Texas County Map shows all the counties (and county seats) in Texas, the second-largest state in the US in terms of area and population. It is spread across a total area of 268,596 sq mi (695,662 sq km). This high-resolution Texas county map shows each county in a different color so that it becomes easier for you to locate. Texas has 254 counties, which is the largest number of counties in a single US state. The Texas County Map also shows the neighboring states, country (Mexico), and the Gulf of Mexico.