Zip Area Code

Irondale, Missouri

Irondale, Missouri, in Washington County, has ZIP code 63648 and area code 573, with 235 as an overlay.

ZIP code
63648
Area codes
573, 235
Time zone
Central Time
Coordinates
37.8296, -90.6984

ZIP codes in Irondale

ZIP codePost officeCountyArea codes
63648IrondaleWashington County573, 235

Area codes for Irondale

  • Area code 573

    In service since January 7, 1996. Shares its area with 235. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 235

    In service since March 24, 2024. Shares its area with 573. 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

Irondale is in the Central Time zone.

Towns near Irondale