County GIS · State lines · October 20, 2026
Louisiana–Texas Border Counties: Parcel Maps on Both Sides
All 16 counties and parishes on the Louisiana–Texas line, with seats, populations and each official parcel map, plus what changes at the line.
Looking for the counties on the Louisiana–Texas border and their parcel maps? According to the Census Bureau's county adjacency file, 7 Louisiana parishes touch 9 Texas counties along the line. Louisiana calls its counties parishes, and the Census Bureau counts them as county equivalents. Each one keeps its own property records and its own parcel viewer, so land near the line often means checking a parish and a county in two states.
Below you will find every parish and county on both sides of the line, who borders whom, and what changes when you cross from one records office to the other.
Louisiana–Texas border at a glance
- Parishes and counties on the line: 16 (7 parishes in Louisiana, 9 counties in Texas)
- With a verified public parcel viewer in our directory: 12 of 16
- Residents, 2023 estimates: about 567,012 on the Louisiana side and 515,505 on the Texas side
- Most populous on each side: Caddo Parish, LA (226,386) and Jefferson County, TX (251,496)
- Largest by land area: Vernon Parish, LA (1,327 sq mi) and Cass County, TX (937 sq mi)
Louisiana parishes on the line
| Parish | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Beauregard Parish | DeRidder | 1,157 | 36,827 | no verified public viewer listed yet |
| Caddo Parish | Shreveport | 879 | 226,386 | no verified public viewer listed yet |
| Calcasieu Parish | Lake Charles | 1,064 | 203,761 | parish web map |
| Cameron Parish | Cameron | 1,285 | 4,768 | no verified public viewer listed yet |
| De Soto Parish | Mansfield | 876 | 27,114 | ArcGIS Web AppBuilder |
| Sabine Parish | Many | 867 | 21,906 | no verified public viewer listed yet |
| Vernon Parish | Leesville | 1,327 | 46,250 | parish web map |
Texas counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Cass County | Linden | 937 | 28,659 | appraisal district map |
| Harrison County | Marshall | 900 | 70,895 | Prodigy CAD map |
| Jefferson County | Beaumont | 877 | 251,496 | ArcGIS Experience Builder |
| Marion County | Jefferson | 381 | 9,571 | appraisal district map |
| Newton County | Newton | 934 | 12,039 | appraisal district map |
| Orange County | Orange | 334 | 85,722 | appraisal district map |
| Panola County | Carthage | 811 | 22,838 | appraisal district map |
| Sabine County | Hemphill | 492 | 10,106 | Prodigy CAD map |
| Shelby County | Center | 796 | 24,179 | Prodigy CAD map |
Which parishes and counties face each other
Here is who borders whom across the line, based on the Census Bureau adjacency file:
- Beauregard Parish, LA borders Newton County, TX
- Caddo Parish, LA borders Cass County, TX, Harrison County, TX, Marion County, TX, Panola County, TX
- Calcasieu Parish, LA borders Newton County, TX, Orange County, TX
- Cameron Parish, LA borders Jefferson County, TX, Orange County, TX
- De Soto Parish, LA borders Panola County, TX, Shelby County, TX
- Sabine Parish, LA borders Newton County, TX, Sabine County, TX, Shelby County, TX
- Vernon Parish, LA borders Newton County, TX
What changes when you cross the line
- Different viewers. On the Louisiana side the official maps run on: no verified public viewer listed yet (4); parish web map (2); ArcGIS Web AppBuilder (1). On the Texas side: appraisal district map (5); Prodigy CAD map (3); ArcGIS Experience Builder (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 parish or county where the parcel sits. In Louisiana the parish clerk of court records deeds and the parish assessor keeps the tax rolls.
- Different rules. Zoning, septic permits and property tax are set locally and by each state, so check with the parish or county on the side where you plan to build or buy.
Researching a tract that crosses the line
- Find the parcel in both the parish and the county viewer. Each side will show only its own piece, with its own parcel number.
- Pull the recorded deed from each side's recording office (in Louisiana, the parish clerk of court), since each one records only the land inside its own boundary.
- Expect two tax bills, one from each side, 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 parish or county and links straight to its parcel viewer, plus FEMA flood, USGS elevation, USDA soil and wetland results.
Related guides
More: Louisiana parishes · Texas 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.