Linn County, Iowa Population 2021

Linn County, Iowa's estimated population is 228,592 with a growth rate of 0.41% in the past year according to the most recent United States census data. Linn County, Iowa is the 3rd largest county in Iowa. The 2010 Population was 211,705 and has seen a growth of 7.98% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
2021228,5929430.41%
2020227,6499430.42%
2019226,7069430.42%
2018225,7631,3840.62%
2017224,3792,1910.99%
2016222,1881,9170.87%
2015220,2712,1420.98%
2014218,1291,6410.76%
2013216,4881,0030.47%
2012215,4851,2780.60%
2011214,2072,5021.18%
2010211,70542,93825.44%
1990168,767-1,008-0.59%
1980169,7756,5624.02%
1970163,21326,31419.22%
1960136,89932,62531.29%
1950104,27415,13216.98%
194089,1426,8068.27%
193082,3368,33211.26%
192074,00413,28421.88%
191060,7205,3289.62%
190055,39210,08922.27%
189045,3038,06621.66%
188037,2376,15719.81%
187031,08012,13364.04%
186018,94713,503248.03%
18505,4444,071296.50%
18401,3730.00%
2021 Growth Rate
0.41%
County Website
State
Founded
1839
County Seat
2010 Population
211,705
Growth Since 2010
7.98%
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Linn County, Iowa Population Growth

Population by Race

Race Population Percentage
White197,04688.02%
Black or African American12,3895.53%
Two or More Races6,8283.05%
Asian5,0862.27%
Some Other Race1,7060.76%
American Indian and Alaska Native4930.22%
Native Hawaiian and Other Pacific Islander3130.14%
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Linn County, Iowa Population by Race

Linn County, Iowa Population Pyramid $2021

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Linn County, Iowa Median Age

37.7


Total

36.6


Male

38.9


Female

Linn County, Iowa Adults

There are 171,251 adults, (34,771 of whom are seniors) in Linn County, Iowa.

Linn County, Iowa Age Dependency

64

Age Dependency Ratio

25.5

Old Age Dependency Ratio

38.5

Child Dependency Ratio

Linn County, Iowa Sex Ratio

Female

113,482

50.69%

Male

110,379

49.31%

Linn County, Iowa Population by Age

Linn County, Iowa Renter vs Owner Occupied by Household Type

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Linn County, Iowa Household Types

Type Owner Renter
Married90.7%9.3%
Male73.8%26.2%
All73.8%26.2%
Non Family57.8%42.2%
Female52.1%47.9%

73.8%

Rate of Home Ownership

Linn County, Iowa Households and Families

Type Count Average Size Owned
All90,8772.4173.8
Married43,8803.0690.7
Non Family34,7381.2857.8
Female8,3323.2652.1
Male3,9273.373.8

3.02

Average Family Size

2.41

Average Household Size

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Linn County, Iowa Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2,5961.72%
9th to 12th Grade5,6943.78%
High School Graduate40,70627.04%
Some College32,45721.56%
Associates Degree19,21212.76%
Bachelors Degree35,19023.37%
Graduate Degree14,7009.76%
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Linn County, Iowa Educational Attainment by Sex (over 25)

Linn County, Iowa Educational Attainment by Race

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Race Total High School Bachelors
White134,861129,10045,632
Black6,4195,432989
Hispanic3,5262,711761
Asian3,3452,8131,777
2+ Races1,9381,745597
Other Race1,151816290
Native American18918920
Islander86869

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 53.12%.

Linn County, Iowa Educational Attainment by Race

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Name Average Male Female
Overall$43,079$51,846$36,275
Less Than 9th Grade$27,087$31,533$16,398
High School Graduate$33,136$40,069$26,204
Some College$39,849$48,571$32,481
Bachelors Degree$53,822$69,343$43,791
Graduate Degree$75,226$93,621$64,727

$43,079

Average Earnings

$51,846

Average Male

$36,275

Average Female

Linn County, Iowa Earnings by Educational Attainment

Linn County, Iowa Language by Age

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Linn County, Iowa Language

94.17% of Linn County, Iowa residents speak only English, while 5.83% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.92% of the population.

Linn County, Iowa Language

Linn County, Iowa Poverty by Race

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Name Total In Poverty Poverty Rate
White187,88415,4488.22%
Black11,7933,60630.58%
Multiple6,6011,60924.38%
Hispanic6,8441,27618.64%
Other1,67756333.57%
Asian4,9742104.22%
Islander28612242.66%
Native4844910.12%

10.20%

Overall Poverty Rate

9.12%

Male Poverty Rate

11.26%

Female Poverty Rate

Poverty in Linn County, Iowa

The race most likely to be in poverty in Linn County, Iowa is Islander, with 42.66% below the poverty level.

The race least likely to be in poverty in Linn County, Iowa is Asian, with 4.22% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.16%. Among those working part-time, it was 15.41%, and for those that did not work, the poverty rate was 17.09%.

Linn County, Iowa Poverty

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Name Poverty
Less Than 9th Grade26.81%
High School8.88%
Some College8.38%
Bachelors or Greater3.23%

Linn County, Iowa Poverty Rate by Education

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Rate Poverty
Female Unemployed43.87%
Male Unemployed27.18%
Female Employed6.60%
Male Employed4.34%

Linn County, Iowa Poverty Rate by Employment Status and Sex

Linn County, Iowa Income by Household Type

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Name Median Mean
Households$64,903$83,373
Families$85,516$102,158
Married Families$98,178$116,308
Non Families$39,513$50,314
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Income by Household Type

Linn County, Iowa Marital Status

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Marriage Rates

50.7%

Overall Marriage Rate

51.4%

Male Marriage Rate

49.9%

Female Marriage Rate

Linn County, Iowa Married by Age and Sex

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Linn County, Iowa Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Linn County, Iowa Marital Status by Race

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Linn County, Iowa Marital Status

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13,891

Number of Veterans

12,674

Male Veterans

1,217

Female Veterans

War Veterans
Vietnam4,749
First Gulf War2,793
Second Gulf War2,125
Korea1,295
World War II479

Linn County, Iowa Veterans by War

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Age Group Veterans
65 to 743,753
35 to 543,491
75+3,179
55 to 642,480
18 to 34988

Linn County, Iowa Veterans by Age

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Name Veterans % of Total
White13,3488.64%
Black3374.25%
Hispanic2375.30%
2+ Races1605.44%
Asian270.69%
Other Race191.44%

Linn County, Iowa Veterans by Race

Linn County, Iowa Veterans by Education

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4.47%

Veteran Poverty Rate

24.44%

Veteran Disability Rate

Linn County, Iowa Veterans by Education

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69.7%

Labor Force Participation

67.1%

Employment Rate

3.7%

Unemployment Rate

Linn County, Iowa Employment by Age

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Linn County, Iowa Employment by Race

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Linn County, Iowa Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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70.96%

Born in Linn County, Iowa

95.58%

Native Born

4.42%

Foreign Born

2.57%

Non Citizen

1.85%

Naturalized

Place of Birth

95.58% of Linn County, Iowa residents were born in the United States, with 70.96% having been born in Iowa. 2.57% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Linn County, Iowa Place of Birth

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources