The following counties satisfy your query:
| County | Population | County Seat | State | Links |
| Douglas County, CO | 175766 | Castle Rock | Colorado | View Public Records for Douglas County, CO |
| Douglas County, GA | 92174 | Douglasville | Georgia | View Public Records for Douglas County, GA |
| Douglas County, IL | 19922 | Tuscola | Illinois | View Public Records for Douglas County, IL |
| Douglas County, KS | 99962 | Lawrence | Kansas | View Public Records for Douglas County, KS |
| Douglas County, MN | 32821 | Alexandria | Minnesota | View Public Records for Douglas County, MN |
| Douglas County, MO | 13084 | Ava | Missouri | View Public Records for Douglas County, MO |
| Douglas County, NE | 463585 | Omaha | Nebraska | View Public Records for Douglas County, NE |
| Douglas County, NV | 41259 | Minden | Nevada | View Public Records for Douglas County, NV |
| Douglas County, OR | 100399 | Roseburg | Oregon | View Public Records for Douglas County, OR |
| Douglas County, SD | 3458 | Armour | South Dakota | View Public Records for Douglas County, SD |
| Douglas County, WA | 32603 | Waterville | Washington | View Public Records for Douglas County, WA |
| Douglas County, WI | 43287 | Superior | Wisconsin | View Public Records for Douglas County, WI |