| County/Place | Population Percentage Change Latest to Earliest | Percentage Change in total owner occupied | Percentage Change in below 35 years age group | Percentage Change in 35 to 44 years age group | Percentage Change in 45 to 59 years age group | Percentage Change in above 60 years age group |
|---|---|---|---|---|---|---|
| United States | 4.99 | -0.81 | -18.96 | -17.74 | -2.61 | 17.58 |
| Iowa | 3.85 | -0.3 | -8.48 | -12.99 | -4.91 | 14.74 |
| Adair County | -1.71 | -0.16 | 7.63 | -33.83 | 7.83 | 4.91 |
| Adams County | -4.42 | -15.61 | -11.04 | -27.66 | -23.33 | -6.54 |
| Allamakee County | -2.5 | 5.64 | 7.17 | -32.2 | -6.38 | 36.44 |
| Appanoose County | -2.36 | -6.8 | -2.29 | -32.8 | -12.91 | 8.16 |
| Audubon County | -4.41 | 0.27 | 64.67 | -18.73 | -1.2 | -2.89 |
| Benton County | -3.1 | -0.39 | -8.66 | -21.81 | 4.33 | 12.18 |
| Black Hawk County | 4.03 | 0.33 | -0.56 | -4.07 | -9.32 | 11.28 |
| Boone County | 0.68 | 1.35 | 4.37 | -21.33 | -6.79 | 21.39 |
| Bremer County | 4.4 | -3.34 | -33.91 | -2.85 | -10.02 | 16.21 |
| Buchanan County | 0.42 | 1.97 | -1.06 | -11.65 | -1.64 | 14.58 |
| Buena Vista County | 4.77 | -0.85 | 38.15 | 0.6 | -11.2 | 0.4 |
| Butler County | 2.64 | -0.74 | 8.41 | -3.03 | -8.04 | 2.9 |
| Calhoun County | -0.5 | -3.65 | -0.51 | 1.04 | -16.98 | 5.12 |
| Carroll County | -0.65 | 1.25 | 27.29 | -15.22 | -4.71 | 6.69 |
| Cass County | -1.91 | -2.46 | -8.64 | -22.51 | -10.39 | 13.51 |
| Cedar County | 2.16 | 2.89 | 12.33 | -23.15 | 5.12 | 10.56 |
| Cerro Gordo County | -1.02 | -0.34 | -6.49 | -25.38 | -4.56 | 17.03 |
| Cherokee County | 1.47 | -4.26 | 30.33 | -7.93 | -19.83 | 1.4 |
| Chickasaw County | 0.69 | -3.49 | 10.5 | -32.09 | -5.84 | 7.15 |
| Clarke County | 2.34 | -7.83 | -38.92 | 4.55 | -21.54 | 11.98 |
| Clay County | -0.83 | -0.62 | -2.56 | -17.58 | -7.38 | 13.41 |
| Clayton County | 0.79 | 3.54 | 3.98 | -24.44 | 7.9 | 11.74 |
| Clinton County | -1.56 | -4.62 | -14.95 | -30.19 | -2.68 | 11.61 |
| Crawford County | 4.69 | -4.27 | -21.18 | -12.64 | -0.76 | 2.39 |
| Dallas County | 31.12 | 27.11 | 9.35 | 16.57 | 25.19 | 57.11 |
| Davis County | 2.26 | -9.29 | -6.97 | -34.32 | -15.43 | 7.26 |
| Decatur County | -0.87 | -6.6 | -40 | -1.56 | -14.99 | 10.47 |
| Delaware County | 0.36 | -4.96 | 7.4 | -19.35 | -16.26 | 9.03 |
| Des Moines County | -1.21 | -4.25 | -10.87 | -21.52 | -11.1 | 11.58 |
| Dickinson County | 2.11 | -4.58 | -2.54 | -14.84 | -23.61 | 13.95 |
| Dubuque County | 4.19 | -1.87 | -10.2 | -20.32 | -0.89 | 11.34 |
| Emmet County | -4.25 | -1.73 | -3.66 | -22.24 | 1.06 | 6.12 |
| Fayette County | 0.51 | -4.39 | 7.98 | -8.08 | -11.83 | 0.14 |
| Floyd County | -0.69 | 0.77 | -6.44 | -18.91 | 6.83 | 7.54 |
| Franklin County | -0.99 | 5.94 | 0.68 | 0.91 | 4.44 | 9.65 |
| Fremont County | -5.1 | -8.35 | -3.9 | -8.52 | -19.69 | 1.45 |
| Greene County | -3.32 | -9.53 | 9.14 | -36.17 | -10.6 | -3.71 |
| Grundy County | 1.98 | -0.33 | -11.66 | -12.14 | 4.28 | 5.48 |
| Guthrie County | -2.65 | -1.6 | -21.2 | -25.68 | -16.4 | 31.01 |
| Hamilton County | -1.66 | -12.14 | -30.38 | -25.4 | -17.61 | 6.35 |
| Hancock County | -2.18 | -1.5 | 20 | -17.13 | -14.57 | 11.64 |
| Hardin County | -0.53 | -2.59 | -22.2 | -15.29 | 1.16 | 4.57 |
| Harrison County | -6.12 | -9.21 | -22.17 | -26.76 | -12.51 | 8.5 |
| Henry County | 0.01 | -5.2 | -7.38 | -34.79 | -12.44 | 20.24 |
| Howard County | 0.06 | -3.42 | -17.68 | -29.51 | 5.33 | 9.15 |
| Humboldt County | 0.3 | -7.43 | -4.92 | -34.5 | -9.63 | 5.92 |
