
| 14 | Carroll | 19027 |
| 15 | Cass | 19029 |
| 16 | Cedar | 19031 |
| 17 | Cerro Gordo | 19033 |
| 18 | Cherokee | 19035 |
| 19 | Chickasaw | 19037 |
| 20 | Clarke | 19039 |
| 21 | Clay | 19041 |
| 22 | Clayton | 19043 |
| 23 | Clinton | 19045 |
| 24 | Crawford | 19047 |
| 25 | Dallas | 19049 |
| 26 | Davis | 19051 |
| 27 | Decatur | 19053 |
| 28 | Delaware | 19055 |
| 29 | Des Moines | 19057 |
| 30 | Dickinson | 19059 |
| 31 | Dubuque | 19061 |
| 32 | Emmet | 19063 |
| 33 | Fayette | 19065 |
| 34 | Floyd | 19067 |
| 35 | Franklin | 19069 |
| 36 | Fremont | 19071 |
| 37 | Greene | 19073 |
| 38 | Grundy | 19075 |
| 39 | Guthrie | 19077 |
| 40 | Hamilton | 19079 |
| 41 | Hancock | 19081 |
| 42 | Hardin | 19083 |
| 43 | Harrison | 19085 |
| 44 | Henry | 19087 |
| 45 | Howard | 19089 |
| 46 | Humboldt | 19091 |
| 47 | Ida | 19093 |
| 48 | Iowa | 19095 |
| 49 | Jackson | 19097 |
| 50 | Jasper | 19099 |
| 51 | Jefferson | 19101 |
| 52 | Johnson | 19103 |
| 53 | Jones | 19105 |
| 54 | Keokuk | 19107 |
| 55 | Kossuth | 19109 |
| 56 | Lee | 19111 |
| 57 | Linn | 19113 |
| 58 | Louisa | 19115 |
| 59 | Lucas | 19117 |
| 60 | Lyon | 19119 |
| 61 | Madison | 19121 |
| 62 | Mahaska | 19123 |
| 63 | Marion | 19125 |
| 64 | Marshall | 19127 |
| 65 | Mills | 19129 |
| 66 | Mitchell | 19131 |
| 67 | Monona | 19133 |
| 68 | Monroe | 19135 |
| 69 | Montgomery | 19137 |
| 70 | Muscatine | 19139 |
| 71 | O'Brien | 19141 |
| 72 | Osceola | 19143 |
| 73 | Page | 19145 |
| 74 | Palo Alto | 19147 |
| 75 | Plymouth | 19149 |
| 76 | Pocahontas | 19151 |
| 77 | Polk | 19153 |
| 78 | Pottawattamie | 19155 |
| 79 | Poweshiek | 19157 |
| 80 | Ringgold | 19159 |
| 81 | Sac | 19161 |
| 82 | Scott | 19163 |
| 83 | Shelby | 19165 |
| 84 | Sioux | 19167 |
| 85 | Story | 19169 |
| 86 | Tama | 19171 |
| 87 | Taylor | 19173 |
| 88 | Union | 19175 |
| 89 | Van Buren | 19177 |
| 90 | Wapello | 19179 |
| 91 | Warren | 19181 |
| 92 | Washington | 19183 |
| 93 | Wayne | 19185 |
| 94 | Webster | 19187 |
| 95 | Winnebago | 19189 |
| 96 | Winneshiek | 19191 |
| 97 | Woodbury | 19193 |
| 98 | Worth | 19195 |
| 99 | Wright | 19197 |
Counties are the standard county-level administrative geography in most states, but Census county-equivalents also include Louisiana parishes, Alaska boroughs and census areas, independent cities in some states, and the District of Columbia. MapBench uses the Census-style county-equivalent concept so geographic lookups and FIPS references stay consistent across the country.
This page is a geographic reference list, not a legal boundary record. County names and generalized map geometry are appropriate for education, data joins and broad analysis. Election districts, parcels, municipal limits and legally current local boundaries should be verified with the responsible authority.