County · code 20209
Wyandotte CountyKansas
Wyandotte County is a county in Kansas with its seat in Kansas City. It was created in 1859 and has a population of 169,245.
- Founded1859
- County seatKansas City
- Named forWyandot people
- Land area152 sq mi + 4.6 sq mi water
- Population169,245 2020 Census
- Parcels mapped67,959 checked 15 October 2026
Where it is
Wyandotte on the map of Kansas
Kansas has 105 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1859 from Johnson County and Leavenworth County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Wyandotte County was created on January 29, 1859, by Kansas Territory from Johnson and Leavenworth counties. It was named after the Wyandot people. Wyandotte became a county in the state of Kansas on January 29, 1861.
- 1859Wyandotte County created Wyandotte created by Kansas Territory from Johnson and Leavenworth. · Kans. Terr. Laws 1859, 5th leg., ch. 47/pp. 362-364
- 1861Became part of Kansas Wyandotte became a county in the state of Kansas. · U.S. Stat., vol. 12, ch. 20 [1861]/pp. 126-128; Van Zandt, 138-139
Land and parcels
What the maps cover in Wyandotte
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 67,959 parcels from Wyandotte County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 15 October 2026 -
Address points Good enough
One point per address, 77,959 in all from Wyandotte County.
edited 28 September 2026 · checked 13 October 2026 -
Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Wyandotte by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Who to ask before you build, dig or sell
Official county pages only. We link to them; we do not copy them, because they change.
Inside a city or town, permits usually come from that city rather than the county.
Zoning and code
GIS and maps
County government
- County government
The official website of Wyandotte County.
See your own lot on these maps
Open Wyandotte County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Wyandotte County
- When was Wyandotte County founded?
- Wyandotte County was founded in 1859, formed from Johnson County and Leavenworth County, and named after Wyandot people.
- What is the county seat of Wyandotte County?
- The county seat of Wyandotte County is Kansas City.
- Is there an online parcel map for Wyandotte County?
- Yes. Wyandotte County publishes a parcel map of 67,959 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Wyandotte County's boundary or name changed?
- Wyandotte County was created in 1859 from Johnson County and Leavenworth County. Since then the Atlas of Historical County Boundaries records 1 later change.
- Who issues building permits in Wyandotte County?
- The county's page on building permits: Permits & Paperwork. Inside a city or town, ask that city first.
- Is my lot in a flood zone?
- We do not have flood maps for Wyandotte County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby