Round Rock, Texas

Round Rock: The fourth most populous city in Williamson County, Texas. It is located in the northern part of the county. Round Rock is known for its many parks and green spaces, its many historical sites, and its many attractions, such as the Round Rock Express stadium and the Round Rock Public Library.


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 10 years in 2020 city had an estimated population of 137,575 inhabitants.

The city was created 173 years ago in 1850.

Round Rock was established as a frontier settlement along Brushy Creek in the mid-1800s. The city is named after a large round rock in the creek bed that served as a convenient low-water crossing.

Round Rock grew as a commercial hub for area cotton and cattle operations. Its population surged in the late 20th century with Austin's tech boom. Affordable housing and land drew middle class families and businesses to Round Rock, shaping its suburban identity.

Key Facts About Modern Round Rock

Here are some key details about Round Rock today:

  • Population: Around 133,000 residents, making it the 15th largest city in Texas.
  • Economy: Major employers include Dell Technologies, Sears Teleserv, Emerson Process Management, and Texas State University's Round Rock Campus.
  • Neighborhoods: Notable communities include Downtown, Clay Madsen Historic District, Paloma Lake, and Fern Bluff. Round Rock has diverse housing options from urban condos to gated neighborhoods.
  • Parks and Recreation: Round Rock has over 3,100 acres of parks with trails, sports fields, Old Settlers Park, and the Round Rock Express minor league baseball team.
  • Attractions: Popular sites include the Dell Diamond baseball stadium, Kalahari Resorts indoor waterpark, the Public Library, and the Round Rock Premium Outlets mall.

With strong economic and population growth, Round Rock has developed into a family-friendly city that retains ties to its historical roots.

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

Quick Facts about Round Rock

Population : 137,575 (2020)
Country : United States of America
State : Texas (United States)
County : Williamson County
Twitter username : roundrock
Postal code : 78680–78683, 78665, 78664
Phone Area Codes : 512
Area : 92.9 km2
Altitude : 735 feet / 224 meters
Establishment : January 01, 1851 (173 years ago)
Time Zone : UTC−06:00
Local time : 04:47:59 (13th June 2024)
Density : 1,481 Pop. per km² as of 2020
Population growth : 27.39% (2010-2020)
Dell diamond 4DM image
Dell diamond 4DM
Dell diamond 4DM image


Round Rock is located at 30°30'30"N 97°40'44"W (30.5082600, -97.6789000).

Round Rock map


The population of Round Rock increased by 27.39% in 10 years.

Year Population % Change Method
2010 99,887 - census
2011 103,864 3.83% estimation process
2012 106,504 2.48% estimation process
2013 109,547 2.78% estimation process
2014 112,665 2.77% estimation process
2015 115,981 2.86% estimation process
2016 120,864 4.04% estimation process
2017 123,684 2.28% estimation process
2018 128,849 4.01% estimation process
2019 133,372 3.39% estimation process
2020 137,575 3.06% estimation process

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

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People born in Round Rock (13)

People born in Round Rock, including entertainer Barbette, activist Juanita Craft, football player; Quarterback Stephen McGee, .


  • Ryan Goins (American professional baseball player) he was born in 13/02/1988
  • Jessica Meuse (American singer-songwriter) she was born in 19/10/1990
  • Leone Cruz (Footballer) he was born in 13/06/1987
  • Bailey Webster (American volleyball player) she was born in 21/07/1991
  • Tyler Patmon (American football player) he was born in 26/01/1991
  • Jarrett Allen (American basketball player) he was born in 21/04/1998
  • Kameron Kelly (American football cornerback) he was born in 19/08/1996
  • Brett Baty (American baseball player) he was born in 13/11/1999
  • Jordan Moore (American basketball player) she was born in 28/11/1996
  • Bert Johnson (American baseball player) he was born in 04/11/1905

Schools in Round Rock

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

Post offices near Round Rock

Post Office Name City ZIP
Round Rock W Post Office Round Rock (TX) 78681
Round Rock Post Office Round Rock (TX) 78664
Mc Neil Post Office Mc Neil (TX) 78651
Pflugervill Post Office Pflugerville (TX) 78660
Balcon Post Office Austin (TX) 78759

Other cities in Williamson County

Cities, towns, neighborhoods & other populated places in Williamson County , TX. (more)

City Name Population Title
Georgetown 85,538 The most populous city in Williamson County, Texas.
Cedar Park 81,040 The second most populous city in Williamson County, Texas.
Leander 70,519 The fifth most populous city in Williamson County, Texas.
Hutto 29,987 City in Williamson County, Texas, United States
Brushy Creek 21,764 Census designated place
Taylor 17,921 City in Texas, United States
Jollyville 16,151 Census designated place
Anderson Mill 8,744 Census designated place
Jarrell 2,077 City in Williamson County, Texas, United States
Bartlett 1,766 City in Texas
Serenada 1,641 Census designated place
Granger 1,514 City in Williamson County, Texas, United States
Liberty Hill 1,389 City in Williamson County, Texas, United States
Florence 1,304 City in Texas, United States
Thrall 1,014 City in Texas
Coupland 318 Location in Texas, USA

Distance to Other Cities

Round Rock distances to largest Texas cities