Post Mountain, California
No ZIP code carries the name of Post Mountain, California, in Trinity County; the nearest ZIP code is 96041, in area code 530, with 837 as an overlay.
- Nearest ZIP
- 96041
- Area codes
- 530, 837
- County
- Trinity County
- State
- California
- Time zone
- Pacific Time
- Coordinates
- 40.4159, -123.2316
Nearest ZIP codes to Post Mountain
This is the ZIP code nearest to Post Mountain, each listed with the post office it is named after.
Area codes for Post Mountain
- Area code 530
In service since November 1, 1997. Shares its area with 837. Local calls are dialed with 1 plus ten digits.
- Area code 837
In service since January 31, 2025. Shares its area with 530. 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
Post Mountain is in the Pacific Time zone.
Towns near Post Mountain
Local numbers in area code 530
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- (530) 858-1789Redding, CA$59View & buy
- (530) 858-1876Redding, CA$59View & buy
- (530) 858-1987Redding, CA$59View & buy
- (530) 860-8768Oroville, CA$59View & buy
- (530) 860-9878Oroville, CA$59View & buy
- (530) 870-9878Marysville, CA$59View & buy
- (530) 875-6788Chico, CA$59View & buy
- (530) 880-2108Orland, CA$59View & buy
- (530) 880-2348Orland, CA$59View & buy
- (530) 880-2789Orland, CA$59View & buy
- (530) 880-2876Orland, CAAlso spells BURN$59View & buy
- (530) 880-3218Orland, CA$59View & buy
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