Post Mountain is an unincorporated community and census-designated place (CDP) in Trinity County, California, United States. It is on the north side of California State Route 36, 68 miles (109 km) west of Red Bluff and 69 miles (111 km) east of U.S. Route 101 near Fortuna. Hayfork, the nearest post office, is 14 miles (23 km) to the north on California State Route 3. Its population is 3,032 as of the 2020 census. Post Mountain was first listed as a CDP prior to the 2020 census.

Post Mountain, California
Census-designated place
Post Mountain Show map of California Post Mountain Show map of the United States
Coordinates: 40°25′22″N 123°13′20″W
Country	United States
State	California
County	Trinity
Area [1]
• Total	32.15 km2 (12.41 sq mi)
• Land	32.15 km2 (12.41 sq mi)
• Water	0.0 km2 (0.0 sq mi)
Elevation [2]	995 m (3,264 ft)
Population  (2020)
• Total	3,032
• Density	94/km2 (240/sq mi)
Time zone	UTC-8 (Pacific (PST))
• Summer (DST)	UTC-7 (PDT)
ZIP Code	96041 (Hayfork)
Area code(s)	530
FIPS code	06-58456
GNIS feature ID	2804441[2]

References

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