County outline
Where Glasscock County is located
Area breakdown
Land accounts for 99.9% of Glasscock County’s measured area and water for 0.1%. Its combined area converts to 2,333.8 square kilometers or approximately 576,694 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 900.218 | 2,331.554 | 576,139.5 |
| Water | 0.867 | 2.246 | 554.9 |
| Total | 901.085 | 2,333.799 | 576,694.4 |
How Glasscock County compares
By original Census land area, Glasscock County ranks #145 of 254 in Texas and #852 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.991 times the Texas county-equivalent median of 908.7 square miles. It accounts for 0.3% of the combined county land area in the state.
See the complete Texas ranking · What counts as a county equivalent?
Population and density of Glasscock County
The Census Bureau estimates that 1,128 people lived in Glasscock County on July 1, 2025. That ranks #3,180 of 3,222 county equivalents nationally and #244 of 254 in Texas. Since the April 1, 2020 estimates base of 1,115, the population has grown by 13 (+1.2%), compared with +8.8% for Texas as a whole.
With 900.2 square miles of land, that is 1.3 people per square mile (0.48 per km²), placing Glasscock County #3,124 nationally for density and #239 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 511 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 1,117 | 1,136 | 1,143 | 1,155 | 1,145 | 1,128 |
| Change | — | +19 | +7 | +12 | −10 | −17 |
U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.
Cities and towns in Glasscock County
Glasscock County has no incorporated cities, towns or villages. All 1,128 of its residents live in unincorporated communities, which the Census Bureau describes as census-designated places rather than municipalities.
Metropolitan area
Glasscock County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.
ZIP codes
4 ZIP Code Tabulation Areas have land in Glasscock County; 1 of them have most of their land inside the county, and the others mainly cover neighboring areas.
79706797207973979782
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering Glasscock County
Glasscock County shares a land border with 5 county equivalents. Each of them has more land than Glasscock County. The largest neighbor is Reagan County (1,175.3 mi²) and the smallest is Midland County (900.4 mi²). Together with its neighbors, Glasscock County forms a block of 5,715.1 mi² of land, of which it holds 15.8%.
| Bordering county equivalent | Land mi² | Size vs. Glasscock | Compare |
|---|---|---|---|
| Reagan County | 1,175.3 | 1.3× larger | Compare |
| Sterling County | 923.4 | about the same | Compare |
| Martin County | 915 | about the same | Compare |
| Howard County | 900.8 | about the same | Compare |
| Midland County | 900.4 | about the same | Compare |
How big is Glasscock County compared with U.S. states?
Glasscock County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.1 times as much. Texas’s county land could hold about 290 areas the size of Glasscock County.
Another way to picture it: the same land area would fill a square about 30 miles (48.3 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.
State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.
What stands out about Glasscock County?
Glasscock County has more land than 2,370 of the other 3,221 county equivalents in the dataset.
A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.
Does including water change its rank?
Using land plus water places Glasscock County at #969 nationally by total area, 117 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 0.1%, compared with a national county-equivalent median of 1.2% — 1.1 percentage points lower. This describes the statistical geography’s land/water mix, not flood exposure or developable land.
Closest positions in the national land ranking
These entries sit immediately beside Glasscock County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #851 | Dawson County, Texas | 900.3 | Compare |
| #852 | Glasscock County, Texas | 900.2 | This county |
| #853 | Crosby County, Texas | 900.2 | Compare |
Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.
Representative coordinates
The Census internal point is 31.868006, -101.521494. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 2,331,552,995 m²; AWATER: 2,245,302 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Glasscock County?
Glasscock County, Texas has 900.2 square miles (2,331.6 km²) of land and 0.867 square miles of water, for a total area of 901.1 square miles. It ranks #852 of 3,222 U.S. county equivalents by land area.
Is Glasscock County the largest county in Texas?
No. Glasscock County ranks #145 of 254 in Texas by land area. The largest is Brewster County, with 6,183.8 square miles of land.
What counties border Glasscock County?
Glasscock County shares a land border with Midland County, Sterling County, Reagan County, Howard County, and Martin County.
What is the population of Glasscock County?
The Census Bureau estimates Glasscock County had 1,128 residents on July 1, 2025, ranking #3,180 of 3,222 county equivalents. That is 1.3 people per square mile of land.
What is the county seat of Glasscock County?
The county seat of Glasscock County is Garden City.
Is Glasscock County part of a metropolitan area?
No. Glasscock County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Glasscock County?
4 ZIP Code Tabulation Areas have land in Glasscock County, and 1 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Glasscock County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.1 times as much land.
How many acres of land are in Glasscock County?
The land measurement converts to approximately 576,140 acres. Including water, total area is approximately 576,694 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.