Round Rock , Williamson County, Texas

Round Rock ity in Texas, United States of America

Round Rock, TX locator map
Location of Round Rock, TX on Texas map.


Round Rock is a city located in the county of Williamson in the U.S. state of Texas. Its population at the 2010 census was 99,887 and a population density of 1,075 people per km². After 9 years in 2019 city had an estimated population of 133,372 inhabitants.

The city was created 170 years ago in 1850.

Round Rock has a total area of 35.87 square miles (92.9 km2).

Round Rock map

Round Rock, TX Quick Facts

Population : 133,372 (2019)
Country : United States of America
State : Texas
County : Williamson County
Twitter username : roundrock
Postal code : 78680–78683
Phone Area Codes : 512
Area : 92.9 km2
Altitude : 735 feet / 224 meters
Establishment : January 01, 1851 (170 years ago)
Time Zone : UTC−06:00
Local time : 03:29:08 (19th April 2021)
Density : 1,436 Pop. per km² as of 2019
Population growth : 25.11% (2010-2019)

The population of Round Rock increased by 25.11% in 9 years.

Year Population Method
2010 99,887 census
2011 103,864 estimation process
2012 106,504 estimation process
2013 109,547 estimation process
2014 112,665 estimation process
2015 115,981 estimation process
2016 120,864 estimation process
2017 123,684 estimation process
2018 128,849 estimation process
2019 133,372 estimation process

Round Rock, TX zip code is 78664. County name: Williamson, County fips: 48491

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People born in Round Rock, TX (14)

People born in Round Rock, TX, including entertainer Barbette, activist Juanita Craft, football player; Quarterback Stephen McGee, you can see a list of people who born in Round Rock, TX.


College & universities near Round Rock, TX

Code Name City ZIP
246460 Central Texas Beauty College-Round Rock Round Rock (TX) 78664-4604
451820 The Art Institute of Austin Austin (TX) 78728
480073 South University-Austin Round Rock (TX) 78681-2300
451875 National American University-Austin Austin (TX) 78727-1208
490425 Ann Webb Skin Institute Austin (TX) 78759-3936

Stations (7)

Amtrak & bus stations near Round Rock, TX

Code Name Address Type
TAY Taylor 118 East First St. RAIL
AUS Austin 250 North Lamar Blvd. RAIL
KIL Killeen, Texas 200 East Avenue C BUS
FHD Fort Hood, Texas Hood Road & Old Ironsides Ave. BUS
TPL Temple 315 West Ave B RAIL

Other cities in Williamson County

Cities, Towns, Neighborhoods & Other Populated Places in Williamson County , TX.

City Name Population Title
Georgetown 79,604 City in Texas
Cedar Park 79,462 City in Williamson County, Texas, United States
Leander 62,608 City in Williamson County, Texas, United States
Hutto 27,947 City in Williamson County, Texas, United States
Taylor 17,383 City in Texas, United States
Jarrell 1,832 City in Williamson County, Texas, United States
Bartlett 1,758 City in Texas
Granger 1,505 City in Williamson County, Texas, United States
Florence 1,274 City in Texas, United States
Thrall 977 City in Texas
Coupland 317 Location in Texas, USA

Distance to Other Cities

Round Rock, TX distances to biggest Texas cities

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