Population overview
Mason County is home to roughly 3,990 people, making up about 0.01% of the total population of Texas. Within the Central Texas region, it ranks #67 of 76 counties by population. The combination of 932 square miles of land and 3,990 residents yields a density of about 4.3 people per square mile — characteristic of rural and frontier Texas, with long distances between settlements and large stretches of working ranchland.
How Mason County compares
Compared with the other 253 Texas counties, Mason County sits in the bottom 25% of the population distribution. It belongs to the smaller end of Texas counties by population — typical of West Texas, the Panhandle, and the Trans-Pecos.
| Comparison | Population | vs Mason |
|---|---|---|
| Mason County | 3,990 | — |
| Central Texas region average | 81,016 | +1930% |
| Texas county median | 18,916 | +374% |
| Largest in Texas (Harris) | 5,045,026 | +126342% |
Neighboring county populations
Mason County shares borders with 6 counties. Comparing population across an adjacent corridor often reveals commuting patterns, school-district pull, and economic gravity.
| County | Seat | Population | Density |
|---|---|---|---|
| Gillespie County | Fredericksburg | 28,527 | 26.9 |
| Llano County | Llano | 23,353 | 25.0 |
| McCulloch County | Brady | 7,472 | 7.0 |
| San Saba County | San Saba | 5,787 | 5.1 |
| Kimble County | Junction | 4,438 | 3.5 |
| Menard County | Menard | 1,956 | 2.2 |
What the numbers mean
Mason County's density of about 4.3 people per square mile is about 4% of the Texas statewide average of roughly 121. Put another way, there are about 149 acres of land for every resident.
Below about six people per square mile, a county is often described as "frontier." Residents may live many miles from a hospital or full-service grocery, and county government is a small operation where a few officials wear many hats.
Mason County in statewide context
By population the county ranks 208th of 254; by land area it ranks 97th; and by density it ranks 203rd. It has far more land than people compared with most Texas counties.
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. Mason County belongs to that large group of smaller counties.
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 Mason County, Texas?+
Mason County has an estimated population of 3,990 residents, based on the most recent U.S. Census data.
What is the population density of Mason County?+
Mason County has a population density of approximately 4.3 people per square mile across its 932 sq mi of land area — characteristic of a rural county.
Where does Mason County rank among Texas counties by population?+
Mason County ranks #208 out of 254 Texas counties by total population, accounting for roughly 0.01% of the state's total population.
What is the most populous county near Mason County?+
Among the 6 counties bordering Mason, Gillespie County is the most populous with about 28,527 residents.
How is Mason 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.