| Ida County | 1.43 | 2.01 | 43.03 | -18.11 | -3.72 | 3.35 |
| Iowa County | 3.18 | 5.72 | 3.47 | -5.19 | -2.22 | 22.1 |
| Jackson County | -1.61 | -4.02 | -10.66 | -24.52 | -6.44 | 9.15 |
| Jasper County | 0.33 | -3.27 | -17.14 | -19.13 | -14.68 | 23.1 |
| Jefferson County | 11.76 | -0.56 | -42.58 | -9.91 | -30.23 | 61.47 |
| Johnson County | 10.83 | 8.85 | 2.9 | -10.61 | 2.23 | 39.17 |
| Jones County | 0.96 | 7.43 | -1.75 | -6.38 | -3.77 | 28.15 |
| Keokuk County | -3.93 | -8.49 | -12.57 | -25.13 | -5.29 | -2.77 |
| Kossuth County | -1.39 | -4.63 | -13.37 | -25.78 | -1.73 | 2.43 |
| Lee County | -1.13 | -0.28 | 2.76 | -17.12 | -8.27 | 14.05 |
| Linn County | 5.7 | 3.65 | -16.06 | -3.28 | 1.67 | 21.83 |
| Louisa County | -3.31 | -4.17 | -6.14 | -20.69 | -16.53 | 22.51 |
| Lucas County | -7.22 | 7.41 | 10 | -4.94 | -12.85 | 34.14 |
| Lyon County | 3.98 | 0.43 | -16.58 | -12.06 | -4.89 | 23.86 |
| Madison County | 2.56 | 1.13 | -10.43 | -28.27 | 10.74 | 16.26 |
| Mahaska County | 1.37 | -5.5 | -17.96 | -11.19 | -13.79 | 11.2 |
| Marion County | 1.83 | -0.77 | 3.09 | -20.4 | 1.72 | 6.1 |
| Marshall County | 4.78 | -5.6 | -22.89 | -19.81 | -12 | 14.42 |
| Mills County | -1.26 | 0.7 | -21.13 | -7.89 | -1.25 | 16.63 |
| Mitchell County | -0.26 | 4.14 | 25.45 | 8.52 | -14.33 | 13.17 |
| Monona County | -0.33 | -7.83 | -41.29 | 8.28 | -5.5 | -4.86 |
| Monroe County | 5.12 | -1.27 | -15.48 | -13.03 | -1.06 | 7.8 |
| Montgomery County | -4.59 | -9.9 | -17.58 | -29.86 | -13.39 | 2.37 |
| Muscatine County | 1.1 | -5.6 | -24.21 | -14.19 | -16.47 | 22.75 |
| O'Brien County | 0.21 | -3.65 | -13.48 | -29.22 | -3.58 | 9.92 |
| Osceola County | -4.24 | 1.6 | 54.97 | -3.68 | 7.79 | -9.44 |
| Page County | -0.57 | -1.43 | -5.46 | -10.44 | -7.44 | 7.73 |
| Palo Alto County | -2.09 | 2.18 | 7.71 | -17.26 | 11.41 | 1.16 |
| Plymouth County | 2.04 | 1.12 | -11.61 | -13.7 | 2.21 | 12.19 |
| Pocahontas County | -5.9 | -10.63 | -39.9 | -15.67 | -13.65 | 4.1 |
| Polk County | 8.76 | -0.42 | -15.37 | -7.68 | -2.17 | 18.25 |
| Pottawattamie County | 4 | -1.57 | -17.44 | -21.14 | -4.86 | 21.05 |
| Poweshiek County | 0.76 | -9.99 | -19.42 | -33.11 | -6.49 | 0.71 |
| Ringgold County | -0.02 | -8.59 | -25 | -12.11 | -15.65 | 1.85 |
| Sac County | -2.04 | -2.05 | -8.03 | -20.19 | 1.32 | 3.19 |
| Scott County | 4.29 | -1.23 | -3.12 | -18.81 | -8.51 | 19.2 |
| Shelby County | -1.85 | 0.85 | -1.24 | -2.32 | -16.05 | 19.02 |
| Sioux County | 7.61 | 0.92 | 5.87 | -4.12 | -1.7 | 3.79 |
| Story County | 10.39 | 8.11 | 13.41 | -2.21 | -6.06 | 27.28 |
| Tama County | -1.02 | -5.65 | -25.3 | -5.7 | -18.2 | 14.06 |
| Taylor County | -3.43 | -9.64 | -10.73 | -24.92 | -12.9 | -1.77 |
| Union County | 4.13 | -0.81 | -28.3 | 8.04 | -11.15 | 14.7 |
| Van Buren County | -3 | 4.48 | -7.05 | -14.91 | 5.7 | 16.97 |
| Wapello County | -0.48 | -8.86 | -5.39 | -14.98 | -16.12 | -1.42 |
| Warren County | 7.58 | 8.37 | -5.93 | -5.58 | 5.71 | 28.5 |
| Washington County | 4.09 | 1.21 | 9.81 | -13.95 | 1.02 | 5.79 |
| Wayne County | 0.87 | -6.76 | 6.73 | -33.24 | -6.01 | -0.8 |
| Webster County | -3.02 | -9.17 | -14.66 | -25.89 | -10.87 | 0.8 |
| Winnebago County | -2.04 | -0.26 | -3.74 | -6.38 | -8.68 | 10.18 |
| Winneshiek County | 0.58 | 4.53 | 2.2 | -27.23 | 12.96 | 13.68 |
| Woodbury County | 0.75 | -2.45 | -10.1 | -5.64 | -8.2 | 8.72 |
| Worth County | -0.75 | -5.36 | -17.74 | -13.15 | -14.36 | 11.5 |
| Wright County | -0.79 | -0.46 | -5.08 | -19 | -11.99 | 19.39 |
Source: Gavop.com and Census Bureau