Population of Sidney, Montana as of August 2025. How many people live in Sidney today?

USA / Montana / Sidney

The exact population of Sidney, Montana as of August 2025 is estimated at 6,112 residents. Please note: this figure is an estimate and may slightly change as people get born and pass away, it also depends on migration to/from Sidney.

City: Sidney, MT

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Check out more data on population in Montana:

Population of Missoula
Population of Helena
Population of Helena Valley Southeast
Population of Miles City
Population of Hamilton

This population of Sidney MT is provided by US bureau of statistics.
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