Population of Chambersburg, Pennsylvania as of January 2026. How many people live in Chambersburg today?

The exact population of Chambersburg, Pennsylvania as of January 2026 is estimated at 21,903 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 Chambersburg.

Check out more data on population in Pennsylvania:

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