Geography of Delta County
Delta County is a rural county of 277 square miles and about 5,549 residents, where farms and ranches fill most of the space between Cooper and its smaller communities.
It lies in the East Texas region at about 33.39° N, 95.67° W and is one of the 25 smallest counties in Texas (247th of 254 by area). Delta County shares boundaries with 6 other Texas counties, and the closest major cities are Tyler (about 75 miles away in a straight line) and Dallas (about 78 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 Delta 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 5,549 residents across 277 square miles, Delta County has a population density of about 20.0 people per square mile. Like much of West and South Texas, the county is sparsely populated, with wide-open country between settlements.
County seat: Cooper
County government for Delta County is based in Cooper. 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. For many residents, a trip to Cooper combines county business with groceries, school events and church.
History & name origin
Delta County was established in 1870 and was named for Its triangular shape, much like the Greek letter Delta. It was carved from territory previously part of Hopkins County and Lamar County.
Delta County, Texas — frequently asked questions
Quick answers about Delta 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 Delta County, Texas located?+
Delta County is located in the East Texas region of Texas at approximately 33.386° N, 95.672° W. It is one of the 254 counties of Texas and carries U.S. Census FIPS code 48119. The interactive map on this page renders the official U.S. Census TIGER boundary for Delta County over real-world OpenStreetMap, Esri satellite, and topographic basemaps.
How big is Delta County in square miles?+
Delta County covers approximately 277 square miles of land in the East Texas region — a compact county by Texas standards. By land area it ranks 247th 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 Delta County, Texas?+
Delta County has a population of approximately 5,549 residents. With 277 square miles of land, that works out to a population density of about 20.0 people per square mile, which is rural for a Texas county. That makes Delta County the 194th most populous of the 254 counties in Texas.
What is the county seat of Delta County?+
Cooper is the county seat of Delta County, Texas, which was organized in 1870 and named for Its triangular shape, much like the Greek letter Delta. Delta County was originally carved out of Hopkins County and Lamar County. County government offices, courthouses, and most public records for Delta County are located in Cooper.
Which Texas counties border Delta County?+
Delta County shares borders with Hopkins, Lamar, Hunt, Red River, Fannin, and Franklin counties. These 6 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 Delta County?+
Use the "Download PDF" button below the Delta 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 Delta 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 Delta County, Texas?+
The full 5-digit U.S. Census FIPS code for Delta County is 48119, made up of Texas state code 48 and the 3-digit county code 119. 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.