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Montana population by year, 1990 to 2025

Montana grew 43 percent from 799,824 in 1990 to 1.14 million in 2025, passing 1 million in 2012 and edging up to 43rd among the states.

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What the data shows

  • Montana: 0.80M in 1990, 1.15M in 2025.

About this chart

Montana crossed 1 million residents in 2012 and has kept going. The estimate rose from 799,824 in 1990 to 1,144,694 in 2025, a gain of about 345,000 people or 43 percent. Growth is picking up rather than fading: Montana added about 57,500 residents between 2020 and 2025, a 5.3 percent increase in five years.

That pace has lifted it a notch in the rankings. Montana was 44th among the 50 states in 1990, 2000 and 2010, and 43rd in 2025. It is up 26.7 percent since 2000 and 15.5 percent since 2010. The figures 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 Montana, millions. Retrieved November 4, 2026.

Population of Montana, Residents, 1990 to 2025, 1990–2025
DateMontana
19900.80M
19910.81M
19920.82M
19930.84M
19940.86M
19950.87M
19960.88M
19970.88M
19980.88M
19990.88M
20000.90M
20010.91M
20020.91M
20030.92M
20040.93M
20050.94M
20060.95M
20070.97M
20080.98M
20090.98M
20100.99M
20111.00M
20121.00M
20131.01M
20141.02M
20151.03M
20161.04M
20171.05M
20181.06M
20191.07M
20201.09M
20211.11M
20221.12M
20231.13M
20241.14M
20251.15M

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Frequently asked questions

What is the population of Montana?

Montana had about 1.14 million residents (1,144,694) in July 2025, according to Census Bureau estimates. That ranks 43rd among the 50 states.

When did Montana pass 1 million people?

Montana's estimate was 0.998 million in 2011 and 1.004 million in 2012, so it passed 1 million in 2012. It had 990,730 residents in 2010 and 1.14 million in 2025.

How fast is Montana growing?

Montana is up 26.7 percent since 2000 and 15.5 percent since 2010. It added about 57,500 people between 2020 and 2025.

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

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