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U.S. ZIP Code 78664
5-digit United States postal code #78664, Round Rock, TX
ZIP code 78664 is located in the city (place name) Round Rock, сounty Williamson in the state of Texas. The population in ZIP code 78664 is 52932 and the population density is 1232.9. ZIP code 78664 refers to сounty Williamson having сounty FIPS 48491, the ratio of people from different counties in this ZIP code is as follows: all county weights - 48453: 11.5%, 48491: 88.5%. In the area of the ZIP code 78664 valid time zone America/Chicago.
ZIP: 78664
County: Williamson
Place Name: Round Rock
State: Texas
State Abbreviation: TX
Coordinates: 30° 30' 17.172" N, 97° 38' 44.916" W
Latitude: 30.504770000000
Longitude: -97.645810000000
Population: 52932
Density: 1232.9/km2
Time zone: America/Chicago
County FIPS: 48491
All county weights: 48453: 11.5%, 48491: 88.5%