'Austin County, TX' definitions:

Austin -- U.S. County in Texas

From: Gazetteer 2000
Name :
Austin -- U.S. County in Texas
Population (2000) :
23590
Housing Units (2000) :
10205
Land area (2000) :
652.593241 sq. miles (1690.208664 sq. km)
Water area (2000) :
3.781611 sq. miles (9.794326 sq. km)
Total area (2000) :
656.374852 sq. miles (1700.002990 sq. km)
Located within :
Texas (TX), FIPS 48
Location :
29.853909 N, 96.239441 W