Population of Wilmington, Illinois as of October 2025. How many people live in Wilmington today?

The exact population of Wilmington, Illinois as of October 2025 is estimated at 5,664 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 Wilmington.

Check out more data on population in Illinois:

• Population of Aurora
• Population of Joliet
• Population of Bloomington
• Population of Evanston
• Population of Bolingbrook
• Population of Des Plaines
• Population of Tinley Park
• Population of Plainfield
• Population of Belleville
• Population of Carol Stream
• Population of Wheeling
• Population of Oswego
• Population of Glendale Heights
• Population of Gurnee
• Population of Lake in the Hills
• Population of Wilmette
• Population of Chicago Heights