Rock Island Arsenal, Illinois

Nearest ZIP codes to Rock Island Arsenal

These are the ZIP codes nearest to Rock Island Arsenal, each listed with the post office it is named after.

Area codes for Rock Island Arsenal

• Area code 309

  In service since 1957. Shares its area with 861. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 861

  In service since February 24, 2023. Shares its area with 309. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

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

Rock Island Arsenal is in the Central Time zone.

Towns near Rock Island Arsenal

• Rock Island2.9 km (1.8 mi)
• Moline3.4 km (2.1 mi)
• East Moline9 km (5.6 mi)
• Campbell's Island9.5 km (5.9 mi)
• Milan10.5 km (6.5 mi)
• Silvis10.7 km (6.6 mi)
• Coal Valley11 km (6.8 mi)
• Hampton11.7 km (7.3 mi)