County GIS · State lines · October 19, 2026
Kansas–Missouri Border Counties: Parcel Maps on Both Sides
All 22 counties on the Kansas–Missouri 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–Missouri border and their parcel maps? According to the Census Bureau's county adjacency file, 10 Kansas counties touch 12 Missouri 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–Missouri border at a glance
- Counties on the line: 22 (10 in Kansas, 12 in Missouri)
- With a verified public parcel viewer in our directory: 22 of 22
- Residents, 2023 estimates: about 1,011,951 on the Kansas side and 1,540,751 on the Missouri side
- Most populous on each side: Johnson County, KS (622,237) and Jackson County, MO (718,560)
- Largest by land area: Bourbon County, KS (635 sq mi) and Bates County, MO (837 sq mi)
Kansas counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Atchison County | Atchison | 431 | 16,016 | ORKA (Kansas) |
| Bourbon County | Fort Scott | 635 | 14,408 | ORKA (Kansas) |
| Cherokee County | Columbus | 588 | 19,054 | ArcGIS Web AppBuilder |
| Crawford County | Girard | 590 | 38,764 | ORKA (Kansas) |
| Doniphan County | Troy | 393 | 7,493 | ORKA (Kansas) |
| Johnson County | Olathe | 474 | 622,237 | county web map |
| Leavenworth County | Leavenworth | 463 | 83,518 | ORKA (Kansas) |
| Linn County | Mound City | 594 | 9,860 | county web map |
| Miami County | Paola | 576 | 35,320 | Beacon (Schneider Geospatial) |
| Wyandotte County | Kansas City | 152 | 165,281 | ORKA (Kansas) |
Missouri counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Andrew County | Savannah | 433 | 18,127 | IntegrityGIS |
| Barton County | Lamar | 592 | 11,731 | county web map |
| Bates County | Butler | 837 | 16,242 | IntegrityGIS |
| Buchanan County | St. Joseph | 408 | 82,956 | IntegrityGIS |
| Cass County | Harrisonville | 697 | 111,732 | CAMAvision Maps |
| Clay County | Liberty | 398 | 259,772 | county web map |
| Holt County | Oregon | 463 | 4,248 | IntegrityGIS |
| Jackson County | Independence, Kansas City | 605 | 718,560 | county web map |
| Jasper County | Carthage | 639 | 125,056 | Beacon (Schneider Geospatial) |
| Newton County | Neosho | 625 | 60,677 | IntegrityGIS |
| Platte County | Platte City | 420 | 111,940 | Beacon (Schneider Geospatial) |
| Vernon County | Nevada | 826 | 19,710 | IntegrityGIS |
Which counties face each other
Here is who borders whom across the line, based on the Census Bureau adjacency file:
- Atchison County, KS borders Buchanan County, MO, Platte County, MO
- Bourbon County, KS borders Vernon County, MO
- Cherokee County, KS borders Jasper County, MO, Newton County, MO
- Crawford County, KS borders Barton County, MO, Jasper County, MO, Vernon County, MO
- Doniphan County, KS borders Andrew County, MO, Buchanan County, MO, Holt County, MO
- Johnson County, KS borders Cass County, MO, Jackson County, MO
- Leavenworth County, KS borders Platte County, MO
- Linn County, KS borders Bates County, MO, Vernon County, MO
- Miami County, KS borders Bates County, MO, Cass County, MO
- Wyandotte County, KS borders Clay County, MO, Jackson County, MO, Platte County, MO
What changes when you cross the line
- Different viewers. On the Kansas side the official maps run on: ORKA (Kansas) (6); county web map (2); ArcGIS Web AppBuilder (1); Beacon (Schneider Geospatial) (1). On the Missouri side: IntegrityGIS (6); county web map (3); Beacon (Schneider Geospatial) (2); CAMAvision Maps (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
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 · Missouri 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 19, 2026) for each county's official parcel viewer.
- County seats: Wikidata (county seat property), cross-checked against Census place names.