Bannock County, Idaho Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 6th-largest in Idaho
The population of Bannock County, Idaho is 88,457 as of the 2023 American Community Survey, making it the 6th-largest county in Idaho. The median household income is $64,080, the median home value is $267,200, and the median age is 35.0.
The population of Bannock County has grown 9.6% since 2010 (83,026 → 91,010), a +0.66% annualized rate.
88,457
Population
+0.66%
Annual growth
80
People / sq mi
$64,080
Median Income
$267,200
Median Home Value
Bannock County covers 1,112 sq mi of land at 79.5 people per square mile.
About Bannock County, ID
Bannock County is a county in Idaho with a population of 88,457. It ranks #6 among counties in Idaho by population. The median age is 35.0, younger than the national median. The population is 50.2% male and 49.8% female.
The median household income in Bannock County is $64,080, below the US median of $74,580. 7.6% of residents live below the federal poverty level. Home values sit at a median of $267,200, with monthly rent averaging $879. The homeownership rate of 68.6% is higher than the national rate of 64.8%.
Educational attainment in Bannock County reflects 30.2% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 10.5% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 18.3 minutes each way.
Bannock County Population History (2010-2024)
The county of Bannock County had a population of 83,026 in 2010 and 91,010 in 2024, a 9.6% growth over 14 years. The peak was 91,010 in 2024. Average annual growth rate: 0.66%.
91,010
Population (2024)
83,026
Population (2010)
91,010
Peak (2024)
0.66%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 83,026 |
| 2011 | 83,657 |
| 2012 | 83,781 |
| 2013 | 83,494 |
| 2014 | 83,587 |
| 2015 | 84,263 |
| 2016 | 84,762 |
| 2017 | 85,571 |
| 2018 | 86,761 |
| 2019 | 87,822 |
| 2020 | 87,281 |
| 2021 | 88,523 |
| 2022 | 89,871 |
| 2023 | 90,585 |
| 2024 | 91,010 |
Race & Ethnicity
| White | 84.3% |
| Black or African American | 0.9% |
| Asian | 0.1% |
| Hispanic or Latino (any race) | 4.2% |
| Two or More Races | 0.1% |
Age & Sex
35.0
Median Age
49.8%
Female
50.2%
Male
15.0%
Age 65+
Age Distribution
Children (under 15): 21.0% · Seniors (65+): 15.0%
Income & Poverty
| Median household income | $64,080$-10,556 vs state |
| Mean household income | $83,414 |
| Per-capita income | $32,268 |
| Poverty rate | 7.6%+0.6% vs state |
| Unemployment rate | 2.9% |
| Employment-to-population | 59.1% |
Top Industries by Employment
The largest employment sector in Bannock County is professional & business services, accounting for 29.0% of workers.
How residents commute
1.2%
Drive alone
2.5%
Carpool
75.1%
Public transit
10.5%
Work from home
18.3 min
Avg commute
Housing
$267,200$-108,800 vs state
Median home value
$879
Median rent
68.6%
Homeownership rate
35,683
Total housing units
93.4%
Occupied
6.6%
Vacant
31.4%
Renter-occupied
Social & access
92.8%
With health insurance
94.5%
With broadband internet
37.7%
Foreign-born
7.0%
Veterans (18+)
15.4%
With a disability
94.2%
Speak language other than English at home
Education
93.8%
High School+
30.2%
Bachelor's+
Largest cities in Idaho
Other counties in Idaho
Part of Idaho
Metro areas in Idaho
County rankings
Frequently Asked Questions
Bannock County, Idaho has a population of 88,457 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 6th-largest county in Idaho. Population density is 80 people per square mile.
The population of Bannock County has grown 9.6% since 2010 (83,026 → 91,010), a +0.66% annualized rate.
The median household income in Bannock County, Idaho is $64,080, with mean (average) household income of $83,414 and per-capita income of $32,268. 7.6% of residents live below the federal poverty level.
In Bannock County, the largest racial and ethnic groups are White (84.3%), Hispanic or Latino (4.2%), Black or African American (0.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Bannock County, Idaho is 35.0 years. Residents are 49.8% female and 50.2% male.
The median home value in Bannock County is $267,200 and median monthly rent is $879. 68.6% of occupied housing units are owner-occupied. The county has 35,683 total housing units, 6.6% of which are vacant.
The largest employment sector in Bannock County, Idaho is professional, scientific, and management services, employing 29.0% of workers. The unemployment rate is 2.9%.
Boise City is among the largest cities associated with Bannock 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.