County outline
Where Washakie County is located
Area breakdown
Land accounts for 99.8% of Washakie County’s measured area and water for 0.2%. Its combined area converts to 5,808.6 square kilometers or approximately 1,435,329 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 2,238.679 | 5,798.152 | 1,432,754.6 |
| Water | 4.022 | 10.417 | 2,574.1 |
| Total | 2,242.701 | 5,808.569 | 1,435,328.6 |
How Washakie County compares
By original Census land area, Washakie County ranks #19 of 23 in Wyoming and #250 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.56 times the Wyoming county-equivalent median of 3,996.8 square miles. It accounts for 2.3% of the combined county land area in the state.
See the complete Wyoming ranking · What counts as a county equivalent?
Population and density of Washakie County
The Census Bureau estimates that 7,597 people lived in Washakie County on July 1, 2025. That ranks #2,676 of 3,222 county equivalents nationally and #20 of 23 in Wyoming. Since the April 1, 2020 estimates base of 7,681, the population has declined by 84 (−1.1%), compared with +2.1% for Wyoming as a whole.
With 2,238.7 square miles of land, that is 3.4 people per square mile (1.3 per km²), placing Washakie County #2,951 nationally for density and #15 in Wyoming. The median county equivalent has 47 people per square mile; the Wyoming median is 4.1. Put another way, there are about 189 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 7,659 | 7,723 | 7,738 | 7,731 | 7,637 | 7,597 |
| Change | — | +64 | +15 | −7 | −94 | −40 |
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 Washakie County
2 incorporated places lie at least partly in Washakie County. Together they are home to 4,990 people (65.7%); the other 2,607 (34.3%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Worland city, with 4,730 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Worland cityCounty seat | 4,730 | −1.2% | 4.588 |
| Ten Sleep town | 260 | +3.2% | 0.188 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Washakie County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Washakie 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
2 ZIP Code Tabulation Areas have land in Washakie County, and each lies mostly inside the county.
8240182442
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering Washakie County
Washakie County shares a land border with 6 county equivalents. It has more land than 1 of them. The largest neighbor is Fremont County (9,183.6 mi²) and the smallest is Hot Springs County (2,004.4 mi²). Together with its neighbors, Washakie County forms a block of 32,997.4 mi² of land, of which it holds 6.8%.
| Bordering county equivalent | Land mi² | Size vs. Washakie | Compare |
|---|---|---|---|
| Fremont County | 9,183.6 | 4.1× larger | Compare |
| Park County | 6,939 | 3.1× larger | Compare |
| Natrona County | 5,340.5 | 2.4× larger | Compare |
| Johnson County | 4,154.2 | 1.9× larger | Compare |
| Big Horn County | 3,137 | 1.4× larger | Compare |
| Hot Springs County | 2,004.4 | 1.1× smaller | Compare |
How big is Washakie County compared with U.S. states?
Washakie County has more land than 2 of the 50 states. It is about 1.1 times the land area of Delaware (1,948.6 mi²), while Connecticut, the next larger state, has 2.2 times as much land (4,842.5 mi²). Wyoming’s county land could hold about 43 areas the size of Washakie County.
Another way to picture it: the same land area would fill a square about 47.3 miles (76.1 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 Washakie County?
Washakie County has more land than 2,972 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 Washakie County at #277 nationally by total area, 27 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 Washakie County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #249 | Montrose County, Colorado | 2,240.9 | Compare |
| #250 | Washakie County, Wyoming | 2,238.7 | This county |
| #251 | Butte County, Idaho | 2,236.5 | 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 43.878831, -107.669052. 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: 5,798,152,485 m²; AWATER: 10,415,891 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 Washakie County?
Washakie County, Wyoming has 2,238.7 square miles (5,798.2 km²) of land and 4.022 square miles of water, for a total area of 2,242.7 square miles. It ranks #250 of 3,222 U.S. county equivalents by land area.
Is Washakie County the largest county in Wyoming?
No. Washakie County ranks #19 of 23 in Wyoming by land area. The largest is Sweetwater County, with 10,427 square miles of land.
What counties border Washakie County?
Washakie County shares a land border with Hot Springs County, Big Horn County, Johnson County, Natrona County, Park County, and Fremont County.
What is the population of Washakie County?
The Census Bureau estimates Washakie County had 7,597 residents on July 1, 2025, ranking #2,676 of 3,222 county equivalents. That is 3.4 people per square mile of land.
What is the county seat of Washakie County?
The county seat of Washakie County is Worland.
What cities and towns are in Washakie County?
Washakie County has 2 incorporated places. The most populous are Worland city and Ten Sleep town; 2,607 residents live outside any incorporated place.
Is Washakie County part of a metropolitan area?
No. Washakie County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Washakie County?
2 ZIP Code Tabulation Areas have land in Washakie 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 Washakie County compare with U.S. states?
It has more land than 2 of the 50 states, including Delaware (1,948.6 square miles of land).
How many acres of land are in Washakie County?
The land measurement converts to approximately 1,432,755 acres. Including water, total area is approximately 1,435,329 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.