Philo, California

Philo
Census-designated place
Vineyards in Philo at Roederer Estate in 2022.
Vineyards in Philo at Roederer Estate in 2022.
Philo is located in California
Philo
Philo
Location within California
Philo is located in the United States
Philo
Philo
Location within the United States
Coordinates: 39°03′57″N 123°26′42″W / 39.06583°N 123.44500°W / 39.06583; -123.44500
Country United States
State California
CountyMendocino
Area
[1]
 • Total
2.067 sq mi (5.35 km2)
 • Land2.067 sq mi (5.35 km2)
 • Water0 sq mi (0 km2)  0%
Elevation
[2]
331 ft (101 m)
Population
 (2020)[3]
 • Total
319
 • Density154/sq mi (59.6/km2)
Time zoneUTC-8 (Pacific (PST))
 • Summer (DST)UTC-7 (PDT)
ZIP Code
95466
Area code707
GNIS feature IDs1659380;[2] 2628777[4]

Philo is a census-designated place[5] in Mendocino County, California, United States.[2] It is located 6 miles (10 km) northwest of Boonville,[6] at an elevation of 331 feet (101 m).[2] The population was 319 at the 2020 census.[3]

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,[7] 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.[6] 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.[6]

Geography

Philo is located at geographical coordinates 39° 3′ 57″ North, 123° 26′ 42″ West. California State Route 128 leads southeast (up the valley) 6 miles (10 km) to Boonville and northwest (downriver) 23 miles (37 km) to State Route 1 near Navarro Beach on the Pacific Ocean.

According to the United States Census Bureau, the CDP covers an area of 2.1 square miles (5.4 km2), all land.[1]

Demographics

Historical population
CensusPop.Note%±
2010349—
2020319−8.6%
U.S. Decennial Census[8]
1850–1870[9][10] 1880-1890[11]
1900[12] 1910[13] 1920[14]
1930[15] 1940[16] 1950[17]
1960[18] 1970[19] 1980[20]
1990[21] 2000[22] 2010[23]

Philo first appeared as a census designated place in the 2010 U.S. census.[23]

The 2020 United States census reported that Philo had a population of 319. The population density was 154.3 inhabitants per square mile (59.6/km2). The racial makeup of Philo was 110 (34.5%) White, 0 (0.0%) African American, 8 (2.5%) Native American, 0 (0.0%) Asian, 0 (0.0%) Pacific Islander, 107 (33.5%) from other races, and 94 (29.5%) from two or more races. Hispanic or Latino of any race were 209 persons (65.5%).[24]

The whole population lived in households. There were 113 households, out of which 43 (38.1%) had children under the age of 18 living in them, 47 (41.6%) were married-couple households, 7 (6.2%) were cohabiting couple households, 16 (14.2%) had a female householder with no partner present, and 43 (38.1%) had a male householder with no partner present. 38 households (33.6%) were one person, and 12 (10.6%) were one person aged 65 or older. The average household size was 2.82.[24] There were 66 families (58.4% of all households).[25]

The age distribution was 68 people (21.3%) under the age of 18, 28 people (8.8%) aged 18 to 24, 92 people (28.8%) aged 25 to 44, 84 people (26.3%) aged 45 to 64, and 47 people (14.7%) who were 65 years of age or older. The median age was 39.8 years. For every 100 females, there were 151.2 males.[24]

There were 129 housing units at an average density of 62.4 units per square mile (24.1 units/km2), of which 113 (87.6%) were occupied. Of these, 53 (46.9%) were owner-occupied, and 60 (53.1%) were occupied by renters.[24]

Education

Students in Philo attend Anderson Valley Elementary School and Anderson Valley Junior-Senior High School. Both are operated by the Anderson Valley Unified School District and are located in Boonville.

Notable people

Politics

In the state legislature, Philo is in the 2nd senatorial district, represented by Democrat Mike McGuire,[26] and the 2nd Assembly district, represented by Democrat Chris Rogers.[27]

Federally, Philo is in California's 2nd congressional district, represented by Democrat Jared Huffman.[28]

See also

Notes and references

  1. 1 2 "2021 U.S. Gazetteer Files: California". United States Census Bureau. Retrieved August 24, 2022.
  2. 1 2 3 4 U.S. Geological Survey Geographic Names Information System: Philo
  3. 1 2 "P1. Race – Philo CDP, California: 2020 DEC Redistricting Data (PL 94-171)". U.S. Census Bureau. Retrieved August 24, 2022.
  4. ↑ U.S. Geological Survey Geographic Names Information System: Philo Census Designated Place
  5. ↑ U.S. Geological Survey Geographic Names Information System: Philo, California
  6. 1 2 3 Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Clovis, California: Word Dancer Press. p. 122. ISBN 1-884995-14-4.
  7. ↑ "KZYX - Mendocino County Public Broadcasting, listener support community radio". www.kzyx.org. Retrieved April 23, 2018.
  8. ↑ "Decennial Census by Decade". United States Census Bureau.
  9. ↑ "1870 Census of Population - Population of Civil Divisions less than Counties - California - Almeda County to Sutter County" (PDF). United States Census Bureau.
  10. ↑ "1870 Census of Population - Population of Civil Divisions less than Counties - California - Tehama County to Yuba County" (PDF). United States Census Bureau.
  11. ↑ "1890 Census of Population - Population of California by Minor Civil Divisions" (PDF). United States Census Bureau.
  12. ↑ "1900 Census of Population - Population of California by Counties and Minor Civil Divisions" (PDF). United States Census Bureau.
  13. ↑ "1910 Census of Population - Supplement for California" (PDF). United States Census Bureau. Archived from the original (PDF) on August 23, 2024. Retrieved October 23, 2025.
  14. ↑ "1920 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau.
  15. ↑ "1930 Census of Population - Number and Distribution of Inhabitants - California" (PDF). United States Census Bureau.
  16. ↑ "1940 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau.
  17. ↑ "1950 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau.
  18. ↑ "1960 Census of Population - General population Characteristics - California" (PDF). United States Census Bureau.
  19. ↑ "1970 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau.
  20. ↑ "1980 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau.
  21. ↑ "1990 Census of Population - Population and Housing Unit Counts - California" (PDF). United States Census Bureau.
  22. ↑ "2000 Census of Population - Population and Housing Unit Counts - California" (PDF). United States Census Bureau.
  23. 1 2 "2010 Census of Population - Population and Housing Unit Counts - California" (PDF). United States Census Bureau.
  24. 1 2 3 4 "Philo CDP, California; DP1: Profile of General Population and Housing Characteristics - 2020 Census of Population and Housing". US Census Bureau. Retrieved May 31, 2025.
  25. ↑ "Philo CDP, California; P16: Household Type - 2020 Census of Population and Housing". US Census Bureau. Retrieved May 31, 2025.
  26. ↑ "Senators". State of California. Retrieved March 10, 2013.
  27. ↑ "Members Assembly". State of California. Retrieved March 2, 2013.
  28. ↑ "California's 2nd Congressional District - Representatives & District Map". Civic Impulse, LLC. Retrieved March 1, 2013.
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