United States › Iowa › Polk County COUNTY · 2020 ACS
Polk County Iowa · 492,401 residents · 572 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2010 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2021 ACS 2022 ACS 2023 ACS 2024 ACS
The short version
With 492,401 people, Polk County is a county in Iowa. The population is up 31% since 2000. Getting to work takes 20 minutes on average. The typical home is worth $190,400, having more than doubled since 2000. About 38% of adults have finished a four-year degree. Households earn $69,747 at the median, near the US median.
At a glance
Wealthier
above the US median
US median: $66,278
Younger
median age 36.0
US median: 38.8
More educated
38% hold a bachelor's degree
US average: 33%
Less affordable
home values up 27%, inflation adjusted
US median home: $265,253
Section 01
Population & growth from 34.4 in 2000
US average: 38.8
Population, 1990 – 2024
310K 362K 415K 468K 521K 1990 2000 2010 2020 2024 Polk County Age distribution, 2020
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Section 02
Income & economy $69,747
+1%inflation adjusted, since 2000
from $46,116 in 2000
US average: $66,278
from $23,654 in 2000
US average: $35,364
Households earning $100K+
from 34.5% in 2009
US average: 43.9%
from 7.9% in 2000
US average: 12.8%
Workforce by industry, 2020
Public administration 13.7%
Professional, scientific, technical 4.1%
Transportation & warehousing 3.3%
Arts, entertainment, food 2.1%
Agriculture, forestry, fishing 1.1%
Education & health services 0.6%
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$190,400
+27%inflation adjusted, since 2000
from $100,100 in 2000
US average: $265,253
$938
+9%inflation adjusted, since 2000
from $574 in 2000
US average: $1,124
from 68.8% in 2000
34.3% rent
from 2.39 people in 2009
US average: 2.61
from 2.6 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity 2000
White, non-Hispanic 86.4%(323,785)
Hispanic / Latino 4.4%(16,490)
2020
White, non-Hispanic 73.6%(362,260)
Hispanic / Latino 9.8%(48,055)
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins
Detailed origins & ancestry Hispanic origin
+ 9 more hispanic origin groups with data Asian origin
+ 5 more asian origin groups with data Ancestry
+ 49 more ancestry groups with data from 29.7% in 2000
US average: 32.9%
High school or higher
from 88.3% in 2000
US average: 88.5%
from 8.7% in 2000
US average: 12.7%
Section 06
Commute & transportation from 10.7 min in 2000
US average: 26.9
from 82.0% in 2009
US average: 75.1%
from 5.9% in 2009
US average: 8.4%
Section 07
Work & employment from 5.8% in 2011
US average: 5.4%
from 73.8% in 2011
US average: 63.4%
Women 20-64 in the labor force
US average: 73.3%
from 37.8% in 2009
US average: 39.3%
Section 08
People & community from 7.0% in 2009
US average: 13.5%
from 8.3% in 2013
US average: 8.8%
Computer in household
US average: 91.9%
Marital status (2024)
Men 15+
Never married 36.6%(72,793)
Women 15+
Never married 31.4%(63,659)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 8.3% in 2013
US average: 8.8%
Direct-purchase
US average: 13.7%
VA health care
US average: 2.3%
Any private
US average: 68.1%
Any public
US average: 35.2%
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, 2020
Gulf War (2001 or later) 20.4%(4,738)
Gulf War (1990s) 20.8%(4,815)
Share of the 23,183 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.
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Drill deeper
Places similar to Polk County Head to head
Compare Polk County to nearby counties POLK COUNTY VS
Dallas County
Income $102,379 +47%
Home value $355,600 +87%
Population 118,457 −77%
SEE FULL COMPARISON →
POLK COUNTY VS
Warren County
Income $94,588 +36%
Home value $269,600 +42%
Population 57,331 −89%
SEE FULL COMPARISON →
POLK COUNTY VS
Story County
Income $69,685 same
Home value $258,700 +36%
Population 101,291 −80%
SEE FULL COMPARISON →
POLK COUNTY VS
Jasper County
Income $71,311 +2%
Home value $186,300 −2%
Population 38,153 −93%
SEE FULL COMPARISON →
Frequently asked
How many people live in Polk County, Iowa? Polk County, Iowa has about 492,401 residents according to the 2020 American Community Survey.
What is the median household income in Polk County, Iowa? The typical household in Polk County, Iowa earns about $69,747 a year. Half of households make more than that, and half make less.
Is Polk County, Iowa expensive? In Polk County, Iowa, the median home is worth about $190,400, and the typical rent is about $938 a month.
How educated are people in Polk County, Iowa? About 37.6% of adults age 25 and over in Polk County, Iowa hold a bachelor's degree or higher.
What is the poverty rate in Polk County, Iowa? About 10.4% of people in Polk County, Iowa live below the federal poverty line.
Has Polk County, Iowa grown since 1990? Yes, Polk County, Iowa has grown since 1990. The population has added about 165,261 residents, a change of about 51 percent over that period.
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