Zip Area Code

Montrose, California

Montrose, California, in Los Angeles County, has ZIP codes 91020 and 91021 and area code 818, with 747 as an overlay.

ZIP codes
91020, 91021
Area codes
818, 747
Time zone
Pacific Time
Coordinates
34.2089, -118.2274

ZIP codes in Montrose

ZIP codePost officeCountyArea codes
91020MontroseLos Angeles County818, 747
91021*MontroseLos Angeles County818, 747

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

Area codes for Montrose

  • Area code 818

    In service since January 7, 1984. Shares its area with 747. Local calls are dialed with 1 plus ten digits.

  • Area code 747

    In service since May 18, 2009. Shares its area with 818. Local calls are dialed with 1 plus ten digits.

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

Montrose is in the Pacific Time zone.

Towns near Montrose