Delaware County, Iowa Demographics 2026

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

Delaware County, Iowa has a population of 17,558, the 40th most populous county in Iowa. The median household income is $74,989 and the median home value is $177,900. The poverty rate is 7.8%.

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

Delaware County Quick Facts

Population 17,558

Median Household Income $74,989

Median Home Value $177,900

Poverty Rate 7.8%

Unemployment Rate 2.1%

Median Age 43.4 years

Homeownership Rate 79.6%

Affordability Ratio 2.4x

Bachelor's Degree+ 22.6%

High School Graduation 93.7%

Cities/Places 11

Population 17,558 40th of 99

Median Income $74,989 about the same as state

Poverty Rate 7.8%

Unemployment 2.1%

How Delaware 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	17,549	17,558	+0.1%
Median household income	$76,205	$74,989	-1.6%
Median home value	$168,700	$177,900	+5.5%

Median Household Income

Delaware

$74,989

$75,059

National

$80,734

Median Home Value

Delaware

$177,900

$208,000

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 12.8%

$25K-$50K 19.4%

$50K-$100K 34.7%

$100K+ 33.1%

Detailed income brackets

Under $10K

2.9%

$10K-$15K

4.1%

$15K-$20K

3.1%

$20K-$25K

2.6%

$25K-$30K

3.6%

$30K-$35K

4.5%

$35K-$40K

3.0%

$40K-$45K

3.6%

$45K-$50K

4.8%

$50K-$60K

6.4%

$60K-$75K

11.4%

$75K-$100K

16.9%

$100K-$125K

11.3%

$125K-$150K

5.6%

$150K-$200K

9.2%

$200K+

7.0%

Employment

2.1% Unemployment Rate State: 3.6%|National: 5.2%

69.6% Labor Force Participation

Housing Overview

Owner 79.6%

Renter 20.4%

Affordability Index Very Affordable

2.4x home value to income ratio

Median gross rent $764/mo 12.2% of median household income annually

People & Demographics

Age Distribution

Under 18

23.3%

18-34

17.2%

35-54

22.6%

55-74

27.8%

75+

9.1%

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 Delaware County

City	Population	Median Income	Poverty	Home Value
Manchester	5,191	$61,191	11.4%	$139,400
Earlville	868	$76,250	8.3%	$161,400
Edgewood	752	$61,625	8.6%	$173,700
Hopkinton	676	$71,563	10.8%	$127,400
Colesburg	545	$51,719	4.4%	$117,100
Delhi	432	$87,750	5.3%	$170,100
Ryan	346	$60,625	6.8%	$155,400
Greeley	252	$49,375	22.0%	$98,300
Dundee	177	$51,875	10.7%	$139,300
Delaware	138	$78,750	2.9%	$143,400
Masonville	68	$50,000	8.8%	$65,600

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

Delaware County is located in Iowa with a total population of 17,558. It is the 40th most populous county out of 99 in Iowa. The county encompasses 11 Census-designated places.

Age Demographics

The median age in Delaware County is 43.4 years. This is 12% higher than the state median of 38.6 years.

Economy, Income & Housing

The median household income in Delaware County is $74,989. This is about the same as the state median of $75,059. It is also 7% lower than the national median of $80,734. The poverty rate stands at 7.8%. This is 30% lower than the state poverty rate of 11.1%. The unemployment rate is 2.1%. This is 43% lower than the state rate of 3.6%. The median home value is $177,900. Housing costs are 14% lower than the state median of $208,000. With a home-value-to-income ratio of just 2.4x, Delaware County is one of the most affordable housing markets in the area. 79.6% of occupied housing units are owner-occupied. This homeownership rate is 11% higher than the state average of 71.7%.

Race & Ethnicity

Delaware County has a predominantly White (non-Hispanic) population, comprising 94.0% of all residents. Hispanic or Latino residents account for 1.7%. The Black or African American population (0.1%) is well below the state average of 3.8%. The Hispanic or Latino population (1.7%) is well below the state average of 7.3%.

Education

22.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 28% 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 93.7%.

Data Sources & Methodology

All figures for Delaware 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 Delaware County, Iowa?

Delaware County has a population of 17,558, making it the 40th most populous county in Iowa.

What is the median income in Delaware County?

The median household income in Delaware County is $74,989 with a poverty rate of 7.8%.

How many cities are in Delaware County, Iowa?

Delaware County contains 11 Census-designated places.