County outline
Where Collingsworth County is located
Area breakdown
Land accounts for 99.9% of Collingsworth County’s measured area and water for 0.1%. Its combined area converts to 2,381 square kilometers or approximately 588,365 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 918.441 | 2,378.751 | 587,802.2 |
| Water | 0.88 | 2.279 | 563.2 |
| Total | 919.321 | 2,381.03 | 588,365.4 |
How Collingsworth County compares
By original Census land area, Collingsworth County ranks #111 of 254 in Texas and #799 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.011 times the Texas county-equivalent median of 908.7 square miles. It accounts for 0.4% of the combined county land area in the state.
See the complete Texas ranking · What counts as a county equivalent?
Population and density of Collingsworth County
The Census Bureau estimates that 2,487 people lived in Collingsworth County on July 1, 2025. That ranks #3,073 of 3,222 county equivalents nationally and #229 of 254 in Texas. Since the April 1, 2020 estimates base of 2,652, the population has declined by 165 (−6.2%), compared with +8.8% for Texas as a whole.
With 918.4 square miles of land, that is 2.7 people per square mile (1 per km²), placing Collingsworth County #3,010 nationally for density and #221 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 236 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 2,642 | 2,609 | 2,585 | 2,545 | 2,567 | 2,487 |
| Change | — | −33 | −24 | −40 | +22 | −80 |
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 Collingsworth County
2 incorporated places lie at least partly in Collingsworth County. Together they are home to 1,859 people (74.7%); the other 628 (25.3%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Wellington city, with 1,770 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Wellington cityCounty seat | 1,770 | −6.5% | 1.379 |
| Dodson town | 89 | −5.3% | 0.61 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Collingsworth County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Collingsworth 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
6 ZIP Code Tabulation Areas have land in Collingsworth County; 2 of them have most of their land inside the county, and the others mainly cover neighboring areas.
790577907979095792307924579251
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 Collingsworth County
Collingsworth County shares a land border with 6 county equivalents, including 2 in Oklahoma. It has more land than 5 of them. The largest neighbor is Donley County (927 mi²) and the smallest is Harmon County (537.3 mi²). Together with its neighbors, Collingsworth County forms a block of 5,778.9 mi² of land, of which it holds 15.9%.
| Bordering county equivalent | Land mi² | Size vs. Collingsworth | Compare |
|---|---|---|---|
| Donley County | 927 | about the same | Compare |
| Wheeler County | 914.5 | about the same | Compare |
| Beckham CountyOklahoma | 901.7 | about the same | Compare |
| Hall County | 883.5 | about the same | Compare |
| Childress County | 696.5 | 1.3× smaller | Compare |
| Harmon CountyOklahoma | 537.3 | 1.7× smaller | Compare |
How big is Collingsworth County compared with U.S. states?
Collingsworth 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 284 areas the size of Collingsworth County.
Another way to picture it: the same land area would fill a square about 30.3 miles (48.8 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 Collingsworth County?
Collingsworth County has more land than 2,423 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 Collingsworth County at #904 nationally by total area, 105 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 Collingsworth County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #798 | Kay County, Oklahoma | 919.6 | Compare |
| #799 | Collingsworth County, Texas | 918.4 | This county |
| #800 | Jackson County, Florida | 918.3 | 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 34.965377, -100.271271. 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: 2,378,750,391 m²; AWATER: 2,278,703 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 Collingsworth County?
Collingsworth County, Texas has 918.4 square miles (2,378.8 km²) of land and 0.88 square miles of water, for a total area of 919.3 square miles. It ranks #799 of 3,222 U.S. county equivalents by land area.
Is Collingsworth County the largest county in Texas?
No. Collingsworth County ranks #111 of 254 in Texas by land area. The largest is Brewster County, with 6,183.8 square miles of land.
What counties border Collingsworth County?
Collingsworth County shares a land border with Donley County, Wheeler County, Childress County, Harmon County, Oklahoma, Beckham County, Oklahoma, and Hall County.
What is the population of Collingsworth County?
The Census Bureau estimates Collingsworth County had 2,487 residents on July 1, 2025, ranking #3,073 of 3,222 county equivalents. That is 2.7 people per square mile of land.
What is the county seat of Collingsworth County?
The county seat of Collingsworth County is Wellington.
What cities and towns are in Collingsworth County?
Collingsworth County has 2 incorporated places. The most populous are Wellington city and Dodson town; 628 residents live outside any incorporated place.
Is Collingsworth County part of a metropolitan area?
No. Collingsworth County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Collingsworth County?
6 ZIP Code Tabulation Areas have land in Collingsworth County, and 2 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Collingsworth 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 Collingsworth County?
The land measurement converts to approximately 587,802 acres. Including water, total area is approximately 588,365 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.