Twain, California

Twain
Unincorporated Community Census Designated Place
The Twain General Store in February 2022
Location in Plumas County and the state of California
Twain Location in the United States
Coordinates: 40°1′5″N121°2′56″W / 40.01806°N 121.04889°W / 40.01806; -121.04889
Country	United States
State	California
County	Plumas
Area [1]
• Total	7.190 sq mi (18.623 km2)
• Land	7.190 sq mi (18.623 km2)
• Water	0 sq mi (0 km2)  0%
Elevation	2,858 ft (871 m)
Population  (2020) [2]
• Total	75
• Density	10/sq mi (4.0/km2)
Time zone	UTC-8 (Pacific (PST))
• Summer (DST)	UTC-7 (PDT)
ZIP code	95984
Area code	530
FIPS code	06-80952
GNIS feature ID	0224823

Twain is a census-designated place (CDP) in Plumas County, California, United States. As of the 2020 census, the CDP population was 75, ^[2] down from 82 at the 2010 census.

Geography

Twain is located at 40°1′5″N121°2′56″W / 40.01806°N 121.04889°W / 40.01806; -121.04889 (40.018101, -121.048898). ^[3]

According to the United States Census Bureau, the CDP has a total area of 7.2 square miles (19 km²), all of it land.

Climate

This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F. According to the Köppen Climate Classification system, Twain has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps. ^[4]

Demographics

Historical population

Census	Pop.	Note	%±
2000	87		—
2010	82		−5.7%
2020	75		−8.5%
U.S. Decennial Census [5] 1860–1870 [6] [7] 1880-1890 [8] 1900 [9] 1910 [10] 1920 [11] 1930 [12] 1940 [13] 1950 [14] 1960 [15] 1970 [16] 1980 [17] 1990 [18] 2000 [19] 2010 [20]

Twain first appeared as a census designated place in the 2000 U.S. Census. ^[19]

2020

Twain 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 2000 [21]	Pop 2010 [22]	Pop 2020 [23]	% 2000	% 2010	% 2020
White alone (NH)	83	65	62	95.40%	79.27%	82.67%
Black or African American alone (NH)	0	0	0	0.00%	0.00%	0.00%
Native American or Alaska Native alone (NH)	0	2	5	0.00%	2.44%	6.67%
Asian alone (NH)	0	0	1	0.00%	0.00%	1.33%
Native Hawaiian or Pacific Islander alone (NH)	0	0	0	0.00%	0.00%	0.00%
Other race alone (NH)	0	0	1	0.00%	0.00%	1.33%
Mixed race or Multiracial (NH)	2	1	2	2.30%	1.22%	2.67%
Hispanic or Latino (any race)	2	14	4	2.30%	17.07%	5.33%
Total	87	82	75	100.00%	100.00%	100.00%

The 2020 United States census reported that Twain had a population of 75. The population density was 10.4 inhabitants per square mile (4.0/km²). The racial makeup of Twain was 64 (85%) White, 0 (0%) African American, 5 (7%) Native American, 1 (1%) Asian, 0 (0%) Pacific Islander, 3 (4%) from other races, and 2 (3%) from two or more races. Hispanic or Latino of any race were 4 persons (5%). ^[24]

There were 32 households, out of which 5 (16%) had children under the age of 18 living in them, 9 (28%) were married-couple households, 6 (19%) were cohabiting couple households, 6 (19%) had a female householder with no partner present, and 11 (34%) had a male householder with no partner present. 12 households (38%) were one person, and 10 (31%) were one person aged 65 or older. The average household size was 2.34. ^[24] There were 14 families (44% of all households). ^[25]

The age distribution was 10 people (13%) under the age of 18, 4 people (5%) aged 18 to 24, 8 people (11%) aged 25 to 44, 21 people (28%) aged 45 to 64, and 32 people (43%) who were 65 years of age or older. The median age was 62.2 years. There were 31 males and 44 females. ^[24]

There were 43 housing units at an average density of 6.0 units per square mile (2.3 units/km²), of which 32 (74%) were occupied. Of these, 12 were owner-occupied and 20 were occupied by renters. ^[24]

At the 2000 census, the median household income was $16,071 and the median family income was $10,313. The per capita income for the CDP was $19,472. There were 70.6% of families and 72.1% of the population living below the poverty line, including no under eighteens and 100.0% of those over 64. ^[26]

Politics

In the state legislature, Twain is in the 1st senatorial district , represented by Republican Megan Dahle, ^[27] and the 1st Assembly district , represented by Republican Heather Hadwick. ^[28]

Federally, Twain is in California's 1st congressional district , represented by Republican Doug LaMalfa. ^[29]

Education

The school district is Plumas Unified School District. ^[30]

References

1. "2020 U.S. Gazetteer Files". United States Census Bureau. Retrieved July 11, 2025.
2. "Twain CDP, California - Census Bureau Profile". data.census.gov. United States Census Bureau. Retrieved July 11, 2025.
3. "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.
4. Climate Summary for Twain, California
5. "Decennial Census by Decade". United States Census Bureau .
6. "1870 Census of Population - Population of Civil Divisions less than Counties - California - Almeda County to Sutter County" (PDF). United States Census Bureau .
7. "1870 Census of Population - Population of Civil Divisions less than Counties - California - Tehama County to Yuba County" (PDF). United States Census Bureau .
8. "1890 Census of Population - Population of California by Minor Civil Divisions" (PDF). United States Census Bureau .
9. "1900 Census of Population - Population of California by Counties and Minor Civil Divisions" (PDF). United States Census Bureau .
10. "1910 Census of Population - Supplement for California" (PDF). United States Census Bureau .
11. "1920 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau .
12. "1930 Census of Population - Number and Distribution of Inhabitants - California" (PDF). United States Census Bureau .
13. "1940 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau .
14. "1950 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau .
15. "1960 Census of Population - General population Characteristics - California" (PDF). United States Census Bureau .
16. "1970 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau .
17. "1980 Census of Population - Number of Inhabitants - California" (PDF). United States Census Bureau .
18. "1990 Census of Population - Population and Housing Unit Counts - California" (PDF). United States Census Bureau .
19. "2000 Census of Population - Population and Housing Unit Counts - California" (PDF). United States Census Bureau .
20. "2010 Census of Population - Population and Housing Unit Counts - California" (PDF). United States Census Bureau .
21. "P004: Hispanic or Latino, and Not Hispanic or Latino by Race – 2000: DEC Summary File 1 – Twain CDP, California". United States Census Bureau .
22. "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2010: DEC Redistricting Data (PL 94-171) – Twain CDP, California". United States Census Bureau .
23. "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2020: DEC Redistricting Data (PL 94-171) – Twain CDP, California". United States Census Bureau .
24. "Twain CDP, California; DP1: Profile of General Population and Housing Characteristics - 2020 Census of Population and Housing". US Census Bureau. Retrieved June 4, 2025.
25. "Twain CDP, California; P16: Household Type - 2020 Census of Population and Housing". US Census Bureau. Retrieved June 4, 2025.
26. "U.S. Census website". United States Census Bureau . Retrieved January 31, 2008.
27. "Senators". State of California. Retrieved March 10, 2013.
28. "Members Assembly". State of California. Retrieved March 2, 2013.
29. "California's 1st Congressional District - Representatives & District Map". Civic Impulse, LLC. Retrieved March 3, 2013.
30. Geography Division (December 18, 2020). 2020 CENSUS - SCHOOL DISTRICT REFERENCE MAP: Plumas County, CA (PDF) (Map). U.S. Census Bureau . Retrieved March 22, 2025. - Text list