Minidoka County, Idaho Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 18th-largest in Idaho
The population of Minidoka County, Idaho is 21,922 as of the 2023 American Community Survey, making it the 18th-largest county in Idaho. The median household income is $70,060, the median home value is $235,300, and the median age is 34.5.
The population of Minidoka County has grown 13.0% since 2010 (20,084 → 22,691), a +0.88% annualized rate.
21,922
Population
+0.88%
Annual growth
29
People / sq mi
$70,060
Median Income
$235,300
Median Home Value
Minidoka County covers 757 sq mi of land at 29.0 people per square mile.
About Minidoka County, ID
Age is the most distinctive thing about Minidoka County: a median age of 34.5, younger than the national median. With 21,922 residents, Minidoka County is a county in Idaho. It ranks #18 among counties in Idaho by population.
The typical household here earns about $70,060, below the US median of $78,538. About 10.6% of residents live below the federal poverty level, below the national 12.4%. A typical home is worth $235,300, with typical rent around $909.
College attainment is 16.8%, below the national 35.0%. Remote work is on the lower side here, at 5.3%, below the national 14.0%, and the average commute runs about 17 minutes each way.
Minidoka County Population History (2010-2024)
The county of Minidoka County had a population of 20,084 in 2010 and 22,691 in 2024, a 13.0% growth over 14 years. The peak was 22,691 in 2024. Average annual growth rate: 0.88%.
22,691
Population (2024)
20,084
Population (2010)
22,691
Peak (2024)
0.88%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 20,084 |
| 2011 | 20,208 |
| 2012 | 20,156 |
| 2013 | 20,399 |
| 2014 | 20,340 |
| 2015 | 20,431 |
| 2016 | 20,609 |
| 2017 | 20,683 |
| 2018 | 20,667 |
| 2019 | 20,910 |
| 2020 | 21,671 |
| 2021 | 21,951 |
| 2022 | 22,202 |
| 2023 | 22,526 |
| 2024 | 22,691 |
Race & Ethnicity
| White | 72.1% |
| Black or African American | 0.3% |
| Asian | 0.2% |
| Hispanic or Latino (any race) | 2.1% |
| Two or More Races | 0.0% |
Age & Sex
34.5
Median Age
48.7%
Female
51.3%
Male
15.7%
Age 65+
Age Distribution
Children (under 15): 24.2% · Seniors (65+): 15.7%
Income & Poverty
| Median household income | $70,060$-4,576 vs state |
| Mean household income | $85,696 |
| Per-capita income | $31,693 |
| Poverty rate | 10.6%+3.6% vs state |
| Unemployment rate | 1.9% |
| Employment-to-population | 61.3% |
Top Industries by Employment
The largest employment sector in Minidoka County is professional & business services, accounting for 18.7% of workers.
How residents commute
0.0%
Drive alone
0.7%
Carpool
80.8%
Public transit
5.3%
Work from home
16.5 min
Avg commute
Housing
$235,300$-140,700 vs state
Median home value
$909
Median rent
72.8%
Homeownership rate
8,478
Total housing units
92.2%
Occupied
7.8%
Vacant
27.2%
Renter-occupied
Social & access
87.0%
With health insurance
91.0%
With broadband internet
29.4%
Foreign-born
5.9%
Veterans (18+)
12.4%
With a disability
75.3%
Speak language other than English at home
Education
82.1%
High School+
16.8%
Bachelor's+
Largest cities in Idaho
Other counties in Idaho
Part of Idaho
Metro areas in Idaho
County rankings
Frequently Asked Questions
Minidoka County, Idaho has a population of 21,922 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 18th-largest county in Idaho. Population density is 29 people per square mile.
The population of Minidoka County has grown 13.0% since 2010 (20,084 → 22,691), a +0.88% annualized rate.
The median household income in Minidoka County, Idaho is $70,060, with mean (average) household income of $85,696 and per-capita income of $31,693. 10.6% of residents live below the federal poverty level.
In Minidoka County, the largest racial and ethnic groups are White (72.1%), Hispanic or Latino (2.1%), Black or African American (0.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Minidoka County, Idaho is 34.5 years. Residents are 48.7% female and 51.3% male.
The median home value in Minidoka County is $235,300 and median monthly rent is $909. 72.8% of occupied housing units are owner-occupied. The county has 8,478 total housing units, 7.8% of which are vacant.
The largest employment sector in Minidoka County, Idaho is professional, scientific, and management services, employing 18.7% of workers. The unemployment rate is 1.9%.
Boise City is among the largest cities associated with Minidoka 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.