Philo, California
| Philo | |
|---|---|
| Vineyards in Philo at Roederer Estate in 2022. | |
| Coordinates: 39°03′57″N 123°26′42″W / 39.06583°N 123.44500°W | |
| Country | United States | 
| State | California | 
| County | Mendocino | 
| Area | |
|  • Total | 2.067 sq mi (5.35 km2) | 
| • Land | 2.067 sq mi (5.35 km2) | 
| • Water | 0 sq mi (0 km2) 0% | 
| Elevation | 331 ft (101 m) | 
| Population  (2020) | |
|  • Total | 319 | 
| Time zone | UTC-8 (Pacific (PST)) | 
| • Summer (DST) | UTC-7 (PDT) | 
| ZIP Code | 95466 | 
| Area code | 707 | 
| GNIS feature IDs | 1659380; 2628777 | 
Philo is a census-designated place in Mendocino County, California, United States. It is located 6 miles (10 km) northwest of Boonville, at an elevation of 331 feet (101 m). The population was 319 at the 2020 census.
Philo is located in Anderson Valley in western Mendocino County. Situated along Indian Creek as it flows into the Navarro River, Philo is the home of KZYX, the local public radio station. Two small specialty lumber mills in Philo are all that remain of a once vigorous timber economy in Anderson Valley. Philo is the heart of the Anderson Valley wine region.
The first post office opened in 1888. The ZIP Code is 95466. The community is inside area code 707.
Two versions of how Philo was named are current: first, that its founder Cornelius Prather named it after his favorite female cousin; second, that he named it for his former home at Philo, Illinois.