Linn County, IA demographics:
population, income, and more

Total population
230,004
0.2% year-over-year change
Median household income
$77,649/yr
1.6% year-over-year change
Housing units
103,104
1.1% year-over-year change

Linn County population

How many people live in Linn County

Linn County is home to 230,004 residents, according to the most recent Census data. Gender-wise, 49.4% of Linn County locals are male, and 50.6% are female.

Total population
230,004
0.2% year-over-year change
Gender ratio
Male
49.4%
113,506
Female
50.6%
116,498
Value Percent YoY change
Male 113,506 49.4% 0.1%
Female 116,498 50.6% 0.4%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Linn County is 39, with the population distributed as follows: about 18.5% are children under 15, then 13% are in the 15 to 24 age group. Adults between 25 and 44 make up 26.6% of the population, while another 24.6% fall into the 45 to 64 bracket. Finally, around 17.3% are 65 or older.

Median age
39
Age breakdown
Under 15
18.5%
15 to 24
13%
25 to 44
26.6%
45 to 64
24.6%
Over 65
17.3%
Value Percent YoY change
Under 15 42,547 18.5% -0.9%
15 to 24 29,923 13% -0.0%
25 to 44 61,255 26.6% 0.1%
45 to 64 56,477 24.6% -0.4%
Over 65 39,802 17.3% 2.8%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Linn County, 93.8% of the population are US-born citizens, while 3.7% have gained naturalized citizenship. At the same time, 2.5% of residents are non-citizens. As for race, 83.6% of locals are Caucasian, 6% are African American and 2.4% have Asian roots. There’s also a share of 6.5% that includes residents with two or more races.

Citizenship
U.S.-born citizens
93.8%
Non-U.S.-born citizens
3.7%
Non-citizens
2.5%
Value Percent YoY change
U.S.-born citizens 215,702 93.8% -0.2%
Non-U.S.-born citizens 8,469 3.7% 7.4%
Non-citizens 5,833 2.5% 6.2%
Racial breakdown
White
83.6%
Black or African American
6%
American Indian and Alaska Native
0.2%
Asian
2.4%
Native Hawaiian and other Pacific Islander
0%
Two or more races
6.5%
Other
1.2%
Value Percent
White 192,362 83.6%
Black or African American 13,735 6%
American Indian and Alaska Native 507 0.2%
Asian 5,504 2.4%
Native Hawaiian and other Pacific Islander 53 0%
Two or more races 15,022 6.5%
Other 2,821 1.2%

Households in Linn County

A peek inside Linn County households

Linn County has 95,600 households, with an average of 2 members in each. Of these, 61.9% are families, while the remaining 38.1% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
95,600
0.6% year-over-year change
Average people per household
2
Non-family households
36,441
Family households
59,159
Value Percent YoY change
Non-family households 36,441 38.1% 1.1%
Family households 59,159 61.9% 0.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Linn County

The housing landscape of Linn County

Linn County's housing consists of 103,104 units, with 66.7% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 5.3% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 3.4% of the housing landscape.

Housing units
103,104
1.1% year-over-year change
Housing types
Value Percent
1 unit, detached 68,728 66.7%
1 unit, attached 5,421 5.3%
2 units 1,476 1.4%
3 or 4 units 4,732 4.6%
5 to 9 units 4,712 4.6%
10 to 19 units 6,998 6.8%
20 to 49 units 4,419 4.3%
50 or more units 3,071 3%
Mobile home 3,547 3.4%
Homes built since 2020
1,831
83.3% year-over-year change

The age of buildings in Linn County

In Linn County, the median construction year is 1978. About 13.7% of homes were built before the 1940s, with another 3.2% going up by 1949. Most development happened in the second half of the 20th century. Then, 14.1% of homes were added from 2000 to 2009, 11.1% between 2010 and 2019, and 1.8% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 14,118 13.7% -2.0%
Built between 1940 and 1949 3,300 3.2% -0.5%
Built between 1950 and 1959 10,496 10.2% 0.5%
Built between 1960 and 1969 12,602 12.2% 1.8%
Built between 1970 and 1979 14,330 13.9% 0.6%
Built between 1980 and 1989 7,954 7.7% 0.6%
Built between 1990 and 1999 12,497 12.1% -3.0%
Built between 2000 and 2009 14,547 14.1% 5.1%
Built between 2010 and 2019 11,429 11.1% -1.0%
Built in 2020 or later 1,831 1.8% 83.3%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Linn County occupancy rates

Out of the 95,600 occupied housing units in Linn County, 73.5% are owner-occupied, while 26.5% are lived in by tenants. Meanwhile, 7.3% of all homes on the local market sit vacant.

Occupied housing units
95,600
0.6% year-over-year change
Occupancy breakdown
Renter occupied
25,326
Owner occupied
70,274
Value Percent YoY
change
Renter occupied 25,326 26.5% -0.2%
Owner occupied 70,274 73.5% 0.8%
Unoccupied housing units
7.3%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Linn County housing costs

Housing costs in Linn County come to a median of $1,151 per month, while tenants specifically pay a median gross rent of $945.

