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
Minidoka County is a county in Idaho with a population of 21,922. It ranks #18 among counties in Idaho by population. The median age is 34.5, younger than the national median. The population is 51.3% male and 48.7% female.
The median household income in Minidoka County is $70,060, below the US median of $74,580. 10.6% of residents live below the federal poverty level. Home values sit at a median of $235,300, with monthly rent averaging $909. The homeownership rate of 72.8% is higher than the national rate of 64.8%.
Educational attainment in Minidoka County reflects 16.8% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 5.3% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 16.5 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.