Property research by county
Adair County, Oklahoma
Use the county name and FIPS code to identify the correct jurisdiction before collecting parcel, assessor, recorder or court information. Compare this national reference with the separate property-data coverage directory.
Identify the right place
Adair County is a county or county equivalent in Oklahoma. Its five-digit FIPS code is 40001; preserve the leading zero when storing county codes as text. The Gazetteer lists 3.42 square miles of water and a representative point at 35.898043, -94.651026. That point identifies the geography; it is not a street address or a site boundary.
Open this county in Census data · Download this county as JSON
Property research by county checklist
- Confirm the parcel jurisdiction; postal cities can cross county boundaries.
- Identify the official assessor, recorder and court source for the question.
- Check the collection date and source coverage before using a record.
National geographic coverage does not mean that parcel records or probate feeds are connected for every county.
Sources and interpretation
Geography: 2025 U.S. Census Gazetteer. Population: Vintage 2025 estimates, July 1, 2025. County equivalents include parishes, boroughs, independent cities and planning regions. Puerto Rico population is not supplied by this population file.
Population is an estimate, not a live count. Gazetteer land and water measures describe the geographic area; they do not measure service availability, households, businesses or market demand. Match the FIPS code and source vintage when joining another dataset.
More county references in Oklahoma
- Alfalfa County
Oklahoma · FIPS 40003
5,649 residents · 2025 estimate