Teton County is a county in the U.S. state of Wyoming. As of the 2020 United States census, the population was 23,331. Its county seat is Jackson. Its west boundary line is also the Wyoming state boundary shared with Idaho and the southern tip of Montana. Teton County is part of the Jackson, WY-ID Micropolitan Statistical Area. Teton County contains the Jackson Hole ski area, all of Grand Teton National Park, and 40.4% of Yellowstone National Park's total area, including over 96.6% of its water area (largely in Yellowstone Lake).
History
Teton County was created February 15, 1921, from a portion of Lincoln County. Its governing organization was completed in 1922. The county was named for the Teton Range. The county was created because the inhabitants lived too far away from Kemmerer, the county seat of Lincoln County. The creation of the county required a special act of the Wyoming Legislature, because the area was too poor and had too few people to qualify for county status under the normal requirements.
Geography
thumb|left|[[Snake River Overlook and the Teton Range, Teton County]]
thumb|left|[[Fishing Cone Geyser and Yellowstone Lake]]
According to the US Census Bureau, the county has a total area of , of which is land and (5.2%) is water.
Adjacent counties
- Park County – northeast
- Fremont County – east
- Sublette County – southeast
- Lincoln County – south
- Bonneville County, Idaho – southwest
- Teton County, Idaho – southwest
- Fremont County, Idaho – west
- Gallatin County, Montana – northwest
National protected areas
- Bridger-Teton National Forest (part)
- Caribou-Targhee National Forest (part)
- Grand Teton National Park
- John D. Rockefeller Memorial Parkway
- National Elk Refuge
- Shoshone National Forest (part)
- Yellowstone National Park (part)