Atascosa County area

Population and density of Atascosa County

The Census Bureau estimates that 53,590 people lived in Atascosa County on July 1, 2025. That ranks #980 of 3,222 county equivalents nationally and #70 of 254 in Texas. Since the April 1, 2020 estimates base of 49,137, the population has grown by 4,453 (+9.1%), compared with +8.8% for Texas as a whole.

With 1,219.5 square miles of land, that is 44 people per square mile (17 per km²), placing Atascosa County #1,668 nationally for density and #88 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 15 acres of land per resident.

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 Atascosa County

6 incorporated places lie at least partly in Atascosa County. Together they are home to 23,858 people (44.5%); the other 29,732 (55.5%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Pleasanton city, with 11,511 residents in the county. The county seat, Jourdanton city, has 4,751 residents. Among places with at least 1,000 residents in 2020, Lytle city grew fastest since then (+22.3%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Atascosa County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Atascosa County is an outlying county of the San Antonio-New Braunfels, TX Metropolitan Statistical Area. Its 8 county equivalents have 2,813,140 residents on 7,313.3 square miles of land; Atascosa County accounts for 16.7% of the land and 1.9% of the residents. By combined land it ranks #24 of 393 metropolitan areas, and #24 by population. It belongs to the San Antonio-New Braunfels-Kerrville, TX Combined Statistical Area.

ZIP codes

16 ZIP Code Tabulation Areas have land in Atascosa County; 10 of them have most of their land inside the county, and the others mainly cover neighboring areas.

78005780087801178012780267805078052780627806478065780697807378113781147811878264

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 Atascosa County

Atascosa County shares a land border with 7 county equivalents. It has more land than 5 of them. The largest neighbor is Medina County (1,325.4 mi²) and the smallest is Karnes County (747.8 mi²). Together with its neighbors, Atascosa County forms a block of 8,649.8 mi² of land, of which it holds 14.1%.

How big is Atascosa County compared with U.S. states?

Atascosa County has more land than 1 of the 50 states. It is about 1.2 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.6 times as much land (1,948.6 mi²). Texas’s county land could hold about 214 areas the size of Atascosa County.

Another way to picture it: the same land area would fill a square about 34.9 miles (56.2 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 Atascosa County?

Atascosa County has more land than 2,718 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 Atascosa County at #583 nationally by total area, 79 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 0.2%, compared with a national county-equivalent median of 1.2% — 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 Atascosa County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

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.