Linn County, Iowa Demographics 2026

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

Linn County, Iowa has a population of 230,004, the 2nd most populous county in Iowa. The median household income is $77,649 and the median home value is $214,300. The poverty rate is 9.4%.

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

Linn County Quick Facts

Population 230,004

Median Household Income $77,649

Median Home Value $214,300

Poverty Rate 9.4%

Unemployment Rate 3.5%

Median Age 39.0 years

Homeownership Rate 73.5%

Affordability Ratio 2.8x

Bachelor's Degree+ 34.7%

High School Graduation 95.2%

Cities/Places 18

Population 230,004 2nd of 99

Median Income $77,649 3% higher than state

Poverty Rate 9.4%

Unemployment 3.5%

How Linn 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	229,463	230,004	+0.2%
Median household income	$76,421	$77,649	+1.6%
Median home value	$204,400	$214,300	+4.8%

Median Household Income

Linn

$77,649

$75,059

National

$80,734

Median Home Value

Linn

$214,300

$208,000

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 12.0%

$25K-$50K 18.9%

$50K-$100K 31.4%

$100K+ 37.7%

Detailed income brackets

Under $10K

3.5%

$10K-$15K

2.4%

$15K-$20K

2.7%

$20K-$25K

3.4%

$25K-$30K

3.7%

$30K-$35K

3.3%

$35K-$40K

4.2%

$40K-$45K

3.4%

$45K-$50K

4.3%

$50K-$60K

6.5%

$60K-$75K

10.8%

$75K-$100K

14.0%

$100K-$125K

10.8%

$125K-$150K

7.4%

$150K-$200K

9.6%

$200K+

9.9%

Employment

3.5% Unemployment Rate State: 3.6%|National: 5.2%

67.8% Labor Force Participation

Housing Overview

Owner 73.5%

Renter 26.5%

Affordability Index Very Affordable

2.8x home value to income ratio

Median gross rent $945/mo 14.6% of median household income annually

People & Demographics

Age Distribution

Under 18

22.6%

18-34

22.2%

35-54

25.4%

55-74

22.6%

75+

7.3%

Race & Ethnicity

Diversity Index

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 Linn County

City	Population	Median Income	Poverty	Home Value
Cedar Rapids	137,264	$70,424	10.8%	$187,100
Marion	41,896	$86,743	8.2%	$241,700
Hiawatha	7,206	$66,270	13.7%	$216,900
Mount Vernon	4,513	$112,656	8.2%	$245,200
Robins	3,332	$122,262	8.9%	$413,400
Fairfax	2,900	$114,375	6.2%	$274,500
Center Point	2,562	$95,192	5.1%	$212,400
Ely	2,186	$105,882	2.4%	$311,900
Lisbon	1,714	$93,906	4.4%	$219,700
Palo	1,438	$106,375	5.5%	$282,400
Central City	1,356	$85,400	3.9%	$179,700
Walford	1,329	$128,750	1.1%	$303,000
Springville	1,172	$92,656	2.7%	$182,400
Alburnett	795	$105,357	2.4%	$199,200
Coggon	744	$76,250	2.8%	$164,700
Walker	661	$82,656	14.2%	$172,400
Bertram	239	$86,786	2.5%	$296,700
Prairieburg	143	$45,000	9.2%	$97,700

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

Linn County is located in Iowa with a total population of 230,004. It is the 2nd most populous county out of 99 in Iowa. The county encompasses 18 Census-designated places.

Age Demographics

The median age in Linn County is 39.0 years. This is 1% higher than the state median of 38.6 years.

Economy, Income & Housing

The median household income in Linn County is $77,649. This is 3% higher than the state median of $75,059. It is also 4% lower than the national median of $80,734. The poverty rate stands at 9.4%. This is 15% lower than the state poverty rate of 11.1%. The unemployment rate is 3.5%. This is 4% lower than the state rate of 3.6%. The median home value is $214,300. Housing costs are 3% higher than the state median of $208,000. With a home-value-to-income ratio of just 2.8x, Linn County is one of the most affordable housing markets in the area. 73.5% of occupied housing units are owner-occupied. This homeownership rate is 3% higher than the state average of 71.7%.

Race & Ethnicity

The largest racial or ethnic group in Linn County is White (non-Hispanic), making up 82.3% of the population. Black or African American residents account for 5.9%. The Black or African American population is significantly higher than the state average (5.9% vs 3.8%).

Education

34.7% of residents aged 25 and older hold a bachelor's degree or higher. This places Linn County in the top 10% of all counties in the state for educational attainment. This is 11% higher 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 95.2%.

Data Sources & Methodology

All figures for Linn 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 Linn County, Iowa?

Linn County has a population of 230,004, making it the 2nd most populous county in Iowa.

What is the median income in Linn County?

The median household income in Linn County is $77,649 with a poverty rate of 9.4%.

How many cities are in Linn County, Iowa?

Linn County contains 18 Census-designated places.