Texas’s Austin metro area is where zip code 78681 is situated. Williamson County is the main location of zip code 78681. Round Rock, Texas is the designated designation for 78681 by the US Postal Service. Several cities in Texas, including Round Rock, Brushy Creek, Austin, Jollyville, and Cedar Park, contain or border portions of zip code 78681. In comparison to other zip codes in Texas, the socioeconomic classification for zip code 78681, which has the area code 512, is Middle Class.
Currently, there are 2.7% of people unemployed in 78681, which is lower than the 3.6% county unemployment rate, 4.2% state unemployment rate, and 2.7% local unemployment rate.

According the 2010 US Census, the population of 78681 increased to 50606 from 31958 over the past 10 years. The majority ethnicity residing in 78681 is White while the majority ethnicity attending 78681 public schools is White. 19.4% of students in 78681 public schools receive or are eligible to participate in free or reduced lunch programs.