Geography of Lamar County
Lamar County sits at roughly 33.67° N and 95.57° W in the East Texas region of Texas, spanning 917 square miles of terrain that includes the landscape characteristic of the area — from open ranchland and farmland to small-town main streets. The county's centroid is near Paris, and the county shares boundaries with 3 neighboring counties.
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
Paris serves as the seat of government for Lamar County. The county courthouse, commissioners court, district clerk, and primary public records are located here. As with all 254 Texas counties, the county seat is the anchor of civic life and the principal address for elections, permits, and court filings.
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. Every answer is generated from the official U.S. Census data backing this site.
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?+
A free, print-ready PDF map of Lamar County is available from the "Download PDF" button at the top of this page. The printable layout uses authentic U.S. Census TIGER boundary geometry for Lamar County, includes a Texas locator inset, and is sized for standard 8.5" × 11" Letter paper. For interactive use, the live Leaflet map on this page supports OpenStreetMap, Esri satellite, Esri topographic, and Carto light basemaps with zoom, scale bar, and fullscreen.
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.