Population of Longmont

The population in Longmont for 2026 is 89 919. Longmont is one of 1561 cities in United States (US) and ranks 309 in the United States (US) population. Longmont city population data has been obtained from public sources. On the Population HUB website you can find out the number of people in any of the regions of the Earth.

Population - Longmont

89 919 people

Flag of United States (US) Data for January 2026

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