Clayton, Missouri

Nearest ZIP codes to Clayton

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

Area codes for Clayton

• Area code 314

  In service since 1947. Shares its area with 557. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

• Area code 557

  In service since August 12, 2022. Shares its area with 314. 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

Clayton is in the Central Time zone.

Towns near Clayton

• Richmond Heights1.5 km (0.9 mi)
• University2.4 km (1.5 mi)
• Brentwood3.2 km (2.0 mi)
• Maplewood3.6 km (2.2 mi)
• Saint Louis3.8 km (2.4 mi)
• Pagedale4.4 km (2.7 mi)
• Hanley Hills4.6 km (2.9 mi)
• Wellston4.6 km (2.9 mi)