County outline
Where Hemphill County is located
Area breakdown
Land accounts for 99.4% of Hemphill County’s measured area and water for 0.6%. Its combined area converts to 2,362.5 square kilometers or approximately 583,780 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 906.286 | 2,347.27 | 580,023 |
| Water | 5.871 | 15.206 | 3,757.4 |
| Total | 912.157 | 2,362.476 | 583,780.5 |
How Hemphill County compares
By original Census land area, Hemphill County ranks #131 of 254 in Texas and #829 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.997 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 Hemphill County
The Census Bureau estimates that 3,083 people lived in Hemphill County on July 1, 2025. That ranks #3,032 of 3,222 county equivalents nationally and #222 of 254 in Texas. Since the April 1, 2020 estimates base of 3,385, the population has declined by 302 (−8.9%), compared with +8.8% for Texas as a whole.
With 906.3 square miles of land, that is 3.4 people per square mile (1.3 per km²), placing Hemphill County #2,949 nationally for density and #214 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 188 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 3,365 | 3,325 | 3,205 | 3,150 | 3,138 | 3,083 |
| Change | — | −40 | −120 | −55 | −12 | −55 |
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 Hemphill County
1 incorporated place lies at least partly in Hemphill County. Together they are home to 2,129 people (69.1%); the other 954 (30.9%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Canadian city, with 2,129 residents in the county.
Metropolitan area
Hemphill 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 Hemphill County; 2 of them have most of their land inside the county, and the others mainly cover neighboring areas.
79003790117901479046
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 Hemphill County
Hemphill County shares a land border with 5 county equivalents, including 2 in Oklahoma. Each of them has more land than Hemphill County. The largest neighbor is Ellis County (1,231.5 mi²) and the smallest is Wheeler County (914.5 mi²). Together with its neighbors, Hemphill County forms a block of 6,049.7 mi² of land, of which it holds 15%.
| Bordering county equivalent | Land mi² | Size vs. Hemphill | Compare |
|---|---|---|---|
| Ellis CountyOklahoma | 1,231.5 | 1.4× larger | Compare |
| Roger Mills CountyOklahoma | 1,141.1 | 1.3× larger | Compare |
| Lipscomb County | 932.2 | about the same | Compare |
| Roberts County | 924.1 | about the same | Compare |
| Wheeler County | 914.5 | about the same | Compare |
How big is Hemphill County compared with U.S. states?
Hemphill 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 288 areas the size of Hemphill County.
Another way to picture it: the same land area would fill a square about 30.1 miles (48.4 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 Hemphill County?
Hemphill County has more land than 2,393 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 Hemphill County at #926 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 0.6%, compared with a national county-equivalent median of 1.2% — 0.5 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 Hemphill County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #828 | Lamar County, Texas | 907.3 | Compare |
| #829 | Hemphill County, Texas | 906.3 | This county |
| #830 | Scurry County, Texas | 905.4 | 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 35.816000, -100.279190. 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: 2,347,270,017 m²; AWATER: 15,205,584 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 Hemphill County?
Hemphill County, Texas has 906.3 square miles (2,347.3 km²) of land and 5.871 square miles of water, for a total area of 912.2 square miles. It ranks #829 of 3,222 U.S. county equivalents by land area.
Is Hemphill County the largest county in Texas?
No. Hemphill County ranks #131 of 254 in Texas by land area. The largest is Brewster County, with 6,183.8 square miles of land.
What counties border Hemphill County?
Hemphill County shares a land border with Roberts County, Wheeler County, Lipscomb County, Roger Mills County, Oklahoma, and Ellis County, Oklahoma.
What is the population of Hemphill County?
The Census Bureau estimates Hemphill County had 3,083 residents on July 1, 2025, ranking #3,032 of 3,222 county equivalents. That is 3.4 people per square mile of land.
What is the county seat of Hemphill County?
The county seat of Hemphill County is Canadian.
Is Hemphill County part of a metropolitan area?
No. Hemphill County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Hemphill County?
4 ZIP Code Tabulation Areas have land in Hemphill 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 Hemphill 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 Hemphill County?
The land measurement converts to approximately 580,023 acres. Including water, total area is approximately 583,780 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.