County GIS · State lines · October 20, 2026
Arkansas–Oklahoma Border Counties: Parcel Maps on Both Sides
All 13 counties on the Arkansas–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 Arkansas–Oklahoma border and their parcel maps? According to the Census Bureau's county adjacency file, 8 Arkansas counties touch 5 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.
Below you will find every county on both sides of the line, who borders whom, and what changes when you cross from one records office to the other.
Arkansas–Oklahoma border at a glance
- Counties on the line: 13 (8 in Arkansas, 5 in Oklahoma)
- With a verified public parcel viewer in our directory: 13 of 13
- Residents, 2023 estimates: about 820,275 on the Arkansas side and 181,877 on the Oklahoma side
- Most populous on each side: Benton County, AR (311,013) and Le Flore County, OK (49,596)
- Largest by land area: Washington County, AR (941 sq mi) and McCurtain County, OK (1,851 sq mi)
Arkansas counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Benton County | Bentonville | 848 | 311,013 | county web map |
| Crawford County | Van Buren | 595 | 61,891 | ArcGIS Map Viewer |
| Little River County | Ashdown | 531 | 11,805 | ArcGIS Map Viewer |
| Polk County | Mena | 857 | 19,436 | ArcGIS Map Viewer |
| Scott County | Waldron | 893 | 9,851 | ArcGIS Map Viewer |
| Sebastian County | Fort Smith, Greenwood | 531 | 129,098 | ArcGIS Map Viewer |
| Sevier County | De Queen | 564 | 15,632 | ArcGIS Map Viewer |
| Washington County | Fayetteville | 941 | 261,549 | ArcGIS Experience Builder |
Oklahoma counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Adair County | Stilwell | 574 | 19,627 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Delaware County | Jay | 738 | 41,703 | Spatialest |
| Le Flore County | Poteau | 1,589 | 49,596 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| McCurtain County | Idabel | 1,851 | 30,660 | OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer |
| Sequoyah County | Sallisaw | 674 | 40,291 | 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:
- Benton County, AR borders Adair County, OK, Delaware County, OK
- Crawford County, AR borders Adair County, OK, Sequoyah County, OK
- Little River County, AR borders McCurtain County, OK
- Polk County, AR borders Le Flore County, OK, McCurtain County, OK
- Scott County, AR borders Le Flore County, OK
- Sebastian County, AR borders Le Flore County, OK, Sequoyah County, OK
- Sevier County, AR borders McCurtain County, OK
- Washington County, AR borders Adair County, OK
What changes when you cross the line
- Different viewers. On the Arkansas side the official maps run on: ArcGIS Map Viewer (6); county web map (1); ArcGIS Experience Builder (1). On the Oklahoma side: OKMaps (Oklahoma Office of Geographic Information) - Statewide Parcels layer (4); Spatialest (1). 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
Open the Platbookmapper Land Map, search the nearest county, and tap the spot. The land report shows which county it falls in, along with flood zone, elevation, soil and wetlands, and links to that county's parcel map.
Related guides
More: Arkansas 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.