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Where am ILOCATED

Johnson County, Kansas

Johnson County, Kansas, has 636,906 residents (July 2025 estimate). Its county seat is Olathe. It uses Central Time and covers 474 sq mi (1,227 km²) of land.

WichitaKansas City
Johnson County in Kansas
Overland ParkOlatheShawneeLenexaLeawood
Johnson County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
636,906
Land area
474 sq mi (1,227 km²)
County seat or government
Olathe
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$109,208 ± $1,170
Median home value
$391,200 ± $3,069
Median rent, with utilities
$1,434 ± $16
Homes lived in by their owners
68.5% ± 0.6 points
County type
County
Metro or micro area
Kansas City, MO-KS metro areaCentral county
Water area
6.3 sq mi (16.3 km²)
State
Kansas
County code (FIPS)
20091
Coordinates (central point)
38.883907, -94.822330
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Johnson County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 6606278,841 people
  2. 6606167,967 people
  3. 6621232,917 people
  4. 6621330,539 people
  5. 6603026,328 people
  6. 6621525,960 people
  7. 6622125,550 people
  8. 6621624,881 people
  9. 6622324,747 people
  10. 6620821,576 people
  11. 6620920,413 people
  12. 6621020,347 people
All 35
  1. 6620319,441 people
  2. 6620417,948 people
  3. 6620217,408 people
  4. 6622616,219 people
  5. 6620715,739 people
  6. 6620514,032 people
  7. 6621913,519 people
  8. 6608313,011 people
  9. 6622412,683 people
  10. 6621412,351 people
  11. 6620612,153 people
  12. 6608511,486 people
  13. 662279,595 people
  14. 662188,820 people
  15. 662208,535 people
  16. 660258,083 people
  17. 660186,584 people
  18. 662115,791 people
  19. 662175,468 people
  20. 660212,819 people
  21. 660132,735 people
  22. 66031655 people
  23. 662518 people

35 ZIP Code areas overlap Johnson County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Johnson County, largest first

  1. Aubry Township4,663 people
  2. Gardner Township2,540 people
  3. Oxford Township2,089 people
  4. Spring Hill Township2,041 people
  5. Lexington Township1,248 people
  6. McCamish Township965 people
  7. Olathe Township497 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Kansas, by county

School districts in Johnson County, largest first

  1. Shawnee Mission Public Schools Unified School District232,095 people
  2. Olathe Unified School District 233165,976 people
  3. Blue Valley Unified School District 229135,858 people
  4. De Soto Unified School District 23239,078 people
  5. Gardner Edgerton Unified School District 23130,199 people
  6. Spring Hill Unified School District 23022,347 people
  7. Eudora Unified School District 4917,827 people
  8. Wellsville Unified School District 2894,595 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Overland Park, Kansas (city)200,306 people
  2. Olathe, Kansas (city)145,057 people
  3. Shawnee, Kansas (city)68,542 people
  4. Lenexa, Kansas (city)58,384 people
  5. Leawood, Kansas (city)33,809 people
  6. Gardner, Kansas (city)24,526 people
  7. Prairie Village, Kansas (city)22,874 people
  8. Merriam, Kansas (city)11,085 people
  9. Mission, Kansas (city)9,915 people
  10. Spring Hill, Kansas (city)9,120 people
  11. Bonner Springs, Kansas (city)7,839 people
  12. Roeland Park, Kansas (city)6,763 people
All 20
  1. De Soto, Kansas (city)6,414 people
  2. Fairway, Kansas (city)4,159 people
  3. Mission Hills, Kansas (city)3,548 people
  4. Westwood, Kansas (city)2,093 people
  5. Edgerton, Kansas (city)1,924 people
  6. Lake Quivira, Kansas (city)940 people
  7. Westwood Hills, Kansas (city)469 people
  8. Mission Woods, Kansas (city)184 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Wyandotte County, Kansas16 mi north
  2. Miami County, Kansas22 mi south
  3. Leavenworth County, Kansas24 mi northwest
  4. Douglas County, Kansas25 mi west
  5. Jackson County, Missouri27 mi east
  6. Cass County, Missouri30 mi southeast
  7. Franklin County, Kansas33 mi southwest

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 where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.