COUNTY · 1990 CENSUS

Grundy County

Iowa · 12,029 residents · 502 sq mi

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The short version

With 12,029 people, Grundy County is a county in Iowa. At a median age of 38.9, this is an older place than the country as a whole. Median home value sits at $37,700. Owners hold 74% of the housing stock. 12% of adults hold a bachelor's degree or higher. Median rent is $271 a month.

At a glance

Lower income

below the US median

US median: $30,130

Older

median age 38.9

US median: 33.0

Less educated

12% hold a bachelor's degree

US average: 20%

More affordable

home values down 33%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

12,029

−3%vs 2000

vs 12,369 in 2000

1990 – 2025

Median age

38.9

−5%vs 2000

vs 40.8 in 2000

US average: 33.0

Land area

502 sq mi

Population, 1990 – 2024

202412K

Age distribution, 1990

Under 56.4%(775)

US avg: 7.3%

5 to 96.9%(836)

US avg: 7.3%

10 to 148%(961)

US avg: 6.9%

15 to 196.1%(728)

US avg: 7.1%

20 to 243.9%(470)

US avg: 7.5%

25 to 3413.1%(1,579)

US avg: 17.5%

35 to 4413.3%(1,601)

US avg: 15.1%

45 to 5412%(1,444)

US avg: 10.2%

55 to 6410.2%(1,225)

US avg: 8.5%

65 to 7410.7%(1,286)

US avg: 7.3%

75 to 846.9%(832)

US avg: 4%

85 and over2.4%(292)

US avg: 1.2%

BAR + DOT: THIS PLACE · TICK: US AVERAGE

Section 02

Income & economy

Median household income

$26,314

−12%inflation adjusted, since 2000

vs $39,396 in 2000

US average: $30,130

1990 – 2024

Per capita income

$12,898

−33%vs 2000

vs $19,142 in 2000

US average: $14,340

Poverty rate

8.3%

+3.7 ptsvs 2000

vs 4.6% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$37,700

−33%inflation adjusted, since 2000

vs $74,200 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$271

−5%inflation adjusted, since 2000

vs $376 in 2000

US average: $450

Owner-occupied

74.4%

−5.5 ptsvs 2000

vs 79.9% in 2000

25.6% rent

Section 04

Race & ethnicity

2000

White, non-Hispanic98.6%(12,197)

Black0.1%(10)

Hispanic / Latino0.6%(72)

Asian0.3%(35)

Other0%

1990

White, non-Hispanic99.6%(11,979)

Black0.1%(9)

Hispanic / Latino0.2%(30)

Asian0.2%(24)

Other0.1%(17)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin

Mexican1%(127)

South American0.3%(33)

Chilean0.3%(33)

Puerto Rican0.2%(20)

Central American0.1%(17)

Guatemalan0.1%(17)

Asian origin

Chinese0.2%(20)

Korean0%(6)

Bangladeshi0%(6)

Nepalese0%(4)

Japanese0%(1)

Filipino0%(1)

Vietnamese0%(1)

Ancestry

German44.2%(5,469)

Irish9.7%(1,198)

English8.5%(1,058)

American8%(994)

Norwegian4%(491)

Dutch2.7%(331)

Czech1.9%(240)

Scottish1.7%(210)

Danish1.7%(208)

Swedish1.4%(172)

French1.3%(161)

Scotch-Irish0.8%(97)

+ 18 more ancestry groups with data

Italian0.8%(96)

Polish0.7%(81)

Arab0.4%(52)

Welsh0.4%(44)

Canadian0.3%(37)

Palestinian0.3%(35)

Belgian0.3%(32)

Subsaharan African0.2%(24)

British0.2%(20)

Portuguese0.1%(11)

Brazilian0%(6)

Swiss0%(6)

Australian0%(4)

Bulgarian0%(4)

Hungarian0%(4)

Russian0%(3)

Austrian0%(2)

French Canadian0%(2)

RANKED:Largest German population · Largest Irish population · Largest English population · Largest American population · Largest Norwegian population

Section 05

Education

Bachelor's degree or higher

12.3%

−4.9 ptsvs 2000

vs 17.2% in 2000

US average: 20.3%

High school or higher

79.5%

−7.0 ptsvs 2000

vs 86.5% in 2000

US average: 75.2%

Graduate degree

2.9%

−1.6 ptsvs 2000

vs 4.5% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

28.2 min

+104%vs 2000

vs 13.8 min in 2000

US average: 21.9

Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)

Men 15+

Never married26.9%(1,338)

Married61.5%(3,056)

Widowed3.5%(172)

Divorced8.2%(407)

Women 15+

Never married20%(1,008)

Married60.6%(3,053)

Widowed10.4%(522)

Divorced9%(452)

SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024

Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

Uninsured

3.8%

−2.0 ptssince 2013

from 5.8% in 2013

US average: 8.4%

Employer-based

63.0%

−1.5 ptssince 2020

from 64.5% in 2020

US average: 54.8%

Direct-purchase

17.7%

−1.3 ptssince 2020

from 19.0% in 2020

US average: 13.8%

Medicare

21.3%

Unchangedsince 2020

from 21.3% in 2020

US average: 18.4%

Medicaid

13.9%

+3.1 ptssince 2020

from 10.8% in 2020

US average: 20.9%

VA health care

2.2%

+0.1 ptssince 2020

from 2.1% in 2020

US average: 2.2%

Any private

77.5%

−4.3 ptssince 2020

from 81.8% in 2020

US average: 67.1%

Any public

33.8%

+2.9 ptssince 2020

from 30.9% in 2020

US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024

Gulf War (2001 or later)19.9%(111)

US avg: 26.4%

Gulf War (1990s)20.6%(115)

US avg: 24.3%

Vietnam era32.6%(182)

US avg: 33.1%

Korean War2.9%(16)

US avg: 4.5%

World War II0%(0)

US avg: 1%

Share of the 558 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE

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