City-generated population estimates
The Planning and Development Services Department generates monthly population estimates based on housing units, occupancy, and household size using the most recent Decennial Census as a baseline.
- As of January 2025, Round Rock’s estimated population is 137,884 (within the city limits).
| 2025 | 2024 | 2023 | 2022 | 2021 | |
| January* | 137,884 | 131,780 | 128,065 | 124,256 | 122,557 |
| February | 132,057 | 128,193 | 124,285 | 122,586 | |
| March | 132,359 | 128,356 | 124,361 | 122,625 | |
| April* | 132,927 | 128,957 | 124,614 | 122,827 | |
| May | 133,142 | 129,141 | 124,690 | 122,898 | |
| June | 133,335 | 129,247 | 124,756 | 122,930 | |
| July* | 134,411 | 130,293 | 125,076 | 123,391 | |
| August | 134,663 | 130,516 | 125,182 | 123,443 | |
| September | 134,858 | 130,662 | 125,323 | 123,497 | |
| October | 136,105 | 130,938 | 125,772 | 124,034 | |
| November | 136,392 | 131,052 | 125,943 | 124,086 | |
| December | 136,585 | 131,235 | 126,205 | 124,128 |
*Estimates reflecting newly completed single-family units are added monthly. Estimates reflecting newly completed multifamily units are added quarterly in January, April, July, and October.
Updated city estimates: Upon release of the official April 1, 2020 Census population, the city recalculated its population estimates for April 2020-August 2021 using the 2020 Census figure as a baseline. Previous estimates for those dates had been based on the 2010 Census because the 2020 Census had not yet been released.
City-generated population projections
The Planning and Development Services Department develops 20-year population projections into the future using the most recent Census as a baseline.
A breakdown of projected population by year with methodology and assumptions is outlined in the population projections report.
- 2020-2040 Population Projections (pdf) revised 4/1/24
- 2020-2040 Population Projections Report (pdf) released 8/23/22
US Census Bureau
American Community Survey (ACS)
The US Census Bureau also collects a wealth of demographic information annually through the American Community Survey (ACS). Surveys are sent to only a sampling of households, so ACS data are estimates, not 100% counts. This allows responses to be processed and reported much more quickly than the decennial Census. Surveys are administered annually and reported both for each year and combined as 5-year estimates.
- American Community Survey (ACS) website
- About the ACS
- Quick Facts: City of Round Rock, Texas (from the 2016-2020 5-year ACS)
Note on the 2020 ACS: Release of the 2020 ACS data was delayed due to difficulties resulting from Covid-19 and has been published as the 2020 ACS 1-Year Experimental Data Release. As of July 2022 the data has not been reported for geographies smaller than states.
The 2021 1-year ACS is scheduled to be released September 15, 2022 and the 2017-2021 5-year ACS on December 8, 2022.
2020 Census
On August 12, 2021, the US Census Bureau released redistricting data files to states, which included the 2020 population count. According to the Census, as of April 1, 2020 Round Rock’s population was 119,468 (within the city limits).
- 2020 Census Release Report (pdf) 10/1/21
This report provides 2020 Census data compared to 2010 Census data for Round Rock. The Census establishes a baseline for the city’s population estimates and projections.
Data highlights from 2020 Census release
Historical Census figures since 1850
Source: US Census Bureau; figures refer to April 1 of the Census year
Economic Census and Survey
The Bureau also collects the Economic Census every five years (those ending in ’02 and ’07), and an annual Economic Survey. The economic census provides a detailed portrait of the United States’ economy once every five years, from the national to the local level. There also are several related programs, including statistics on minority- and women-owned businesses. The Census of Governments is conducted at the same time. The Census of Agriculture is now conducted by the US Department of Agriculture.
Census Bureau links
- U.S. Bureau of the Census (main)
- Explore Census Data
- American Community Survey
- Economic Census
- Educational Resources – Statistics in Schools
- Genealogy information (note: for privacy reasons, Census information about individuals is not available to the public for 72 years; the most recent Census currently available is from 1950)
- Census History
Chamber of Commerce
The city’s Economic Development partnership with the Round Rock Chamber of Commerce compiles additional demographic information from a variety of sources.
For more information, contact Joelle Jordan at 512-218-5422.
