| Place Name | Lost Creek |
| Place Type | Census Designated Place |
| ZIP Code(s) | 78735 78746 |
| County | Travis County |
| Area Code(s) | 512,737 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 4,651 |
| Majority Ethnicity | White 73.29% |
| Metro/Micro Stats Area | Austin-Round Rock-Georgetown, TX |
| US Congressional District(s) | Texas 21st |
| State House Districts | 47 |
| State Senate Districts | 14 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 73.29% |
| African American | 4.49% |
| Hispanic | 0% |
| Asian | 7% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 15.22% |