Platte County, Missouri

Platte County, Missouri, has 114,400 residents (July 2025 estimate). Its county seat is Platte City. It uses Central Time and covers 420 sq mi (1,087 km²) of land.

Kansas CitySt. LouisSpringfield
Platte County in Missouri
Leavenworth CountyClay CountySmithvilleParkvillePlatte CityRiverside
Platte County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
114,400
Land area
420 sq mi (1,087 km²)
County seat or government
Platte City
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$96,227 ± $2,175
Median home value
$345,100 ± $8,630
Median rent, with utilities
$1,334 ± $39
Homes lived in by their owners
67.4% ± 1.4 points
County type
County
Metro or micro area
Kansas City, MO-KS metro areaCentral county
Water area
6.52 sq mi (16.9 km²)
State
Missouri
County code (FIPS)
29165
Coordinates (central point)
39.378690, -94.761476

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 Platte 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. 6411841,984 people
  2. 6415231,545 people
  3. 6415528,824 people
  4. 6415128,526 people
  5. 6407915,160 people
  6. 6408914,380 people
  7. 6415413,851 people
  8. 641536,653 people
  9. 641504,463 people
  10. 640983,311 people
  11. 644921,713 people
  12. 644391,537 people
All 20
  1. 641631,181 people
  2. 644441,043 people
  3. 64018981 people
  4. 64484940 people
  5. 64440900 people
  6. 64028309 people
  7. 64164208 people
  8. 640920 people

20 ZIP Code areas overlap Platte 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 Platte County, largest first

  1. May Township30,334 people
  2. Carroll Township18,497 people
  3. Fox Township14,307 people
  4. Sioux Township13,284 people
  5. Pawnee Township10,587 people
  6. Kickapoo Township6,800 people
  7. Pettis Township5,798 people
  8. Weston Township2,598 people
  9. Green Township2,115 people
  10. Preston Township1,688 people
  11. Fair Township1,460 people
  12. Waldron Township1,224 people
All 14
  1. Marshall Township930 people
  2. Lee Township749 people

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

School districts in Platte County, largest first

  1. North Kansas City 74 School District144,320 people
  2. Park Hill School District77,197 people
  3. Platte County R-III School District27,544 people
  4. Smithville R-II School District14,791 people
  5. East Buchanan County C-1 School District4,560 people
  6. West Platte County R-II School District4,208 people
  7. North Platte County R-I School District4,179 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. Kansas City, Missouri (city)510,612 people
  2. Smithville, Missouri (city)10,705 people
  3. Parkville, Missouri (city)8,366 people
  4. Platte City, Missouri (city)4,824 people
  5. Riverside, Missouri (city)4,276 people
  6. Weatherby Lake, Missouri (city)2,401 people
  7. Weston, Missouri (city)1,922 people
  8. Lake Waukomis, Missouri (city)1,170 people
  9. Ferrelview, Missouri (village)752 people
  10. Dearborn, Missouri (city)557 people
  11. Platte Woods, Missouri (city)532 people
  12. Edgerton, Missouri (city)518 people
All 20
  1. Camden Point, Missouri (city)401 people
  2. Northmoor, Missouri (city)371 people
  3. Farley, Missouri (village)309 people
  4. Tracy, Missouri (city)309 people
  5. Houston Lake, Missouri (city)271 people
  6. Ridgely, Missouri (village)84 people
  7. New Market, Missouri (CDP)52 people
  8. Iatan, Missouri (village)38 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Wyandotte County, Kansas18 mi south
  2. Clay County, Missouri19 mi east
  3. Buchanan County, Missouri20 mi north
  4. Leavenworth County, Kansas20 mi southwest
  5. Clinton County, Missouri25 mi northeast
  6. Atchison County, Kansas31 mi west

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.