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Idaho population by year, 1990 to 2025

Idaho doubled from 1.01 million in 1990 to 2.03 million in 2025, one of the fastest-growing states, rising from 42nd to 37th.

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What the data shows

  • Idaho: 1.01M in 1990, 2.03M in 2025 (2.0× higher).

About this chart

Idaho is one of a handful of states whose population has doubled since 1990. The estimate rose from 1,011,882 to 2,029,733, a gain of about 101 percent, and the state passed 2 million in 2024. Growth is still fast: 56.2 percent since 2000 and 29.2 percent since 2010. Only Nevada, Arizona and Utah grew by a larger percentage since 1990.

The latest years are among the strongest. Idaho added about 180,000 residents between 2020 and 2025, a 9.8 percent increase in five years. That pushed it from 42nd among the 50 states in 1990 to 39th in 2000 and 2010, and 37th in 2025. The chart uses 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 Idaho, millions. Retrieved November 4, 2026.

Population of Idaho, Residents, 1990 to 2025, 1990–2025
DateIdaho
19901.01M
19911.04M
19921.07M
19931.10M
19941.14M
19951.17M
19961.19M
19971.21M
19981.23M
19991.25M
20001.30M
20011.32M
20021.34M
20031.36M
20041.39M
20051.43M
20061.47M
20071.51M
20081.53M
20091.55M
20101.57M
20111.58M
20121.60M
20131.61M
20141.63M
20151.65M
20161.68M
20171.72M
20181.75M
20191.79M
20201.85M
20211.91M
20221.94M
20231.97M
20242.00M
20252.03M

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Frequently asked questions

What is the population of Idaho?

Idaho had about 2.03 million residents (2,029,733) in July 2025, according to Census Bureau estimates. That ranks 37th among the 50 states.

Has Idaho's population doubled?

Yes. Idaho had 1,011,882 residents in 1990 and 2,029,733 in 2025, a gain of about 101 percent. It first topped 2 million in 2024.

How fast is Idaho growing?

Idaho is up 29.2 percent since 2010 and 9.8 percent since 2020. Both rates are among the highest of any state in this series.

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 Idaho, millions. Retrieved November 4, 2026. You can download the full table as a CSV from this page.

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