Teton County, Wyoming

Teton County is a county in Wyoming, United States, about 260 miles northwest of Cheyenne and
90 miles north of Idaho Falls, Idaho. It had a population of 23,331 at the 2020 census, an
estimated 23,333 by 2025, and covers 3,995 square miles (10,350 km2) of land centred near
43°55′N 110°34′W.

Jackson is the county seat and the county’s only incorporated town; its postal code is 83001.
The county holds 1 town, 8 census-designated places and 6 smaller unincorporated communities, and
it runs on Mountain Time. Its FIPS code is 56039.

Towns & Villages in Teton County

Teton County has 15 named places on record: 1 incorporated town, 8 census-designated places
(CDPs) recognized by the Census Bureau, and 6 unincorporated communities with no CDP boundary or
local government of their own. CDP stands for census designated place; Unincorp. covers
gateway settlements, park headquarters and geothermal-basin place names with no formal
boundary.

Kelly sits on the site of Grovont, its own original name — the settlement formed in the
late 1890s as Grovont and was renamed Kelly in 1909 to avoid confusion with a similarly named
place nearby, so the two names refer to one community, not two. Hoback Junction is the highway
crossroads at the south end of the Hoback CDP, not a separate census place. Colter Bay Village
and Beaver Creek both sit inside Grand Teton National Park near Moose; West Thumb is on
Yellowstone Lake’s western arm, inside the sliver of Yellowstone National Park that falls in
Teton County rather than neighboring Park County.

Geography

Teton County occupies Wyoming’s northwest corner, straddling the Teton Range and the
Jackson Hole valley along the upper Snake River. The county holds all of Grand Teton National
Park and 40.4 percent of Yellowstone National Park’s total area, including about 96.6
percent of Yellowstone Lake’s water surface. Grand Teton itself, the range’s highest
summit, rises to 13,775 feet (4,199 m) inside the county. Of the county’s 4,216 square
miles, 3,995 are land and 221 are water — 5.2 percent, unusually high for Wyoming, thanks
to Jackson Lake, Yellowstone Lake and the Snake River system.

Park County borders Teton County to the northeast, Fremont County to the east, Sublette
County to the southeast, and Lincoln County to the south. Idaho’s Teton County lies
directly across the range to the southwest, with Bonneville County and Fremont County, Idaho
also touching the county’s western edge, and Gallatin County, Montana meets its
northwestern corner inside Yellowstone. Park County,
Fremont County,
Sublette County,
Lincoln County,
Bonneville County, Idaho and
Fremont County, Idaho all have
their own pages here; Idaho’s Teton County and
Gallatin County, Montana round
out the boundary.

Demographics

Teton County had a population of 23,331 at the 2020 census, and the latest estimate puts the
county near 23,333 residents. Jackson and Wilson are the two largest communities, together
holding well over half the county’s population. Median household income runs $124,172
(2024 ACS estimate), far above Wyoming’s statewide figure of $72,415 (2023 ACS) —
Teton County has posted the highest per-capita income of any US county in recent Bureau of
Economic Analysis rankings. Population density works out to roughly 5.8 people per square mile
of land, among the lowest in the lower 48 for a county this wealthy, reflecting how much of its
area sits inside the two national parks.

Economy & Local Life

Retail trade employs the most county residents, about 2,257 workers, followed closely by
accommodation and food services at 2,252 and construction at 1,893, out of roughly 15,075
employed residents total. Jackson Hole Mountain Resort at Teton Village anchors the winter
economy, alongside Snow King Mountain and Grand Targhee ski areas nearby. The Jackson Hole
Airport, inside Grand Teton National Park, is the only commercial airport located within a
national park in the country and the busiest in Wyoming. Since 1978 the Federal Reserve Bank of
Kansas City has hosted its annual Jackson Hole Economic Policy Symposium here each August,
drawing central bankers from around the world. Grand Teton and Yellowstone together bring
millions of visitors through the county each year — Grand Teton alone logged 3.8 million
visits in 2025.

History

Wyoming’s legislature created Teton County on 15 February 1921, carving it out of
Lincoln County; the county organized in 1922. Lawmakers made the exception because residents
lived too far from Kemmerer, the Lincoln County seat, to be served by it. The Teton Range that
gives the county its name was named by French-Canadian trappers, who called the three highest
peaks les trois tétons.

On 23 June 1925, roughly 50 million cubic yards of rock and soil broke off Sheep Mountain and
slid across the Gros Ventre River, damming it and forming Lower Slide Lake. Almost two years
later, on 18 May 1927, part of that unstable dam gave way. The resulting flood ran six feet deep
for at least 25 miles downstream and destroyed the small settlement of Kelly, killing six
people.

Getting There

No interstate highway crosses Teton County. US Routes 26, 89, 191 and 287 converge on Jackson,
with US 89/191/287 continuing north through Moran to Yellowstone’s South Entrance, and
Wyoming Highway 22 crossing Teton Pass west toward Idaho.

• Idaho Falls, Idaho — about 90 miles west
• Rock Springs — about 175 miles south
• Cody — about 175 miles northeast
• Pinedale — about 75 miles south

Jackson Hole Airport, just north of Jackson inside Grand Teton National Park, is the
county’s own commercial airport and Wyoming’s busiest. No Amtrak line reaches Teton
County; the nearest Amtrak service is well over 200 miles away, so most rail travelers connect
through a regional airport instead.

Frequently Asked Questions

Where is Teton County located?
It sits in Wyoming’s northwest corner, about 260 miles northwest of Cheyenne, bordered by
Park, Fremont, Sublette and Lincoln counties in Wyoming and by counties in Idaho and Montana.

What is the population of Teton County?
23,331 at the 2020 census, with a 2025 estimate near 23,333.

How big is Teton County?
4,216 square miles total, of which 3,995 square miles (10,350 km2) are land.

What is the county seat of Teton County?
Jackson, the county’s only incorporated town, is the county seat.

How many towns and villages are in Teton County?
One incorporated town, Jackson, plus eight census-designated places — Wilson, Moose Wilson
Road, South Park, Hoback, Rafter J Ranch, Teton Village, Alta and Kelly — and six smaller
unincorporated places: Moose, Moran, Hoback Junction, Colter Bay Village, Beaver Creek and West
Thumb.

What ZIP codes does Teton County use?
83001 for Jackson, 83014 for Wilson, 83025 for Teton Village, 83414 for Alta, 83011 for Kelly,
83012 for Moose and 83013 for Moran.

What is Teton County known for?
Grand Teton National Park in its entirety, 40 percent of Yellowstone National Park, and the
highest per-capita income of any county in the United States.

More counties in this state: Towns and villages in Wyoming.