Walker County is located in the east-central part of the U.S. state of Texas. Its geographic coordinates are approximately 30°44′N latitude and 95°34′W longitude. The county seat and largest city is Huntsville. Walker County covers a total area of about 802 square miles, mostly land with a small percentage of water. It is part of the Huntsville Micropolitan Statistical Area, which is included in the larger Houston-The Woodlands Combined Statistical Area
. Adjacent counties to Walker County include Houston County to the north, Trinity County to the northeast, San Jacinto County to the east, Montgomery County to the south, Grimes County to the west, and Madison County to the northwest
. In summary, Walker County is situated in east-central Texas, with Huntsville as its central city and administrative seat
