'Round Rock, TX' definitions:

Round Rock, TX -- U.S. city in Texas

From: Gazetteer 2000
Name :
Round Rock, TX -- U.S. city in Texas
Population (2000) :
61136
Housing Units (2000) :
21766
Land area (2000) :
26.136941 sq. miles (67.694364 sq. km)
Water area (2000) :
0.127227 sq. miles (0.329516 sq. km)
Total area (2000) :
26.264168 sq. miles (68.023880 sq. km)
FIPS code :
63500
Located within :
Texas (TX), FIPS 48
Location :
30.514865 N, 97.672561 W
ZIP Codes (1990) :
78664 78681
Note :
some ZIP codes may be omitted esp. for suburbs.