County GIS · State lines · October 20, 2026
Kansas–Oklahoma Border Counties: Parcel Maps on Both Sides
All 27 counties on the Kansas–Oklahoma line, with seats, 2023 populations and a link to each official parcel map, plus what changes at the state line.
Looking for the counties on the Kansas–Oklahoma border and their parcel maps? According to the Census Bureau's county adjacency file, 14 Kansas counties touch 13 Oklahoma counties along the line. Each one keeps its own property records and its own parcel viewer, so land near the line often means checking two counties in two states.
A farm, hunting tract or lake lot can sit in one state while the road, the neighbors or the rest of the property are in the other. This page lists every county that touches the line on either side, with links to each official parcel map.
Kansas–Oklahoma border at a glance
- Counties on the line: 27 (14 in Kansas, 13 in Oklahoma)
- With a verified public parcel viewer in our directory: 27 of 27
- Residents, 2023 estimates: about 174,831 on the Kansas side and 246,786 on the Oklahoma side
- Most populous on each side: Cowley County, KS (34,157) and Washington County, OK (53,706)
- Largest by land area: Sumner County, KS (1,182 sq mi) and Osage County, OK (2,247 sq mi)
Kansas counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Barber County | Medicine Lodge | 1,134 | 4,071 | ORKA (Kansas) |
| Chautauqua County | Sedan | 639 | 3,347 | ORKA (Kansas) |
| Cherokee County | Columbus | 588 | 19,054 | ArcGIS Web AppBuilder |
| Clark County | Ashland | 975 | 1,847 | ORKA (Kansas) |
| Comanche County | Coldwater | 788 | 1,655 | ORKA (Kansas) |
| Cowley County | Winfield | 1,126 | 34,157 | ORKA (Kansas) |
| Harper County | Anthony | 801 | 5,435 | ORKA (Kansas) |
| Labette County | Oswego | 645 | 19,728 | ORKA (Kansas) |
| Meade County | Meade | 978 | 3,911 | ORKA (Kansas) |
| Montgomery County | Independence | 644 | 30,568 | ORKA (Kansas) |
| Morton County | Elkhart | 730 | 2,580 | ORKA (Kansas) |
| Seward County | Liberal | 640 | 21,067 | ORKA (Kansas) |
| Stevens County | Hugoton | 727 | 5,077 | ORKA (Kansas) |
| Sumner County | Wellington | 1,182 | 22,334 | ORKA (Kansas) |
Oklahoma counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Alfalfa County | Cherokee | 867 | 5,673 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Beaver County | Beaver | 1,815 | 5,018 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Cimarron County | Boise City | 1,835 | 2,191 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Craig County | Vinita | 761 | 14,494 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Grant County | Medford | 1,001 | 4,083 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Harper County | Buffalo | 1,039 | 3,190 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Kay County | Newkirk | 920 | 43,641 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Nowata County | Nowata | 566 | 9,438 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Osage County | Pawhuska | 2,247 | 46,130 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Ottawa County | Miami | 471 | 30,287 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Texas County | Guymon | 2,041 | 20,371 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Washington County | Bartlesville | 416 | 53,706 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Woods County | Alva | 1,286 | 8,564 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
Which counties face each other
Here is who borders whom across the line, based on the Census Bureau adjacency file:
- Barber County, KS borders Alfalfa County, OK, Woods County, OK
- Chautauqua County, KS borders Osage County, OK, Washington County, OK
- Cherokee County, KS borders Craig County, OK, Ottawa County, OK
- Clark County, KS borders Beaver County, OK, Harper County, OK
- Comanche County, KS borders Harper County, OK, Woods County, OK
- Cowley County, KS borders Kay County, OK, Osage County, OK
- Harper County, KS borders Alfalfa County, OK, Grant County, OK
- Labette County, KS borders Craig County, OK, Nowata County, OK
- Meade County, KS borders Beaver County, OK
- Montgomery County, KS borders Nowata County, OK, Washington County, OK
- Morton County, KS borders Cimarron County, OK, Texas County, OK
- Seward County, KS borders Beaver County, OK, Texas County, OK
- Stevens County, KS borders Texas County, OK
- Sumner County, KS borders Grant County, OK, Kay County, OK
What changes when you cross the line
- Different viewers. On the Kansas side the official maps run on: ORKA (Kansas) (13); ArcGIS Web AppBuilder (1). On the Oklahoma side: OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer (13). Search boxes, parcel ID formats and the details shown in pop-ups will differ.
- Different records offices. Deeds, plats and tax bills are kept by the county where the parcel sits.
- Different rules. Zoning, septic permits and property tax are set locally and by each state, so check with the county on the side where you plan to build or buy.
Researching a tract that crosses the line
- Find the parcel in both counties' viewers. Each side will show only its own piece, with its own parcel number.
- Pull the recorded deed from each county's register or recorder, since each county records only the land inside its own boundary.
- Expect two tax bills, one from each county, and check each state's rules for homestead or farm exemptions.
- For a sale, a fence or a building permit, hire a licensed surveyor familiar with the line; tax-map lines are drawings, not surveys.
A quick way to check which side a spot is on
Tap the spot on the Platbookmapper Land Map. Its land report names the county and links straight to that county's parcel viewer, plus FEMA flood, USGS elevation, USDA soil and wetland results.
Related guides
More: Kansas counties · Oklahoma counties
Sources
- U.S. Census Bureau county adjacency file, used for which counties share the line.
- U.S. Census Bureau Gazetteer files, 2020 county land area.
- U.S. Census Bureau, Population Estimates Program, county totals, Vintage 2023 (July 1, 2023 estimates)
- Platbookmapper county GIS directory (live data file behind our county pages, pulled October 20, 2026) for each county's official parcel viewer.
- County seats: Wikidata (county seat property), cross-checked against Census place names.