Alleghany, California

Alleghany
census-designated place
Main Street in Alleghany
Main Street in Alleghany
Alleghany is located in California
Alleghany
Alleghany
Location within the state of California
Coordinates: 39°28′00″N 120°50′28″W / 39.46667°N 120.84111°W / 39.46667; -120.84111
Country United States
State California
CountySierra
Area
[1]
 • Total
0.35 sq mi (0.90 km2)
 • Land0.35 sq mi (0.90 km2)
 • Water0 sq mi (0.00 km2)  0%
Elevation
[2]
4,229 ft (1,289 m)
Population
 (2020)
 • Total
30
 • Density85.9/sq mi (33.17/km2)
Time zoneUTC-8 (Pacific (PST))
 • Summer (DST)UTC-7 (PDT)
FIPS code06-00982
GNIS feature ID2582931
U.S. Geological Survey Geographic Names Information System: Alleghany, California

Alleghany is a small census-designated place in Sierra County, California, United States[2] in the Sierra Nevada. It is situated in the Gold Country and continues to be a significant locale for gold mining. The Sixteen To One Mine has been in operation since the days of the California Gold Rush. The town is 20 miles (32 km) from the nearest highway (California State Route 49) and consists largely of a single main street. The town is home to a post office, a bar, and a mining museum. The population was 30 at the 2020 census.

The community was named in 1859 for the Alleghany Tunnel mine that fueled the growth of the town when it struck gold four years earlier. The mine itself was named for the Allegheny River.[3]

Geography

According to the United States Census Bureau, the CDP covers an area of 0.3 square mile (0.9 km2), all land.

Demographics

Historical population
CensusPop.Note%±
201058—
202030−48.3%
U.S. Decennial Census[4]
1860–1870[5][6] 1880-1890[7]
1900[8] 1910[9] 1920[10]
1930[11] 1940[12] 1950[13]
1960[14][15] 1970[16] 1980[17]
1990[18] 2000[19] 2010[20]

Alleghany first appeared as a census designated place in the 2010 U.S. census.[20]

Racial and ethnic composition

Alleghany CDP, California – Racial and ethnic composition
Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.
Race / Ethnicity (NH = Non-Hispanic) Pop 2010[21] Pop 2020[22] % 2010 % 2020
White alone (NH) 57 23 98.28% 76.67%
Black or African American alone (NH) 0 0 0.00% 0.00%
Native American or Alaska Native alone (NH) 0 0 0.00% 0.00%
Asian alone (NH) 0 0 0.00% 0.00%
Native Hawaiian or Pacific Islander alone (NH) 0 0 0.00% 0.00%
Other race alone (NH) 0 2 0.00% 6.67%
Mixed race or Multiracial (NH) 0 3 0.00% 10.00%
Hispanic or Latino (any race) 1 2 1.72% 6.67%
Total 58 30 100.00% 100.00%

2020 census

As of the 2020 census, Alleghany had a population of 30. The population density was 86.0 inhabitants per square mile (33.2/km2). The median age was 54.5 years. 10.0% of residents were under the age of 18, 70% were aged 18 to 64, and 20.0% of residents were 65 years of age or older. For every 100 females there were 172.7 males, and for every 100 females age 18 and over there were 200.0 males age 18 and over.[23][24]

0.0% of residents lived in urban areas, while 100.0% lived in rural areas.[25]

There were 16 households in Alleghany, of which 31.3% had children under the age of 18 living in them. The average household size was 1.88. There were 10 families (63% of all households). Of all households, 50.0% were married-couple households, 31.3% were households with a male householder and no spouse or partner present, and 6.3% were households with a female householder and no spouse or partner present. About 25.1% of all households were made up of individuals and 12.5% had someone living alone who was 65 years of age or older.[23][26]

There were 25 housing units at an average density of 71.6 units per square mile (27.6 units/km2), of which 36.0% were vacant. The homeowner vacancy rate was 0.0% and the rental vacancy rate was 0.0%. Of occupied housing units, 56% were owner-occupied and 44% were occupied by renters.[23][27]

Racial composition as of the 2020 census[24]
RaceNumberPercent
White2376.7%
Black or African American00.0%
American Indian and Alaska Native00.0%
Asian00.0%
Native Hawaiian and Other Pacific Islander00.0%
Some other race26.7%
Two or more races516.7%

Politics

In the state legislature, Alleghany is in the 1st senatorial district, represented by Republican Megan Dahle,[28] and the 1st Assembly district, represented by Republican Heather Hadwick.[29]

Federally, Alleghany is in California's 3rd congressional district, represented by Independent Kevin Kiley.[30]

