Latah County, Idaho Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 11th-largest in Idaho
The population of Latah County, Idaho is 40,315 as of the 2023 American Community Survey, making it the 11th-largest county in Idaho. The median household income is $65,179, the median home value is $342,500, and the median age is 30.7.
The population of Latah County has grown 13.2% since 2010 (37,258 → 42,180), a +0.89% annualized rate.
40,315
Population
+0.89%
Annual growth
37
People / sq mi
$65,179
Median Income
$342,500
Median Home Value
Latah County covers 1,076 sq mi of land at 37.5 people per square mile.
About Latah County, ID
Latah County is a county in Idaho with a population of 40,315. It ranks #11 among counties in Idaho by population. The median age is 30.7, younger than the national median. The population is 51.3% male and 48.7% female.
The median household income in Latah County is $65,179, below the US median of $74,580. 8.0% of residents live below the federal poverty level. Home values sit at a median of $342,500, with monthly rent averaging $905. The homeownership rate of 60.6% is lower than the national rate of 64.8%.
Educational attainment in Latah County reflects 44.9% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 9.9% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 18.1 minutes each way.
Latah County Population History (2010-2024)
The county of Latah County had a population of 37,258 in 2010 and 42,180 in 2024, a 13.2% growth over 14 years. The peak was 42,180 in 2024. Average annual growth rate: 0.89%.
42,180
Population (2024)
37,258
Population (2010)
42,180
Peak (2024)
0.89%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 37,258 |
| 2011 | 37,872 |
| 2012 | 38,127 |
| 2013 | 38,262 |
| 2014 | 38,570 |
| 2015 | 38,860 |
| 2016 | 39,157 |
| 2017 | 39,903 |
| 2018 | 39,996 |
| 2019 | 40,372 |
| 2020 | 39,638 |
| 2021 | 40,406 |
| 2022 | 41,330 |
| 2023 | 41,691 |
| 2024 | 42,180 |
Race & Ethnicity
| White | 88.6% |
| Black or African American | 1.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.0% |
| Two or More Races | 0.2% |
Age & Sex
30.7
Median Age
48.7%
Female
51.3%
Male
14.5%
Age 65+
Age Distribution
Children (under 15): 15.5% · Seniors (65+): 14.5%
Income & Poverty
| Median household income | $65,179$-9,457 vs state |
| Mean household income | $86,327 |
| Per-capita income | $35,157 |
| Poverty rate | 8.0%+1.0% vs state |
| Unemployment rate | 3.8% |
| Employment-to-population | 58.7% |
Top Industries by Employment
The largest employment sector in Latah County is professional & business services, accounting for 32.9% of workers.
How residents commute
0.2%
Drive alone
13.1%
Carpool
64.8%
Public transit
9.9%
Work from home
18.1 min
Avg commute
Housing
$342,500$-33,500 vs state
Median home value
$905
Median rent
60.6%
Homeownership rate
17,429
Total housing units
92.1%
Occupied
7.9%
Vacant
39.4%
Renter-occupied
Social & access
92.6%
With health insurance
96.0%
With broadband internet
55.5%
Foreign-born
5.7%
Veterans (18+)
12.1%
With a disability
94.3%
Speak language other than English at home
Education
96.9%
High School+
44.9%
Bachelor's+
Largest cities in Idaho
Other counties in Idaho
Part of Idaho
Metro areas in Idaho
County rankings
Frequently Asked Questions
Latah County, Idaho has a population of 40,315 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 11th-largest county in Idaho. Population density is 37 people per square mile.
The population of Latah County has grown 13.2% since 2010 (37,258 → 42,180), a +0.89% annualized rate.
The median household income in Latah County, Idaho is $65,179, with mean (average) household income of $86,327 and per-capita income of $35,157. 8.0% of residents live below the federal poverty level.
In Latah County, the largest racial and ethnic groups are White (88.6%), Hispanic or Latino (2.0%), Black or African American (1.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Latah County, Idaho is 30.7 years. Residents are 48.7% female and 51.3% male.
The median home value in Latah County is $342,500 and median monthly rent is $905. 60.6% of occupied housing units are owner-occupied. The county has 17,429 total housing units, 7.9% of which are vacant.
The largest employment sector in Latah County, Idaho is professional, scientific, and management services, employing 32.9% of workers. The unemployment rate is 3.8%.
Boise City is among the largest cities associated with Latah 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.