October 2021 population estimate: 123,497

The Planning and Development Services Department generates monthly population estimates and future population projections based on recent development activity. The population estimate is updated monthly to reflect completed single-family units, and completed multifamily units are added twice a year in October and April. Projections are adjusted every ten years as decennial Census figures are released.

  • As of October 2021, Round Rock’s estimated population is 124,034 (within the city limits).

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