Johnson County, Kansas
Johnson County is a county in Kansas. Its county FIPS code is 20091. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 20091
- Representative coordinates
- 38.883907, -94.822330
- County type
- County
- County seat or government
- Olathe
- Resident population, July 2025
- 636,906
- Land area
- 1,226.694 km²
- Water area
- 16.305 km²
- State
- Kansas
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Johnson County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
66013 · 66018 · 66021 · 66025 · 66030 · 66031 · 66061 · 66062 · 66083 · 66085 · 66202 · 66203 · 66204 · 66205 · 66206 · 66207 · 66208 · 66209 · 66210 · 66211 · 66212 · 66213 · 66214 · 66215 · 66216 · 66217 · 66218 · 66219 · 66220 · 66221 · 66223 · 66224 · 66226 · 66227 · 66251
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Bonner Springs city, KS
- De Soto city, KS
- Edgerton city, KS
- Fairway city, KS
- Gardner city, KS
- Lake Quivira city, KS
- Leawood city, KS
- Lenexa city, KS
- Merriam city, KS
- Mission city, KS
- Mission Hills city, KS
- Mission Woods city, KS
- Olathe city, KS
- Overland Park city, KS
- Prairie Village city, KS
- Roeland Park city, KS
- Shawnee city, KS
- Spring Hill city, KS
- Westwood city, KS
- Westwood Hills city, KS
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.