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Population Review

What is the least populated state in the US?

Wyoming is the least populated state with a population of 579,761, per Census ACS 5-Year estimates. Vermont and District of Columbia are also among the least populated.

Context

Despite small populations, low-population states have the same Senate representation as large states, giving residents outsized political influence per capita.

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Frequently Asked Questions

Wyoming is the least populated state with a population of 579,761, per Census ACS 5-Year estimates. Vermont and District of Columbia are also among the least populated.

Source: U.S. Census Bureau ACS, 2026.