Zip Area Code

Florissant, Missouri

Florissant, Missouri, in St. Louis County, has ZIP codes 63031, 63032, 63033 and 63034 and area code 314, with 557 as an overlay.

ZIP codes
63031, 63032, 63033, 63034
Area codes
314, 557
Time zone
Central Time
Coordinates
38.7684, -90.3360

ZIP codes in Florissant

ZIP codePost officeCountyArea codes
63031FlorissantSt. Louis County314, 557
63032*FlorissantSt. Louis County314, 557
63033FlorissantSt. Louis County314, 557
63034FlorissantSt. Louis County314, 557

* No mapped delivery area: P.O. boxes or a single organization. Area codes are those of the nearest ZIP code area.

Area codes for Florissant

  • 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

Florissant is in the Central Time zone.

Towns near Florissant