Louisa County, Iowa Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 68th-largest in Iowa
The population of Louisa County, Iowa is 10,710 as of the 2023 American Community Survey, making it the 68th-largest county in Iowa. The median household income is $80,223, the median home value is $137,600, and the median age is 41.8.
The population of Louisa County has declined 6.6% since 2010 (11,382 → 10,630), a -0.49% annualized rate.
10,710
Population
-0.49%
Annual growth
27
People / sq mi
$80,223
Median Income
$137,600
Median Home Value
Louisa County covers 402 sq mi of land at 26.7 people per square mile.
About Louisa County, IA
Louisa County is a county in Iowa with a population of 10,710. It ranks #68 among counties in Iowa by population. The median age is 41.8, older than the national median. The population is 51.2% male and 48.8% female.
The median household income in Louisa County is $80,223, above the US median of $74,580. 6.3% of residents live below the federal poverty level. Home values sit at a median of $137,600, with monthly rent averaging $797. The homeownership rate of 80.1% is higher than the national rate of 64.8%.
Educational attainment in Louisa County reflects 16.5% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 4.0% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 23.9 minutes each way.
Louisa County Population History (2010-2024)
The county of Louisa County had a population of 11,382 in 2010 and 10,630 in 2024, a -6.6% growth over 14 years. The peak was 11,384 in 2011. Average annual growth rate: -0.48%.
10,630
Population (2024)
11,382
Population (2010)
11,384
Peak (2011)
-0.48%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 11,382 |
| 2011 | 11,384 |
| 2012 | 11,364 |
| 2013 | 11,353 |
| 2014 | 11,254 |
| 2015 | 11,289 |
| 2016 | 11,219 |
| 2017 | 11,203 |
| 2018 | 11,135 |
| 2019 | 11,059 |
| 2020 | 10,825 |
| 2021 | 10,736 |
| 2022 | 10,657 |
| 2023 | 10,540 |
| 2024 | 10,630 |
Race & Ethnicity
| White | 82.5% |
| Black or African American | 0.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.4% |
| Two or More Races | 0.0% |
Age & Sex
41.8
Median Age
48.8%
Female
51.2%
Male
19.8%
Age 65+
Age Distribution
Children (under 15): 17.9% · Seniors (65+): 19.8%
Income & Poverty
| Median household income | $80,223+$7,076 vs state |
| Mean household income | $95,468 |
| Per-capita income | $35,747 |
| Poverty rate | 6.3%-0.6% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 62.1% |
Top Industries by Employment
The largest employment sector in Louisa County is manufacturing, accounting for 29.3% of workers.
How residents commute
0.0%
Drive alone
1.0%
Carpool
81.2%
Public transit
4.0%
Work from home
23.9 min
Avg commute
Housing
$137,600$-58,300 vs state
Median home value
$797
Median rent
80.1%
Homeownership rate
4,736
Total housing units
87.5%
Occupied
12.5%
Vacant
19.9%
Renter-occupied
Social & access
94.9%
With health insurance
93.3%
With broadband internet
13.4%
Foreign-born
6.5%
Veterans (18+)
15.6%
With a disability
85.3%
Speak language other than English at home
Education
87.6%
High School+
16.5%
Bachelor's+
Largest cities in Iowa
Other counties in Iowa
Part of Iowa
Metro areas in Iowa
County rankings
Frequently Asked Questions
Louisa County, Iowa has a population of 10,710 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 68th-largest county in Iowa. Population density is 27 people per square mile.
The population of Louisa County has declined 6.6% since 2010 (11,382 → 10,630), a -0.49% annualized rate.
The median household income in Louisa County, Iowa is $80,223, with mean (average) household income of $95,468 and per-capita income of $35,747. 6.3% of residents live below the federal poverty level.
In Louisa County, the largest racial and ethnic groups are White (82.5%), Hispanic or Latino (3.4%), Black or African American (0.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Louisa County, Iowa is 41.8 years. Residents are 48.8% female and 51.2% male.
The median home value in Louisa County is $137,600 and median monthly rent is $797. 80.1% of occupied housing units are owner-occupied. The county has 4,736 total housing units, 12.5% of which are vacant.
The largest employment sector in Louisa County, Iowa is manufacturing, employing 29.3% of workers. The unemployment rate is 2.5%.
Des Moines is among the largest cities associated with Louisa County, Iowa, with a population of 212,464.
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Statewide data for Iowa
Population, race, income, age, and trends across Iowa
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.