St. Jacob, Illinois

Nearest ZIP codes to St. Jacob

This is the ZIP code nearest to St. Jacob, each listed with the post office it is named after.

Area codes for St. Jacob

• Area code 618

  In service since 1947. Shares its area with 730. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 730

  In service since July 7, 2023. Shares its area with 618. 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

St. Jacob is in the Central Time zone.

Towns near St. Jacob

• Saint Jacob2.9 km (1.8 mi)
• Marine6.9 km (4.3 mi)
• Highland8.9 km (5.5 mi)
• Troy9.4 km (5.8 mi)
• Lebanon12.9 km (8.0 mi)
• Summerfield13.5 km (8.4 mi)
• Grantfork14.7 km (9.1 mi)
• Trenton15.1 km (9.4 mi)