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
Teton County is a county in Idaho with a population of 12,101. It ranks #28 among counties in Idaho by population. The median age is 39.8, in line with the national median. The population is 51.0% male and 49.0% female.
The median household income in Teton County is $90,740, above the US median of $74,580. 6.7% of residents live below the federal poverty level. Home values sit at a median of $595,900, with monthly rent averaging $1,196. The homeownership rate of 79.8% is higher than the national rate of 64.8%.
Educational attainment in Teton County reflects 48.3% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 14.4% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 29.9 minutes each way.
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.
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Statewide data for Idaho
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.