Irion County area

Population and density of Irion County

The Census Bureau estimates that 1,463 people lived in Irion County on July 1, 2025. That ranks #3,160 of 3,222 county equivalents nationally and #239 of 254 in Texas. Since the April 1, 2020 estimates base of 1,508, the population has declined by 45 (−3%), compared with +8.8% for Texas as a whole.

With 1,051.5 square miles of land, that is 1.4 people per square mile (0.54 per km²), placing Irion County #3,114 nationally for density and #236 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 460 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 Irion County

1 incorporated place lies at least partly in Irion County. Together they are home to 726 people (49.6%); the other 737 (50.4%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Mertzon city, with 726 residents in the county.

Metropolitan area

Irion County is an outlying county of the San Angelo, TX Metropolitan Statistical Area. Its 2 county equivalents have 122,065 residents on 2,573.9 square miles of land; Irion County accounts for 40.9% of the land and 1.2% of the residents. By combined land it ranks #129 of 393 metropolitan areas, and #335 by population.

ZIP codes

4 ZIP Code Tabulation Areas have land in Irion County; 2 of them have most of their land inside the county, and the others mainly cover neighboring areas.

76901769047693076941

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 Irion County

Irion County shares a land border with 4 county equivalents. Each of them has more land than Irion County. The largest neighbor is Crockett County (2,807.3 mi²) and the smallest is Reagan County (1,175.3 mi²). Together with its neighbors, Irion County forms a block of 7,867.1 mi² of land, of which it holds 13.4%.

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

Irion County has more land than 1 of the 50 states. It is about 1 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.9 times as much land (1,948.6 mi²). Texas’s county land could hold about 248 areas the size of Irion County.

Another way to picture it: the same land area would fill a square about 32.4 miles (52.2 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 Irion County?

Irion County has more land than 2,600 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 Irion County at #719 nationally by total area, 97 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%, compared with a national county-equivalent median of 1.2% — 1.2 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 Irion 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.