Archer County
Aransas County (P-18) is on the Gulf Coast northeast of Corpus Christi. The county, divided into three parts by Copano, St. Charles, and Aransas bays, is bounded on the north and northwest by Refugio County, on the south by San Patricio and Nueces counties, and on the east by the Gulf of Mexico. The county seat and largest city is Rockport. Several highways cross the county, including State highways 35 and 361, and Farm roads 136, 881, 1781, 2040, 2165, 2725, and 3036. The county is also served by the Gulf Intracoastal Waterway.
Aransas County has an area of 276 square miles. The altitude ranges from sea level to fifty feet. The level land, part of the Coastal Prairie, is generally poorly drained. Dark, saline, loamy soils cover much of the inland terrain. Along the coastal areas are sandy beaches. In the northwest are loamy, acidic soils, with cracking, clayey subsoils. The Gulf marshes support cordgrasses, sedges, rushes, seashore saltgrass, march millet, and maiden cane. Further inland the native flora includes the tall grasses of the Gulf prairie and some hardwoods such as elms and oaks, which are found particularly along streambeds. Much of the northern portion of the county is in the Aransas National Wildlife Refuge. Between 11 and 20 percent of the land in the county is considered prime farmland.