Geography of Lamar County
Covering 917 square miles, Lamar County combines a regional trade center at Paris with farm and ranch land in every direction. About 51,503 people live here.
It lies in the East Texas region at about 33.67° N, 95.57° W and is 116th in size among Texas's 254 counties. It is a border county, touching Oklahoma. Lamar County shares boundaries with 3 other Texas counties, and the closest major cities are Texarkana (about 89 miles away in a straight line) and Tyler (about 92 miles).
East Texas is the state's forested corner — the Piney Woods, red-clay hills, lakes and river bottoms that have more in common with the Deep South than with the open West. Timber, poultry, oil and gas, and growing retirement and lake communities shape its economy.
For a broader view of how Lamar County fits within the state, download our free Texas map with counties and cities PDF — a printable, high-resolution reference showing all 254 Texas counties labeled with their county seats.
Population & demographics
With approximately 51,503 residents across 917 square miles, Lamar County has a population density of about 56.2 people per square mile. Density here reflects a mix of small cities, suburbs, and rural land.
County seat: Paris
County government for Lamar County is based in Paris. The commissioners court, made up of a county judge and four precinct commissioners, meets here and sets the county budget, roads policy and tax rate. Paris also serves as the main shopping, school and healthcare center for much of the county.
History & name origin
Lamar County was established in 1840 and was named for Mirabeau Buonaparte Lamar, the third president of the Republic of Texas (1838–1842). It was carved from territory previously part of Red River County.
Lamar County, Texas — frequently asked questions
Quick answers about Lamar County geography, population, county seat, neighboring counties, and how to use the maps on this page. Figures are sourced from the U.S. Census Bureau; answers are written and reviewed by the Texas County Map team.
Where is Lamar County, Texas located?+
Lamar County is located in the East Texas region of Texas at approximately 33.667° N, 95.571° W. It is one of the 254 counties of Texas and carries U.S. Census FIPS code 48277. The interactive map on this page renders the official U.S. Census TIGER boundary for Lamar County over real-world OpenStreetMap, Esri satellite, and topographic basemaps.
How big is Lamar County in square miles?+
Lamar County covers approximately 917 square miles of land in the East Texas region — a mid-sized Texas county. By land area it ranks 116th out of 254 Texas counties. The full bounding box of the county is rendered to scale on the interactive map and matches the U.S. Census TIGER 2023 polygon.
What is the population of Lamar County, Texas?+
Lamar County has a population of approximately 51,503 residents. With 917 square miles of land, that works out to a population density of about 56.2 people per square mile, which is moderately populated for a Texas county. That makes Lamar County the 74th most populous of the 254 counties in Texas.
What is the county seat of Lamar County?+
Paris is the county seat of Lamar County, Texas, which was organized in 1840 and named for Mirabeau Buonaparte Lamar, the third president of the Republic of Texas (1838–1842). Lamar County was originally carved out of Red River County. County government offices, courthouses, and most public records for Lamar County are located in Paris.
Which Texas counties border Lamar County?+
Lamar County shares borders with Red River, Delta, and Fannin counties. These 3 neighboring counties are highlighted on the schematic boundary map and linked at the bottom of this page so you can quickly compare population, area, and county seats across the East Texas region.
Where can I download or print a map of Lamar County?+
Use the "Download PDF" button below the Lamar County map on this page to save a letter-size PDF of the county boundary, neighboring counties and incorporated places, drawn from U.S. Census Bureau 2023 boundary files. The "Official TxDOT road map" button downloads the Texas Department of Transportation county road mapbook for Lamar County. Both files are stored on this site and download directly. Our free Texas map with counties and cities PDF shows all 254 counties on one sheet.
What is the FIPS code for Lamar County, Texas?+
The full 5-digit U.S. Census FIPS code for Lamar County is 48277, made up of Texas state code 48 and the 3-digit county code 277. This is the same FIPS code used by the U.S. Census Bureau TIGER/Line files, the American Community Survey, and most federal datasets that key on county.