Duval County, Texas Map

Reading the Duval County map

The outline on this map is Duval County's legal boundary as published in the U.S. Census Bureau's TIGER/Line files. At 1,793 square miles, the county is roughly the size of a square 42 miles on each side — large enough that crossing it by car can take well over an hour. Texas county lines are a mix of surveyed straight lines and natural features — compare the edges of this map to see which ones follow water.

The red marker shows San Diego, 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 Duval County

Moving around the compass, Duval County borders McMullen to the north; Jim Hogg and Brooks to the south; Jim Wells to the east; Live Oak to the northeast; Webb to the west.

For travel planning, the nearest large cities are Laredo (~62 mi), Corpus Christi (~68 mi), McAllen (~104 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 South Texas

South Texas covers the brush country, the Rio Grande Valley and the ranchlands south of San Antonio. Its culture is strongly shaped by its Tejano heritage and its ties to Mexico, and its economy blends citrus and vegetable farming, ranching, trade and energy.

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 Duval 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 Duval County itself was formed from Live Oak County, Nueces County and Starr County.