78664 Frequently Asked Questions

A: ZIP Code 78664 is Located in Round Rock Texas. Portions of 78664 are also in Pflugerville.

A: ZIP Code 78664 is Located Primarily in Williamson County Texas with Portions in Travis County.

A: The Current Sales Tax in ZIP Code 78664 is 8.2%

A: The Area Codes for 78664 are 512 and 737

A: 78664 is within by the Texas 17th Congressional District and the Texas 31st Congressional District.

A: 78664 is within Texas State House of Representatives District 46, Texas State House of Representatives District 52 and Texas State House of Representatives District 136.

A: 78664 is within Texas State Senate District 5 and Texas State Senate District 14.

A: The 2022 population of ZIP Code 78664 is 62168. The population growth rate in 78664 is -1.97%.

A: The majority race/ethnicity of people residing in 78664 is White (55.41%). The majority race/ethnicity of students attending public schools in 78664 is Hispanic(42.09%).

A: The median household income in 78664 is $80,403 (2021) and the average adjusted income is $65,880 (2020).