Median housing costs per month
$1,151/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Linn County
$945/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Linn County

Linn County education at a glance

About 31.8% of the population in Linn County went to high school, while 22.8% pursued college studies. Another 12.3% earned an associate degree and 21.7% hold a bachelor’s. Meanwhile, 10.2% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 2,234 1.2% 5.7%
High school diploma 56,639 31.8% 3.0%
College diploma 40,548 22.8% -0.4%
Associate degree 21,870 12.3% -3.2%
Bachelor's degree 38,691 21.7% -0.7%
Graduate degree 18,165 10.2% 1.9%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Linn County

How much people earn in Linn County

The average annual household income in Linn County was $104,478 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.7% change from the previous year. At the same time, the median income stood at $77,649, reflecting a +1.6% shift over the same period.

Average household income in Linn County
$104,478/year
2.7% year-over-year change
Median household income in Linn County
$77,649/year
1.6% year-over-year change

Linn County income by age

In Linn County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $83,452. Those with someone between 45 and 64 in charge, often well established professionally, earn $100,364 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $47,218, while those led by someone over 65, many of whom may be retired, have about $61,583 in earnings. Overall, 90.6% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $47,218 5.4%
25 - 44 $83,452 0.0%
45 - 64 $100,364 6.8%
Over 65 $61,583 5.9%
Above poverty level
201,458
Below poverty level
20,923
Value Percent YoY
change
Above poverty level 201,458 90.6% 0.7%
Below poverty level 20,923 9.4% -4.2%

Employment in Linn County

Workforce and job types in Linn County

The job market in Linn County is powered by 120,795 working residents, spread across a range of industries and roles. 76.3% of the working population are employed in professional or administrative positions, while 23.7% are in hands-on or service-based jobs. Also, 8.2% run their own businesses, 72.2% are employed by private companies, and 11.9% work in the public sector.

Workforce demographics

Working population
120,795
0.3% year-over-year change
White collar
92,204
Blue collar
28,591
Value Percent YoY change
White collar 92,204 76.3% 0.4%
Blue collar 28,591 23.7% 0.2%
Employer type
Self employees
8.2%
Private companies
72.2%
Governmental workers
11.9%
Not for profit companies
7.7%
Value Percent YoY change
Self employees 9,931 8.2% 7.0%
Private companies 87,212 72.2% -0.6%
Governmental workers 14,333 11.9% 3.0%
Not for profit companies 9,319 7.7% -1.6%
Unemployment rate
3.4%
-6.2% year-over-year change

Available workforce

The unemployment rate in Linn County stands at 3.4%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Linn County

How people get around in Linn County

Commuting methods vary: 81.9% of residents travel by personal vehicle and 1.8% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 97,240 81.9% -0.5%
Taxicab 36 0% -2.7%
Bus or trolleybus 645 0.5% -9.7%
Ferryboat 71 0.1% N/A
Motorcycle 201 0.2% 33.1%
Bicycle 209 0.2% -29.1%
Walk 2,181 1.8% -2.1%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Linn County by zipcode?

Zipcode Population Number of households Median income Average income
52202 1,269 529 $105,362 $107,210
52205 8,627 3,072 $72,500 $91,248
52213 4,114 1,647 $98,854 $110,821
52214 2,761 1,116 $86,786 $109,360
52218 1,413 635 $82,344 $100,013
52219 143 64 $45,000 $106,716
52227 2,996 1,123 $120,230 $129,400
52228 3,802 1,416 $118,125 $175,757
52233 7,000 2,832 $65,575 $93,014
52253 2,622 1,050 $104,821 $125,084

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FAQs about Linn County demographics 

What is the total population of Linn County?

Linn County has a total population of 230,004 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.2% compared to a year ago.

What is the gender ratio in Linn County?

The gender ratio in Linn County is as follows:
  • 49.4% males (113,506 residents)
  • 50.6% females (116,498 residents)

What is the median age in Linn County?

The median age in Linn County is 39.

What is the age distribution of the population in Linn County?

The age distribution in Linn County is as follows:
  • Under 15: 18.5% (42,547 residents)
  • Ages 15-24: 13% (29,923 residents)
  • Ages 25-44: 26.6% (61,255 residents)
  • Ages 45-64: 24.6% (56,477 residents)
  • Over 65: 17.3% (39,802 residents)

What is the racial and ethnic makeup of Linn County?

The racial and ethnic makeup of Linn County is as follows:
  • White: 83.6% (192,362 residents)
  • Black or African American: 6% (13,735 residents)
  • American Indian and Alaska Native: 0.2% (507 residents)
  • Asian: 2.4% (5,504 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (53 residents)
  • Two or More Races: 6.5% (15,022 residents)
  • Other: 1.2% (2,821 residents)

What percentage of the population in Linn County are U.S.-born citizens?

U.S.-born citizens represent 93.8% of the population in Linn County.

How many housing units are there in Linn County?

There are 103,104 housing units in Linn County, reflecting a +1.1% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Linn County and what is the average household size?

Linn County has a total of 95,600 households, with an average of 2 people in each.

What is the median household income in Linn County?

Linn County has a median household income of $77,649, representing a +1.6% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Linn County?

The employment rate is 96.6% in Linn County, with a workforce of 120,795 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 76.3% (92,204 residents)
  • Blue-collar workers: 23.7% (28,591 residents)

Places of employment:
  • Self-employed: 8.2% (9,931 residents)
  • Private companies: 72.2% (87,212 residents)
  • Governmental workers: 11.9% (14,333 residents)
  • Not-for-profit companies: 7.7% (9,319 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025