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Louisa County, IA
9 cities and towns and 5 ZIP codes in Louisa County, Iowa.
Population
10,678
Land area
402sq mi
People per sq mi
27
ZIP codes
5
Cities and towns in Louisa County
Louisa County at a glance
- Louisa County is 54% less dense than Iowa as a whole.
- Households here earn a median of $77,354 a year, 3% more than the Iowa figure of $75,059.
- A typical owner-occupied home is valued at $150,100 (28% below Iowa) and median rent is $775 a month.
- The biggest population centers are Columbus Junction (2,110), Wapello (1,765) and Morning Sun (802).
Local data for Louisa County, IA
Counts from official public data
Housing and community stats
Louisa County, IA, American Community Survey 2020-2024
Median household income
$77,354
Poverty rate
9.8%
Median home value
$150,100
Prices +15.8% in a year
Median rent
$775/mo
Homeownership
80.3%
Bachelor's or higher
16.8%
Median age
41.9
Average commute
27.3 min
Largest reported origins and ancestries: German Americans (2,277), Mexican Americans (1,679), Irish Americans (1,005).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
3.5%
Aug 2026, -0.5 pts in a year
Average annual pay
$52,455
3,697 jobs, 2025
Income per person
$55,311
BEA, 2024
Federal spending
$67.44M
FY 2026, $6,223 per person
PPP loans
$13.45M
534 loans, 1,820 jobs reported
Campaign donations
$8,875
Itemized, 2026 cycle
How people get to work
Louisa County, IA, workers 16 and older. American Community Survey 5-year estimates
- Drove alone80.4%
- Carpooled12.7%
- Public transit0.1%
- Walked0.8%
- Bicycle0.1%
- Taxi, ride-hailing, motorcycle or other1.7%
- Worked from home4.2%
Average one-way commute: 27.3 minutes for people who do not work from home.
Environment and hazard risk
Louisa County, IA, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: strong wind
Storm events since 1996
417
Most often thunderstorm wind
Flood insurance policies
97
1.6% of homes, county
July high / Jan low
84° / 11°F
38.8 inches of rain a year
Hazards, floods and storm historyCheck a flood zone5 historic places
Health statistics
Share of adults in Louisa County, IA, CDC PLACES estimates
Obesity
40.2%
U.S. 33.3% +6.9 pts
Diabetes
12.8%
U.S. 12.1% +0.7 pts
Smoking
15.7%
U.S. 12.8% +2.9 pts
Uninsured (18-64)
9.8%
U.S. 11.1% -1.3 pts
Cities, towns and ZIP codes in Louisa County
Population shown
Frequently asked questions
- What is the largest city in Louisa County, IA?
- Columbus Junction is the largest city or town in Louisa County, with about 2,110 residents.
- How many ZIP codes are in Louisa County?
- Louisa County includes 5 ZIP Code Tabulation Areas, including 52640, 52653, 52737, 52738, 52752.
- What is the population of Louisa County, IA?
- About 10,678 people live in Louisa County, based on American Community Survey 5-year estimates.
- What counties border Louisa County?
- Louisa County borders Johnson County, Rock Island County, IL, Muscatine County, Des Moines County, Washington County, Henry County, Mercer County, IL.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023