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Iowa population by year, 1990 to 2025

Iowa grew 16.5 percent since 1990 to 3.24 million in 2025, a record, but its rank slid from 30th to 32nd among the states.

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What the data shows

  • Iowa: 2.78M in 1990, 3.24M in 2025.

About this chart

Iowa has never been a fast-growing state, but it has rarely stood still. The population climbed from 2,779,769 in 1990 to 3,238,387 in 2025, a gain of about 459,000 people or 16.5 percent, and the 2025 figure is the highest in the series. Gains were 10.6 percent after 2000 and 6.1 percent after 2010.

Iowa held 30th place among the 50 states in 1990, 2000 and 2010, then dropped to 32nd by 2025 as faster-growing states such as Utah and Nevada passed it. It added about 47,000 residents between 2020 and 2025. The data are Census Bureau resident estimates for July 1 of each year.

The data

Source: U.S. Census Bureau population estimates, July 1 (vintages 1999, 2000–2010 intercensal, 2020 and 2025), resident population of Iowa, millions. Retrieved November 4, 2026.

Population of Iowa, Residents, 1990 to 2025, 1990–2025
DateIowa
19902.78M
19912.79M
19922.81M
19932.82M
19942.83M
19952.84M
19962.85M
19972.85M
19982.86M
19992.87M
20002.93M
20012.93M
20022.93M
20032.94M
20042.95M
20052.96M
20062.98M
20073.00M
20083.02M
20093.03M
20103.05M
20113.07M
20123.08M
20133.09M
20143.11M
20153.12M
20163.13M
20173.14M
20183.15M
20193.16M
20203.19M
20213.20M
20223.20M
20233.22M
20243.23M
20253.24M

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Frequently asked questions

What is the population of Iowa?

Iowa had about 3.24 million residents (3,238,387) in July 2025, according to Census Bureau estimates. That ranks 32nd among the 50 states.

Where does Iowa rank by population?

Iowa ranks 32nd as of 2025. It was 30th in 1990, 2000 and 2010, so it has slipped two places even though its population kept rising.

How much has Iowa grown since 2000?

Iowa is up 10.6 percent since 2000, from about 2.93 million to 3.24 million. Growth since 2010 has been 6.1 percent.

Where does this data come from?

U.S. Census Bureau population estimates, July 1 (vintages 1999, 2000–2010 intercensal, 2020 and 2025), resident population of Iowa, millions. Retrieved November 4, 2026. You can download the full table as a CSV from this page.

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