Bonneville County, Idaho Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 4th-largest in Idaho

The population of Bonneville County, Idaho is 127,056 as of the 2023 American Community Survey, making it the 4th-largest county in Idaho. The median household income is $76,646, the median home value is $327,000, and the median age is 33.3.

The population of Bonneville County has grown 27.7% since 2010 (104,682 → 133,644), a +1.76% annualized rate.

Bonneville County within Idaho · Source: US Census TIGER/Line via us-atlas

127,056

Population

+1.76%

Annual growth

People / sq mi

$76,646

Median Income

$327,000

Median Home Value

Bonneville County covers 1,866 sq mi of land at 68.1 people per square mile.

About Bonneville County, ID

Age is the most distinctive thing about Bonneville County: a median age of 33.3, younger than the national median. With 127,056 residents, Bonneville County is a county in Idaho. That makes it one of the ten largest counties in Idaho in the country, at #4 by population.

The typical household earns $76,646 a year, near the US median of $78,538. The poverty rate, 6.4%, is on the lower side for US counties and below the national 12.4%. The median home value is $327,000, with typical rent around $1,054.

About 32.2% of adults 25 and older have a bachelor’s degree, below the 35.0% national figure. About 9.2% of the workforce is home-based, below the national 14.0%, and the average commute runs about 21 minutes each way.

Bonneville County Population History (2010-2024)

The county of Bonneville County had a population of 104,682 in 2010 and 133,644 in 2024, a 27.7% growth over 14 years. The peak was 133,644 in 2024. Average annual growth rate: 1.76%.

Bonneville County population, 2010–2024 · Source: U.S. Census Bureau — decennial census & Population Estimates

133,644

Population (2024)

104,682

Population (2010)

133,644

Peak (2024)

1.76%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	104,682	-	-	estimate
2011	105,833	+1,151	+1.10%	estimate
2012	106,788	+955	+0.90%	estimate
2013	107,407	+619	+0.58%	estimate
2014	108,285	+878	+0.82%	estimate
2015	109,916	+1,631	+1.51%	estimate
2016	112,162	+2,246	+2.04%	estimate
2017	114,608	+2,446	+2.18%	estimate
2018	116,661	+2,053	+1.79%	estimate
2019	119,286	+2,625	+2.25%	estimate
2020	124,736	+5,450	+4.57%	estimate
2021	128,072	+3,336	+2.67%	estimate
2022	129,690	+1,618	+1.26%	estimate
2023	131,475	+1,785	+1.38%	estimate
2024	133,644	+2,169	+1.65%	estimate

Race & Ethnicity

White	85.4%
Black or African American	0.5%
Asian	0.1%
Hispanic or Latino (any race)	1.7%
Two or More Races	0.0%

Age & Sex

33.3

Median Age

49.9%

Female

50.1%

Male

13.6%

Age 65+

Age Distribution

Under 5

7.6%

5–9

8.4%

10–14

9.0%

15–19

7.6%

20–24

6.0%

25–34

13.7%

35–44

13.6%

45–54

10.2%

55–59

5.0%

60–64

5.2%

65–74

8.2%

75–84

4.1%

85+

1.3%

Children (under 15): 25.0% · Seniors (65+): 13.6%

Income & Poverty

Median household income	$76,646+$2,010 vs state
Mean household income	$99,403
Per-capita income	$34,508
Poverty rate	6.4%-0.6% vs state
Unemployment rate	2.5%
Employment-to-population	62.5%

Top Industries by Employment

Professional & business services

23.5%

Finance & real estate

13.9%

Education & health care

10.0%

Construction

8.8%

Manufacturing

8.6%

Retail trade

4.5%

Information

4.2%

Public administration

4.1%

The largest employment sector in Bonneville County is professional & business services, accounting for 23.5% of workers.

How residents commute

2.2%

Drive alone

1.4%

Carpool

74.7%

Public transit

9.2%

Work from home

21.0 min

Avg commute

Housing

$327,000$-49,000 vs state

Median home value

$1,054

Median rent

71.6%

Homeownership rate

46,425

Total housing units

93.4%

Occupied

6.6%

Vacant

28.4%

Renter-occupied

Social & access

92.0%

With health insurance

96.3%

With broadband internet

39.6%

Foreign-born

8.1%

Veterans (18+)

13.7%

With a disability

90.3%

Speak language other than English at home

Education

92.1%

High School+

32.2%

Bachelor's+

Largest cities in Idaho

Boise City (235,701)Meridian (124,865)Nampa (106,289)Idaho Falls (66,672)Caldwell (63,465)Pocatello (57,152)Coeur d'Alene (55,558)Twin Falls (53,219)Post Falls (41,716)Rexburg (39,589)All Idaho cities →

Other counties in Idaho

Ada County (508,052)Canyon County (242,405)Kootenai County (177,736)Twin Falls County (92,121)Bannock County (88,457)Madison County (53,578)Bonner County (49,456)Bingham County (48,993)Nez Perce County (42,477)Latah County (40,315)All Idaho counties →

Part of Idaho

Idaho demographic profile All Idaho data →

Metro areas in Idaho

Boise City (790,640)Coeur d'Alene (177,736)Idaho Falls (161,944)Logan (151,746)Twin Falls (116,909)Pocatello (88,457)Lewiston (64,901)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

Bonneville County, Idaho has a population of 127,056 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 4th-largest county in Idaho. Population density is 68 people per square mile.

The population of Bonneville County has grown 27.7% since 2010 (104,682 → 133,644), a +1.76% annualized rate.

The median household income in Bonneville County, Idaho is $76,646, with mean (average) household income of $99,403 and per-capita income of $34,508. 6.4% of residents live below the federal poverty level.

In Bonneville County, the largest racial and ethnic groups are White (85.4%), Hispanic or Latino (1.7%), Black or African American (0.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Bonneville County, Idaho is 33.3 years. Residents are 49.9% female and 50.1% male.

The median home value in Bonneville County is $327,000 and median monthly rent is $1,054. 71.6% of occupied housing units are owner-occupied. The county has 46,425 total housing units, 6.6% of which are vacant.

The largest employment sector in Bonneville County, Idaho is professional, scientific, and management services, employing 23.5% of workers. The unemployment rate is 2.5%.

Boise City is among the largest cities associated with Bonneville County, Idaho, with a population of 235,701.