Kansas Population By County in 2021 (ACS-5Yrs)
Updated on July 2, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, the total population of Kansas was 2.93M. Among all Kansas counties, Johnson was the most populated county (605.15K), followed by Sedgwick (520.47K), and then Shawnee (179.05K).
On the other hand, the least populated counties were: Greeley (1.26K), Lane (1.50K), and Wallace (1.53K).
The chart and table below shows the population of each county and the percentage of Kansas population in each county.
You can see similar information for other states and by state for the United States.
Related Topics: Kansas ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census - ACS 5-Year Estimates, 2021 Census.
Kansas Population By County in 2021
Kansas Population By County in 2021
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| County | Population | % of State Population |
|---|---|---|
| Allen | 12557 | 0.43 |
| Anderson | 7800 | 0.27 |
| Atchison | 16382 | 0.56 |
| Barber | 4178 | 0.14 |
| Barton | 25708 | 0.88 |
| Bourbon | 14410 | 0.49 |
| Brown | 9532 | 0.33 |
| Butler | 67404 | 2.30 |
| Chase | 2583 | 0.09 |
| Chautauqua | 3394 | 0.12 |
| Cherokee | 19507 | 0.67 |
| Cheyenne | 2647 | 0.09 |
| Clark | 1994 | 0.07 |
| Clay | 8085 | 0.28 |
| Cloud | 9037 | 0.31 |
| Coffey | 8361 | 0.28 |
| Comanche | 1809 | 0.06 |
| Cowley | 34769 | 1.19 |
| Crawford | 39018 | 1.33 |
| Decatur | 2792 | 0.10 |
| Dickinson | 18572 | 0.63 |
| Doniphan | 7549 | 0.26 |
| Douglas | 118690 | 4.05 |
| Edwards | 2911 | 0.10 |
| Elk | 2466 | 0.08 |
| Ellis | 28893 | 0.99 |
| Ellsworth | 6403 | 0.22 |
| Finney | 38338 | 1.31 |
| Ford | 34426 | 1.17 |
| Franklin | 25953 | 0.89 |
| Geary | 36514 | 1.25 |
| Gove | 2774 | 0.10 |
| Graham | 2444 | 0.08 |
| Grant | 7430 | 0.25 |
| Gray | 5720 | 0.20 |
| Greeley | 1257 | 0.04 |
| Greenwood | 6049 | 0.21 |
| Hamilton | 2572 | 0.09 |
| Harper | 5525 | 0.19 |
| Harvey | 34006 | 1.16 |
| Haskell | 3803 | 0.13 |
| Hodgeman | 1851 | 0.06 |
| Jackson | 13287 | 0.45 |
| Jefferson | 18391 | 0.63 |
| Jewell | 2927 | 0.10 |
| Johnson | 605154 | 20.64 |
| Kearny | 4019 | 0.14 |
| Kingman | 7495 | 0.26 |
| Kiowa | 2457 | 0.08 |
| Labette | 20222 | 0.69 |
| Lane | 1504 | 0.05 |
| Leavenworth | 81601 | 2.78 |
| Lincoln | 2952 | 0.10 |
| Linn | 9667 | 0.33 |
| Logan | 2777 | 0.10 |
| Lyon | 32318 | 1.10 |
| McPherson | 30059 | 1.02 |
| Marion | 11877 | 0.41 |
| Marshall | 9995 | 0.34 |
| Meade | 4089 | 0.14 |
| Miami | 33968 | 1.16 |
| Mitchell | 5884 | 0.20 |
| Montgomery | 31679 | 1.08 |
| Morris | 5377 | 0.18 |
| Morton | 2744 | 0.09 |
| Nemaha | 10197 | 0.35 |
| Neosho | 15926 | 0.54 |
| Ness | 2717 | 0.09 |
| Norton | 5457 | 0.19 |
| Osage | 15811 | 0.54 |
| Osborne | 3512 | 0.12 |
| Ottawa | 5778 | 0.20 |
| Pawnee | 6356 | 0.22 |
| Phillips | 5022 | 0.17 |
| Pottawatomie | 25082 | 0.86 |
| Pratt | 9266 | 0.32 |
| Rawlins | 2531 | 0.09 |
| Reno | 62071 | 2.12 |
| Republic | 4707 | 0.16 |
| Rice | 9464 | 0.32 |
| Riley | 72602 | 2.48 |
| Rooks | 4975 | 0.17 |
| Rush | 2883 | 0.10 |
| Russell | 6747 | 0.23 |
| Saline | 54378 | 1.86 |
| Scott | 5163 | 0.18 |
| Sedgwick | 520467 | 17.75 |
| Seward | 22223 | 0.76 |
| Shawnee | 179053 | 6.11 |
| Sheridan | 2459 | 0.08 |
| Sherman | 5965 | 0.20 |
| Smith | 3588 | 0.12 |
| Stafford | 4106 | 0.14 |
| Stanton | 2088 | 0.07 |
| Stevens | 5320 | 0.18 |
| Sumner | 22603 | 0.77 |
| Thomas | 7902 | 0.27 |
| Trego | 2825 | 0.10 |
| Wabaunsee | 6881 | 0.24 |
| Wallace | 1529 | 0.05 |
| Washington | 5531 | 0.19 |
| Wichita | 2150 | 0.07 |
| Wilson | 8713 | 0.30 |
| Woodson | 3162 | 0.11 |
| Wyandotte | 168333 | 5.74 |