Zip Area Code

Affton, Missouri

No ZIP code carries the name of Affton, Missouri, in St. Louis County; the nearest ZIP codes are 63123, 63125 and 63126, in area code 314, with 557 as an overlay.

Nearest ZIP
63123, 63125, 63126
Area codes
314, 557
Time zone
Central Time
Coordinates
38.5499, -90.3264

Nearest ZIP codes to Affton

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

ZIP codePost officeCountyArea codes
63123Saint LouisSt. Louis County314, 557
63125Saint LouisSt. Louis County314, 557
63126Saint LouisSt. Louis County314, 557

Area codes for Affton

  • 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

Affton is in the Central Time zone.

Towns near Affton