Dallam County, Texas Map

Reading the Dallam County map

The outline on this map is Dallam County's legal boundary as published in the U.S. Census Bureau's TIGER/Line files. At 1,505 square miles, the county is roughly the size of a square 39 miles on each side — large enough that crossing it by car can take well over an hour. Where the border is a ruler-straight line, it was set by survey; where it wiggles, it usually follows a river, creek or old land grant.

The red marker shows Dalhart, the county seat, and the highlighted shapes in the schematic view are the bordering counties. Use the layer switcher to change between street, satellite and terrain backgrounds: satellite is best for seeing farmland and development patterns, while terrain shows hills, valleys and river corridors.

What surrounds Dallam County

Moving around the compass, Dallam County borders Hartley to the south; Sherman to the east. It also lies on the Texas state line, bordering New Mexico and Oklahoma.

For travel planning, the nearest large cities are Amarillo (~85 mi), Lubbock (~191 mi), Wichita Falls (~284 mi). Distances are straight-line from the county's center; driving distances are usually 15–30% longer depending on the road network.

Landscape of the West Texas

West Texas is a land of long horizons: rolling plains, mesas and desert grassland where cotton farms, cattle ranches and the oilfields of the Permian Basin are the main sources of work. Distances between towns are measured in hours, not minutes.

How to use or print this map

To keep a copy, use the Download PDF button below the map: it saves a letter-size PDF of Dallam County built from U.S. Census Bureau 2023 boundary files, showing neighboring counties and incorporated places. The Official TxDOT road map button downloads the Texas Department of Transportation county road mapbook. The Print map button opens a print-ready layout for paper printing. For a statewide view showing all 254 counties with their seats, use our free Texas map with counties and cities PDF.

Teachers often pair this map with the county's neighbors to practice cardinal directions, while genealogists use it to identify which neighboring courthouses may hold older records — many Texas counties were carved out of larger ones, and Dallam County itself was formed from Bexar County.