Population of Decatur, Illinois as of June 2024. How many people live in Decatur today?

USA / Illinois / Decatur

The exact population of Decatur, Illinois as of June 2024 is estimated at 70,522 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 Decatur.

Population of Decatur, IL

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This population of Decatur IL is provided by US bureau of statistics.
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