78665 Frequently Asked Questions

A: ZIP Code 78665 is Located in Round Rock Texas. Portions of 78665 are also in Georgetown.

A: ZIP Code 78665 is Located Entirely in Williamson County Texas.

A: The Current Sales Tax in ZIP Code 78665 is 8.2%

A: The Area Codes for 78665 are 512 and 737

A: 78665 is within by the Texas 31st Congressional District and the Texas 17th Congressional District.

A: 78665 is within Texas State House of Representatives District 52 and Texas State House of Representatives District 136.

A: ZIP Code 78665 is in Texas State Senate District 5.

A: The 2022 population of ZIP Code 78665 is 61640. The population growth rate in 78665 is 0.00%. The population density of 78665 is 2,773.

A: The majority race/ethnicity of people residing in 78665 is White (59.00%). The majority race/ethnicity of students attending public schools in 78665 is White(37.39%).

A: The median household income in 78665 is $105,407 (2021) and the average adjusted income is $379,660 (2021).