Notable people

References

  1. ↑ "2020 U.S. Gazetteer Files". United States Census Bureau. Retrieved October 30, 2021.
  2. 1 2 U.S. Geological Survey Geographic Names Information System: Alleghany, California
  3. ↑ Gudde, Erwin; William Bright (2004). California Place Names (Fourth ed.). University of California Press. p. 9. ISBN 0-520-24217-3.
  4. ↑ "Decennial Census by Decade". United States Census Bureau.
  5. ↑ "1870 Census of Population - Population of Civil Divisions less than Counties - California - Almeda County to Sutter County" (PDF). United States Census Bureau. Archived from the original (PDF) on January 26, 2025 – via Wayback Machine.
  6. ↑ "1870 Census of Population - Population of Civil Divisions less than Counties - California - Tehama County to Yuba County" (PDF). United States Census Bureau. Archived from the original (PDF) on February 2, 2025 – via Wayback Machine.
  7. ↑ "1890 Census of Population - Population of California by Minor Civil Divisions" (PDF). United States Census Bureau. Archived from the original (PDF) on March 11, 2025 – via Wayback Machine.
  8. ↑ "1900 Census of Population - Population of California by Counties and Minor Civil Divisions" (PDF). United States Census Bureau. Archived from the original (PDF) on March 4, 2025 – via Wayback Machine.
  9. ↑ "1910 Census of Population - Supplement for California" (PDF). United States Census Bureau. Archived from the original (PDF) on April 4, 2025. Retrieved February 4, 2025 – via Wayback Machine.
  10. ↑ "1920 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau. Archived from the original (PDF) on April 28, 2025 – via Wayback Machine.
  11. ↑ "1930 Census of Population - Number and Distribution of Inhabitants - California" (PDF). United States Census Bureau. Archived from the original (PDF) on March 17, 2025 – via Wayback Machine.
  12. ↑ "1940 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau. Archived from the original (PDF) on January 26, 2025 – via Wayback Machine.
  13. ↑ "1950 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau. Archived from the original (PDF) on February 19, 2025 – via Wayback Machine.
  14. ↑ "1960 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau. Archived from the original (PDF) on March 22, 2025 – via Wayback Machine.
  15. ↑ "1960 Census of Population - General population Characteristics - California" (PDF). United States Census Bureau. Archived from the original (PDF) on March 22, 2025 – via Wayback Machine.
  16. ↑ "1970 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau. Archived from the original (PDF) on February 26, 2025 – via Wayback Machine.
  17. ↑ "1980 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau. Archived from the original (PDF) on January 26, 2025 – via Wayback Machine.
  18. ↑ "1990 Census of Population - Population and Housing Unit Counts - California" (PDF). United States Census Bureau. Archived from the original (PDF) on January 26, 2025 – via Wayback Machine.
  19. ↑ "2000 Census of Population - Population and Housing Unit Counts - California" (PDF). United States Census Bureau. Archived from the original (PDF) on March 22, 2025 – via Wayback Machine.
  20. 1 2 "2010 Census of Population - Population and Housing Unit Counts - California" (PDF). United States Census Bureau. Archived from the original (PDF) on March 28, 2025 – via Wayback Machine.
  21. ↑ "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2010: DEC Redistricting Data (PL 94-171) – Alleghany CDP, California". United States Census Bureau.
  22. ↑ "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2020: DEC Redistricting Data (PL 94-171) – Alleghany CDP, California". United States Census Bureau.
  23. 1 2 3 "2020 Decennial Census Demographic Profile (DP1)". United States Census Bureau. 2021. Retrieved April 26, 2026.
  24. 1 2 "2020 Decennial Census Redistricting Data (Public Law 94-171)". United States Census Bureau. 2021. Retrieved April 26, 2026.
  25. ↑ "2020 Decennial Census Demographic and Housing Characteristics (DHC)". United States Census Bureau. 2023. Retrieved April 26, 2026.
  26. ↑ "Alleghany CDP, California; P16: Household Type - 2020 Census of Population and Housing". US Census Bureau. Retrieved March 31, 2025.
  27. ↑ "Alleghany CDP, California; DP1: Profile of General Population and Housing Characteristics - 2020 Census of Population and Housing". US Census Bureau. Retrieved March 31, 2025.
  28. ↑ "Senators". State of California. Retrieved March 10, 2013.
  29. ↑ "Members Assembly". State of California. Retrieved March 2, 2013.
  30. ↑ "California's 3rd Congressional District - Representatives & District Map". Civic Impulse, LLC. Retrieved May 9, 2025.
  31. ↑ "1870 United States Federal Census, Entry for Michael Walsh Family". Ancestry.com. Lehi, UT: Ancestry.com, LLC. July 12, 1870. Retrieved November 26, 2023.
  32. ↑ Cloud, Ray W. (December 7, 1951). "Improvements Came Fast In 1860s as Redwood City Began to Take Shape". Redwood City Tribune. Redwood City, CA. p. 18A – via Newspapers.com.

Further reading

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