Teton County, Idaho Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 28th-largest in Idaho
The population of Teton County, Idaho is 12,101 as of the 2023 American Community Survey, making it the 28th-largest county in Idaho. The median household income is $90,740, the median home value is $595,900, and the median age is 39.8.
The population of Teton County has grown 27.4% since 2010 (10,149 → 12,932), a +1.75% annualized rate.
12,101
Population
+1.75%
Annual growth
27
People / sq mi
$90,740
Median Income
$595,900
Median Home Value
Teton County covers 449 sq mi of land at 26.9 people per square mile.
About Teton County, ID
Housing cost is the defining feature of Teton County: the median home is valued at $595,900. Teton County is a county in Idaho with a population of 12,101. It ranks #28 among counties in Idaho by population.
Households here are among the highest-earning of all US counties: median income is $90,740, above the US median of $78,538. The poverty rate, 6.7%, is on the lower side for US counties and below the national 12.4%. Real estate commands a premium here — a median home value of $595,900, with typical rent around $1,196.
Degree attainment is near the top of the range for US counties: 48.3% of adults 25+ hold a bachelor’s, above the 35.0% national rate. Remote work is on the higher side at 14.4%, close to the national 14.0%, and the average commute runs about 30 minutes each way.
High housing values reframe the income picture in Teton County — even solid earnings stretch less against home prices and rents at this level.
Teton County Population History (2010-2024)
The county of Teton County had a population of 10,149 in 2010 and 12,932 in 2024, a 27.4% growth over 14 years. The peak was 12,932 in 2024. Average annual growth rate: 1.77%.
12,932
Population (2024)
10,149
Population (2010)
12,932
Peak (2024)
1.77%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 10,149 |
| 2011 | 10,161 |
| 2012 | 10,128 |
| 2013 | 10,410 |
| 2014 | 10,450 |
| 2015 | 10,744 |
| 2016 | 11,179 |
| 2017 | 11,463 |
| 2018 | 11,640 |
| 2019 | 12,096 |
| 2020 | 11,734 |
| 2021 | 12,273 |
| 2022 | 12,553 |
| 2023 | 12,632 |
| 2024 | 12,932 |
Race & Ethnicity
| White | 82.4% |
| Black or African American | 0.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.6% |
| Two or More Races | 0.0% |
Age & Sex
39.8
Median Age
49.0%
Female
51.0%
Male
13.5%
Age 65+
Age Distribution
Children (under 15): 19.2% · Seniors (65+): 13.5%
Income & Poverty
| Median household income | $90,740+$16,104 vs state |
| Mean household income | $117,932 |
| Per-capita income | $46,968 |
| Poverty rate | 6.7%-0.3% vs state |
| Unemployment rate | 1.1% |
| Employment-to-population | 72.2% |
Top Industries by Employment
The largest employment sector in Teton County is professional & business services, accounting for 15.4% of workers.
How residents commute
1.4%
Drive alone
2.8%
Carpool
70.0%
Public transit
14.4%
Work from home
29.9 min
Avg commute
Housing
$595,900+$219,900 vs state
Median home value
$1,196
Median rent
79.8%
Homeownership rate
6,199
Total housing units
73.8%
Occupied
26.2%
Vacant
20.2%
Renter-occupied
Social & access
85.3%
With health insurance
98.2%
With broadband internet
60.8%
Foreign-born
3.7%
Veterans (18+)
7.4%
With a disability
85.4%
Speak language other than English at home
Education
92.6%
High School+
48.3%
Bachelor's+
Largest cities in Idaho
Other counties in Idaho
Part of Idaho
Metro areas in Idaho
County rankings
Frequently Asked Questions
Teton County, Idaho has a population of 12,101 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 28th-largest county in Idaho. Population density is 27 people per square mile.
The population of Teton County has grown 27.4% since 2010 (10,149 → 12,932), a +1.75% annualized rate.
The median household income in Teton County, Idaho is $90,740, with mean (average) household income of $117,932 and per-capita income of $46,968. 6.7% of residents live below the federal poverty level.
In Teton County, the largest racial and ethnic groups are White (82.4%), Hispanic or Latino (2.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Teton County, Idaho is 39.8 years. Residents are 49.0% female and 51.0% male.
The median home value in Teton County is $595,900 and median monthly rent is $1,196. 79.8% of occupied housing units are owner-occupied. The county has 6,199 total housing units, 26.2% of which are vacant.
The largest employment sector in Teton County, Idaho is professional, scientific, and management services, employing 15.4% of workers. The unemployment rate is 1.1%.
Boise City is among the largest cities associated with Teton County, Idaho, with a population of 235,701.
Teton County, ID Climate
Teton County, ID has an average annual temperature of 4.2°C (40°F) and receives about 574 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
4.2°C
Avg Temp
574
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -9° / 16° | 58 mm |
| February | -6° / 21° | 43 mm |
| March | -2° / 29° | 43 mm |
| April | 3° / 38° | 43 mm |
| May | 9° / 47° | 74 mm |
| June | 13° / 56° | 51 mm |
| July | 17° / 62° | 37 mm |
| August | 17° / 62° | 36 mm |
| September | 12° / 53° | 42 mm |
| October | 6° / 42° | 43 mm |
| November | -2° / 29° | 52 mm |
| December | -7° / 19° | 52 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Teton County, ID
The most comfortable months to visit Teton County, ID are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 27°C high). The coldest is January (near -15°C low). May is usually the wettest month.
Where to stay near Teton County
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Population, race, income, age, and trends across Idaho
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.