Iowa County, Iowa Demographics 2026

Name: Iowa County, Iowa Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Iowa County, Iowa has a population of 16,507, the 45th most populous county in Iowa. The median household income is $71,223 and the median home value is $193,900. The poverty rate is 8.8%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Iowa County Quick Facts

Population 16,507

Median Household Income $71,223

Median Home Value $193,900

Poverty Rate 8.8%

Unemployment Rate 1.9%

Median Age 42.4 years

Homeownership Rate 76.6%

Affordability Ratio 2.7x

Bachelor's Degree+ 24.8%

High School Graduation 95.5%

Cities/Places 14

Population 16,507 45th of 99

Median Income $71,223 5% lower than state

Poverty Rate 8.8%

Unemployment 1.9%

How Iowa County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	16,547	16,507	-0.2%
Median household income	$72,185	$71,223	-1.3%
Median home value	$189,800	$193,900	+2.2%

Median Household Income

Iowa

$71,223

$75,059

National

$80,734

Median Home Value

Iowa

$193,900

$208,000

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 11.4%

$25K-$50K 20.5%

$50K-$100K 34.6%

$100K+ 33.5%

Detailed income brackets

Under $10K

2.9%

$10K-$15K

2.3%

$15K-$20K

3.8%

$20K-$25K

2.4%

$25K-$30K

2.6%

$30K-$35K

5.0%

$35K-$40K

5.9%

$40K-$45K

4.1%

$45K-$50K

2.9%

$50K-$60K

9.5%

$60K-$75K

11.1%

$75K-$100K

14.0%

$100K-$125K

11.8%

$125K-$150K

8.0%

$150K-$200K

8.1%

$200K+

5.5%

Employment

1.9% Unemployment Rate State: 3.6%|National: 5.2%

66.7% Labor Force Participation

Housing Overview

Owner 76.6%

Renter 23.4%

Affordability Index Very Affordable

2.7x home value to income ratio

Median gross rent $686/mo 11.6% of median household income annually

People & Demographics

Age Distribution

Under 18

23.3%

18-34

17.4%

35-54

23.6%

55-74

27.1%

75+

8.5%

Race & Ethnicity

Diversity Index

Very Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 31 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Iowa County

City	Population	Median Income	Poverty	Home Value
Williamsburg	3,360	$58,059	5.8%	$204,300
Marengo	2,725	$57,941	13.2%	$123,200
North English	852	$54,531	10.3%	$118,600
Amana	755	$145,903	8.1%	$248,400
Middle Amana	683	$100,296	7.3%	$267,000
Parnell	303	$70,893	13.2%	$181,300
Homestead	252	$74,886	0.0%	$179,900
Ladora	240	$60,625	9.6%	$78,200
Conroy	199	N/A	4.0%	$213,000
Millersburg	129	$79,688	7.0%	$106,500
West Amana	124	$55,977	0.0%	$184,100
South Amana	121	$109,792	0.0%	$331,300
East Amana	91	N/A	87.9%	N/A
High Amana	36	N/A	0.0%	N/A

Explore Iowa Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Iowa County is located in Iowa with a total population of 16,507. It is the 45th most populous county out of 99 in Iowa. The county encompasses 14 Census-designated places.

Age Demographics

The median age in Iowa County is 42.4 years. This is 10% higher than the state median of 38.6 years.

Economy, Income & Housing

The median household income in Iowa County is $71,223. This is 5% lower than the state median of $75,059. It is also 12% lower than the national median of $80,734. The poverty rate stands at 8.8%. This is 20% lower than the state poverty rate of 11.1%. The unemployment rate is 1.9%. This is 47% lower than the state rate of 3.6%. The median home value is $193,900. Housing costs are 7% lower than the state median of $208,000. With a home-value-to-income ratio of just 2.7x, Iowa County is one of the most affordable housing markets in the area. 76.6% of occupied housing units are owner-occupied. This homeownership rate is 7% higher than the state average of 71.7%.

Race & Ethnicity

Iowa County has a predominantly White (non-Hispanic) population, comprising 92.5% of all residents. Hispanic or Latino residents account for 3.4%. The Black or African American population (0.3%) is well below the state average of 3.8%. The Hispanic or Latino population (3.4%) is well below the state average of 7.3%. The Asian population (0.2%) is well below the state average of 2.5%.

Education

24.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 21% lower than the state rate of 31.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.5%.

Data Sources & Methodology

All figures for Iowa County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Iowa and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Iowa County, Iowa?

Iowa County has a population of 16,507, making it the 45th most populous county in Iowa.

What is the median income in Iowa County?

The median household income in Iowa County is $71,223 with a poverty rate of 8.8%.

How many cities are in Iowa County, Iowa?

Iowa County contains 14 Census-designated places.