Onion Creek is a neighborhood in Austin, Texas, United States.
Onion Creek is also the name of a creek that starts in Hays County and empties into the Colorado River.
Geography
Onion Creek is located 10 miles (16 km) south of downtown Austin.
According to the United States Census Bureau, the CDP has a total area of 3.2 square miles (8.3 km<sup>2</sup>), all of it land.
Demographics
Onion Creek first appeared as a census-designated place in the 1990 U.S. census.
!% 2000
|-
|White alone (NH)
|1,848
|87.33%
|-
|Black or African American alone (NH)
|23
|1.03%
|-
|Native American or Alaska Native alone (NH)
|5
|0.24%
|-
|Asian alone (NH)
|23
|1.09%
|-
|Pacific Islander alone (NH)
|0
|0.00%
|-
|Other race alone (NH)
|2
|0.09%
|-
|Mixed race or Multiracial (NH)
|22
|1.04%
|-
|Hispanic or Latino (any race)
|193
|9.12%
|-
|Total
|2,116
|100.00%
|}
As of the census