Valley County, Idaho Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 27th-largest in Idaho
The population of Valley County, Idaho is 12,136 as of the 2023 American Community Survey, making it the 27th-largest county in Idaho. The median household income is $76,125, the median home value is $599,500, and the median age is 49.0.
The population of Valley County has grown 30.5% since 2010 (9,788 → 12,777), a +1.92% annualized rate.
12,136
Population
+1.92%
Annual growth
3
People / sq mi
$76,125
Median Income
$599,500
Median Home Value
Valley County covers 3,665 sq mi of land at 3.3 people per square mile.
About Valley County, ID
What sets Valley County apart is where people work — remote work is unusually prominent here, at 23.5% versus 14.0% nationally. With 12,136 residents, Valley County is a county in Idaho. It ranks #27 among counties in Idaho by population.
Median household income is $76,125, near the US median of $78,538. Poverty is relatively low for US counties at 6.2%, below the national 12.4%. Home prices are steep, with the typical property valued at $599,500, with typical rent around $1,011.
About 35.4% of adults 25 and older have a bachelor’s degree, near the 35.0% national figure. Working from home is common here: 23.5% of workers do so, above the national 14.0%, and the average commute runs about 15 minutes each way.
The remote-work concentration is telling in Valley County — it skews toward higher-income, college-educated workers and reshapes both commute patterns and housing demand.
Valley County Population History (2010-2024)
The county of Valley County had a population of 9,788 in 2010 and 12,777 in 2024, a 30.5% growth over 14 years. The peak was 12,777 in 2024. Average annual growth rate: 1.93%.
12,777
Population (2024)
9,788
Population (2010)
12,777
Peak (2024)
1.93%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 9,788 |
| 2011 | 9,639 |
| 2012 | 9,544 |
| 2013 | 9,585 |
| 2014 | 9,805 |
| 2015 | 10,058 |
| 2016 | 10,438 |
| 2017 | 10,700 |
| 2018 | 11,054 |
| 2019 | 11,443 |
| 2020 | 11,842 |
| 2021 | 12,258 |
| 2022 | 12,436 |
| 2023 | 12,630 |
| 2024 | 12,777 |
Race & Ethnicity
| White | 95.1% |
| Black or African American | 0.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.4% |
| Two or More Races | 0.1% |
Age & Sex
49.0
Median Age
47.3%
Female
52.7%
Male
26.6%
Age 65+
Age Distribution
Children (under 15): 15.4% · Seniors (65+): 26.6%
Income & Poverty
| Median household income | $76,125+$1,489 vs state |
| Mean household income | $110,257 |
| Per-capita income | $38,932 |
| Poverty rate | 6.2%-0.8% vs state |
| Unemployment rate | 1.5% |
| Employment-to-population | 50.6% |
Top Industries by Employment
The largest employment sector in Valley County is professional & business services, accounting for 21.1% of workers.
How residents commute
0.5%
Drive alone
7.6%
Carpool
64.6%
Public transit
23.5%
Work from home
15.2 min
Avg commute
Housing
$599,500+$223,500 vs state
Median home value
$1,011
Median rent
85.8%
Homeownership rate
12,601
Total housing units
30.0%
Occupied
70.0%
Vacant
14.2%
Renter-occupied
Social & access
90.0%
With health insurance
96.7%
With broadband internet
51.1%
Foreign-born
10.4%
Veterans (18+)
11.0%
With a disability
97.9%
Speak language other than English at home
Education
91.0%
High School+
35.4%
Bachelor's+
Largest cities in Idaho
Other counties in Idaho
Part of Idaho
Metro areas in Idaho
County rankings
Frequently Asked Questions
Valley County, Idaho has a population of 12,136 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 27th-largest county in Idaho. Population density is 3 people per square mile.
The population of Valley County has grown 30.5% since 2010 (9,788 → 12,777), a +1.92% annualized rate.
The median household income in Valley County, Idaho is $76,125, with mean (average) household income of $110,257 and per-capita income of $38,932. 6.2% of residents live below the federal poverty level.
In Valley County, the largest racial and ethnic groups are White (95.1%), Hispanic or Latino (0.4%), Black or African American (0.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Valley County, Idaho is 49.0 years. Residents are 47.3% female and 52.7% male.
The median home value in Valley County is $599,500 and median monthly rent is $1,011. 85.8% of occupied housing units are owner-occupied. The county has 12,601 total housing units, 70.0% of which are vacant.
The largest employment sector in Valley County, Idaho is professional, scientific, and management services, employing 21.1% of workers. The unemployment rate is 1.5%.
Boise City is among the largest cities associated with Valley 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.