County · code 40115
Ottawa CountyOklahoma
Ottawa County is in northeastern Oklahoma, with its seat in Miami. The county was created in 1907 from former Indian Territory and named after the Odawa people.
- Founded1907
- County seatMiami
- Named forOdawa
- Land area471 sq mi + 14 sq mi water
- Population30,285 2020 Census
- Parcels mapped20,606 checked 16 October 2026
Where it is
Ottawa 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 1907
An old deed may name a county that no longer exists, or a boundary that has since moved.
Ottawa County was created on November 16, 1907, from former Indian Territory.
- 1907Ottawa County created Ottawa created from former Indian Territory. · Okla. Constitution [1907], art. 17, sec. 8; Swindler, 8:152
Land and parcels
What the maps cover in Ottawa
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 20,606 parcels from Oklahoma Water Resources Board. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026 -
Address points Missing
No public address points layer found for Ottawa County yet.
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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
Ottawa 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
Ottawa 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 Ottawa County.
See your own lot on these maps
Open Ottawa 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 Ottawa County
- When was Ottawa County founded?
- Ottawa County was founded in 1907, and named after Odawa.
- What is the county seat of Ottawa County?
- The county seat of Ottawa County is Miami.
- Is there an online parcel map for Ottawa County?
- Yes. Oklahoma Water Resources Board publishes a parcel map of 20,606 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Ottawa County's boundary or name changed?
- Ottawa County was created in 1907. The Atlas of Historical County Boundaries records no boundary change since.
- Is my lot in a flood zone?
- We do not have flood maps for Ottawa County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby