St. Charles, Illinois

Nearest ZIP codes to St. Charles

These are the ZIP codes nearest to St. Charles, each listed with the post office it is named after.

Area codes for St. Charles

• Area code 630

  In service since August 3, 1996. Shares its area with 331. Local calls are dialed with 1 plus ten digits.

• Area code 331

  In service since October 7, 2007. Shares its area with 630. Local calls are dialed with 1 plus ten digits.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

St. Charles is in the Central Time zone.

Towns near St. Charles

• Saint Charles3.6 km (2.2 mi)
• Geneva3.7 km (2.3 mi)
• Wayne6 km (3.7 mi)
• Batavia7.9 km (4.9 mi)
• South Elgin8.7 km (5.4 mi)
• Lafox9.3 km (5.8 mi)
• Wasco9.3 km (5.8 mi)
• Campton Hills9.4 km (5.8 mi)