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 distinguished by its share of foreign-born residents, 13.4% of the population. Louisa County is a county in Iowa with a population of 10,710.
Households take in a median $80,223, comfortably near the US median of $78,538. The poverty rate, 6.3%, is on the lower side for US counties and below the national 12.4%. The typical home is valued at $137,600, with typical rent around $797.
College attainment is 16.5%, below the national 35.0%. Most workers commute: only 4.0% work from home, below the national 14.0%, and the average commute runs about 24 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.