County · code 40109
Oklahoma CountyOklahoma
Oklahoma County is located in Oklahoma with its seat in Oklahoma City and was created in 1890.
- Founded1890
- County seatOklahoma City
- Named forOklahoma
- Land area709 sq mi + 9.5 sq mi water
- Population796,292 2020 Census
- Parcels mapped329,963 checked 15 October 2026
Where it is
Oklahoma on the map of Oklahoma
Oklahoma has 77 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Founded in 1890
An old deed may name a county that no longer exists, or a boundary that has since moved.
Oklahoma County was formed in 1890, and named after Oklahoma. Oklahoma City is the county seat.
- 1890Oklahoma County created County No. 2, which became Oklahoma, was created in Oklahoma Territory by proclamation of the Territorial Governor. · "Proclamation," Weekly Oklahoma State Capital [newspaper], 7 June 1890; U.S. Stat., vol. 26, ch. 182[1890], sec. 4/p. 83; Morris, 118
- 1891Gained territory Oklahoma gained from Cleveland and gained non-county area in Oklahoma Territory by proclamation of the U. S. Asst. Secretary of the Interior.from Clevelandfrom U. S.· "Will Open," Weekly Oklahoma State Capital [newspaper], 25 July 1891; Morris, 119-120; Morris, Goins, and McReynolds, map 54
- 1907Became part of Oklahoma Oklahoma became a county in the state of Oklahoma. · Okla. Constitution [1907], art. 17, sec. 8; Swindler, 8:151
Land and parcels
What the maps cover in Oklahoma
Who publishes each layer, how good it is, and when we last checked.
-
Parcels Good enough
Lot lines and tax-map numbers for 329,963 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 13 September 2024 · checked 15 October 2026 -
Address points Missing
No public address points layer found for Oklahoma County yet.
-
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
Oklahoma 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
Oklahoma County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of Oklahoma County.
See your own lot on these maps
Open Oklahoma 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 Oklahoma County
- When was Oklahoma County founded?
- Oklahoma County was founded in 1890, and named after Oklahoma.
- What is the county seat of Oklahoma County?
- The county seat of Oklahoma County is Oklahoma City.
- Is there an online parcel map for Oklahoma County?
- Yes. A public source publishes a parcel map of 329,963 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Oklahoma County's boundary or name changed?
- Oklahoma County was created in 1890. Since then the Atlas of Historical County Boundaries records 2 later changes, chiefly involving Cleveland County and U. S. County.
- Is my lot in a flood zone?
- We do not have flood maps for Oklahoma County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby