| Iowa County Formation years | ||||||||||||||
| 1816 | 1818 | 1821 | 1834 | 1836 | 1837 | 1838 | 1840 | 1841 | 1843 | 1844 | 1845 | 1846 | 1847 | 1848 |
| 1849 | 1850 | 1851 | 1852 | 1853 | 1854 | 1855 | 1856 | 1857 | 1858 | 1859 | 1860 | 1861 | 1865 | 1870 |
| 1871 | 1872 | |||||||||||||
| Iowa Census Year with Modern Map overlayed: | ||||||||||||||
| 1820 | 1830 | 1840 | 1850 | 1860 | 1870 | 1880 - 1930 | ||||||||
| Iowa Map Abbreviations | ||||
|---|---|---|---|---|
|
unorg. = unorganized g. = gained w. = with fr. = from atmt. = attachment exch = exchanged nca.= non county area ch. = changed Adm - Adams Adr - Adair Al - Allamakee Ap - Appanoose Au - Audubon Be - Benton BH - Black Hawk Bo - Boone Br - Bremer Buc - Buchanan But - Butler BV - Buena Vista Cal - Calhoun |
Car - Carroll Cas - Cass Ced - Cedar CG - Cerro Gordo Che - Cherokee Chi - Chickasaw Clk - Clarke Cly - Clay Cnn - Clinton Cra - Crawford Cyn - Clayton Dal - Dallas Dav - Davis Dec - Decatur Del - Delaware Di - Dickinson DM - Des Moines Du - Dubuque Em - Emmet Fa - Fayette Fl - Floyd Fra - Franklin |
Fre - Fremont Gre - Greene Gru - Grundy Gu - Guthrie Ham - Hamilton Han - Hancock Hdn - Hardin He - Henry Ho - Howard Hsn - Harrison Hu - Humboldt Ida - Ida Io - Iowa Jac - Jackson Jas - Jasper Je - Jefferson Joh - Johnson Jon - Jones Ke - Keokuk Ko - Kossuth Lee - Lee Li - Linn |
Lo - Louisa Lu - Lucas Ly - Lyon Mad - Madison Mah - Mahaska Mil - Mills Mit - Mitchell Mna - Monona Mrn - Marion Mro - Monroe Msl - Marshall Mty - Montgomery Mu - Muscatine OB - O'Brien Os - Osceola PA - Palo Alto Pag - Page Pl - Plymouth Poc - Pocahontas Pol - Polk Pot - Pottawattamie Pow - Poweshiek |
Rin - Ringgold Sac - Sac Sc - Scott Sh - Shelby Si - Sioux St - Story Tam - Tama Tay - Taylor Un - Union VB - Van Buren Wap - Wapello War - Warren Was - Washington Way - Wayne We - Webster Win - Winnebago Woo - Woodbury Wor - Worth Wr - Wright Wsk - Winneshiek |