
Starr County
- State:
- Texas
- County Seat:
- Rio Grande City
Starr County's estimated 2025 population is 66,496 with a growth rate of 0.42% in the past year according to the most recent United States census data. Starr County is the 56th largest county in Texas. The 2010 population was 61,140 and has seen a growth of 8.76% since that time.