Share of the population by age and sex, five-year groups

Population of Iowa, 2010–2025 · click to pick a year
Estimates up to 2019 are built on the 2010 Census, those from 2020 on the 2020 Census. A line that steps up or down between 2019 and 2020 reflects this re-basing, not a sudden change in population.

Year

-5 -1   2014  +1 +5

3,110,643 people lived in Iowa on July 1, 2014: the 30th-largest population among the 50 states and the District of Columbia. The median age was 37.9 years (United States: 37.7); children under 15 (19.5%) clearly outnumber residents 65 and older (15.7%): a relatively young population. There were 98.6 men for every 100 women. Since 2010 the population has grown by 2.0%. Source: U.S. Census Bureau, Population Estimates Program, Vintage 2020 estimates (resident population on July 1; public domain). Median age, shares, dependency ratios and rankings are calculated by PopulationPyramid.net from these estimates; the Census Bureau does not endorse this site.

Key indicators, 2014
Population
3,110,643
Rank by population
30th of 51
Median age
37.9
Men per 100 women
98.6
Under 15
19.5%
15–64
64.8%
65 and over
15.7%
Child dependency
30.1
Old-age dependency
24.3
Change since 2010
+2.0%
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2014
AgeMenWomenTotalShare
0-4100,40096,195196,5956.3%
5-9105,683100,957206,6406.6%
10-14104,01099,346203,3566.5%
15-19109,691104,283213,9746.9%
20-24121,020112,922233,9427.5%
25-2998,60793,086191,6936.2%
30-34102,18498,154200,3386.4%
35-3992,99489,932182,9265.9%
40-4490,89389,173180,0665.8%
45-4994,58793,225187,8126.0%
50-54108,075109,269217,3447.0%
55-59107,125108,256215,3816.9%
60-6494,90995,923190,8326.1%
65-6972,55676,918149,4744.8%
70-7451,21358,448109,6613.5%
75-7937,96047,57385,5332.7%
80-8426,86039,28766,1472.1%
85+25,98252,94778,9292.5%
How Iowa compares with similar-sized states, 2014
RankStateResidentsRelative
27 Oregon 3,965,447
28 Oklahoma 3,879,187
29 Connecticut 3,595,697
30 Iowa 3,110,643
31 Mississippi 2,991,892
32 Arkansas 2,968,759
33 Utah 2,938,327
Frequently asked questions about Iowa's population
What is the population of Iowa?
Iowa had an estimated 3,110,643 residents on July 1, 2014, according to the U.S. Census Bureau, Population Estimates Program. That ranks 30th among the 51 states and the District of Columbia.
What is the median age in Iowa?
The median age in Iowa was 37.9 years in 2014, the 26th oldest of the 51 states and DC. That is 0.2 years older than the national median of 37.7.
How many people in Iowa are 65 or older?
About 489,744 residents of Iowa (15.7%) were 65 or older in 2014, against 19.5% under 15 and 64.8% aged 15 to 64.
What does the population pyramid of Iowa show?
In 2014, Iowa: children under 15 (19.5%) clearly outnumber residents 65 and older (15.7%): a relatively young population. There were 98.6 men for every 100 women.
How fast is the population of Iowa changing?
The population of Iowa grew by 2.0% between 2010 and 2014, and by 0.5% in the last year.
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