Population overview
Starr County is home to roughly 66,319 people, making up about 0.21% of the total population of Texas. Within the South Texas region, it ranks #5 of 26 counties by population. The combination of 1,223 square miles of land and 66,319 residents yields a density of about 54.2 people per square mile — characteristic of small-town and exurban Texas, where towns are anchored by a county seat surrounded by working farmland and ranches.
How Starr County compares
Compared with the other 253 Texas counties, Starr County sits in the top 25% of the population distribution. It represents the broad middle of Texas — small to mid-sized counties with a clear county seat and a regionally rooted economy.
| Comparison | Population | vs Starr |
|---|---|---|
| Starr County | 66,319 | — |
| South Texas region average | 157,697 | +138% |
| Texas county median | 18,916 | -71% |
| Largest in Texas (Harris) | 5,045,026 | +7507% |
Neighboring county populations
Starr County shares borders with 4 counties. Comparing population across an adjacent corridor often reveals commuting patterns, school-district pull, and economic gravity.
| County | Seat | Population | Density |
|---|---|---|---|
| Hidalgo County | Edinburg | 921,549 | 587.3 |
| Zapata County | Zapata | 13,753 | 13.8 |
| Brooks County | Falfurrias | 6,579 | 7.0 |
| Jim Hogg County | Hebbronville | 4,555 | 4.0 |
What the numbers mean
Starr County's density of about 54.2 people per square mile is about 45% of the Texas statewide average of roughly 121. Put another way, there are about 12 acres of land for every resident.
At this density the county is anchored by one or two real towns, with farms and ranches between them. Hospitals, school districts and retail tend to concentrate in Rio Grande City, which draws shoppers and workers from surrounding rural areas.
Starr County in statewide context
By population the county ranks 56th of 254; by land area it ranks 40th; and by density it ranks 74th. Its population and land area rank fairly close together, a balanced profile for Texas.
Texas's population is extremely concentrated: the ten largest counties hold well over half of all Texans, while more than 150 counties have fewer than 30,000 residents. Starr County sits in the middle ground between the big metros and the rural majority.
About the data
Population figures on this page come from the U.S. Census Bureau. The decennial census provides the official count every ten years, and the Bureau's annual Population Estimates Program updates county totals between censuses. Land area comes from the Census Gazetteer and excludes water. Figures are rounded and may differ slightly from county or school district estimates that use other methods. See our methodology page for details.
Frequently asked questions
What is the population of Starr County, Texas?+
Starr County has an estimated population of 66,319 residents, based on the most recent U.S. Census data.
What is the population density of Starr County?+
Starr County has a population density of approximately 54.2 people per square mile across its 1,223 sq mi of land area — characteristic of a small-town / exurban county.
Where does Starr County rank among Texas counties by population?+
Starr County ranks #56 out of 254 Texas counties by total population, accounting for roughly 0.21% of the state's total population.
What is the most populous county near Starr County?+
Among the 4 counties bordering Starr, Hidalgo County is the most populous with about 921,549 residents.
How is Starr County's population measured?+
Population figures are sourced from the U.S. Census Bureau — the decennial census and annual American Community Survey (ACS) population estimates. See our methodology for full sourcing.