Teton County area

Population and density of Teton County

The Census Bureau estimates that 23,333 people lived in Teton County on July 1, 2025. That ranks #1,725 of 3,222 county equivalents nationally and #9 of 23 in Wyoming. Since the April 1, 2020 estimates base of 23,330, the population has grown by 3 (+0%), compared with +2.1% for Wyoming as a whole.

With 3,996.8 square miles of land, that is 5.8 people per square mile (2.3 per km²), placing Teton County #2,811 nationally for density and #7 in Wyoming. The median county equivalent has 47 people per square mile; the Wyoming median is 4.1. Put another way, there are about 110 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 Teton County

1 incorporated place lies at least partly in Teton County. Together they are home to 10,720 people (45.9%); the other 12,613 (54.1%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Jackson town, with 10,720 residents in the county.

Metropolitan area

Teton County is a central county of the Jackson, WY-ID Micropolitan Statistical Area. Its 2 county equivalents have 36,587 residents on 4,445.9 square miles of land; Teton County accounts for 89.9% of the land and 63.8% of the residents. By combined land it ranks #31 of 542 micropolitan areas, and #375 by population.

ZIP codes

9 ZIP Code Tabulation Areas have land in Teton County; 7 of them have most of their land inside the county, and the others mainly cover neighboring areas.

821908292583001830118301283013830148302583414

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 Teton County

Teton County shares a land border with 8 county equivalents, including 4 in Idaho and Montana. It has more land than 4 of them. The largest neighbor is Fremont County (9,183.6 mi²) and the smallest is Teton County (449.1 mi²). Together with its neighbors, Teton County forms a block of 35,865.7 mi² of land, of which it holds 11.1%.

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

Teton County has more land than 2 of the 50 states. It is about 2.1 times the land area of Delaware (1,948.6 mi²), while Connecticut, the next larger state, has 1.2 times as much land (4,842.5 mi²). Wyoming’s county land could hold about 24 areas the size of Teton County.

Another way to picture it: the same land area would fill a square about 63.2 miles (101.7 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 Teton County?

Teton County has more land than 3,102 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 Teton County at #121 nationally by total area, 1 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 5.2%, compared with a national county-equivalent median of 1.2% — 4.1 percentage points higher. 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 Teton 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.