Mendocino County, California Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 38th-largest in California
The population of Mendocino County, California is 90,709 as of the 2023 American Community Survey, making it the 38th-largest county in California. The median household income is $64,688, the median home value is $486,000, and the median age is 43.9.
The population of Mendocino County has grown 1.6% since 2010 (87,796 → 89,175), a +0.11% annualized rate.
90,709
Population
+0.11%
Annual growth
26
People / sq mi
$64,688
Median Income
$486,000
Median Home Value
Mendocino County covers 3,507 sq mi of land at 25.9 people per square mile.
About Mendocino County, CA
Mendocino County is a county in California with a population of 90,709. It ranks #38 among counties in California by population. The median age is 43.9, older than the national median. The population is 49.6% male and 50.4% female.
The median household income in Mendocino County is $64,688, below the US median of $74,580. 10.7% of residents live below the federal poverty level. Home values sit at a median of $486,000, with monthly rent averaging $1,325. The homeownership rate of 60.9% is lower than the national rate of 64.8%.
Educational attainment in Mendocino County reflects 24.9% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 11.7% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 22.3 minutes each way.
Mendocino County Population History (2010-2024)
The county of Mendocino County had a population of 87,796 in 2010 and 89,175 in 2024, a 1.6% growth over 14 years. The peak was 91,362 in 2020. Average annual growth rate: 0.12%.
89,175
Population (2024)
87,796
Population (2010)
91,362
Peak (2020)
0.12%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 87,796 |
| 2011 | 87,335 |
| 2012 | 87,293 |
| 2013 | 87,070 |
| 2014 | 87,247 |
| 2015 | 87,131 |
| 2016 | 87,319 |
| 2017 | 87,690 |
| 2018 | 87,549 |
| 2019 | 86,932 |
| 2020 | 91,362 |
| 2021 | 91,303 |
| 2022 | 90,027 |
| 2023 | 89,354 |
| 2024 | 89,175 |
Race & Ethnicity
| White | 68.3% |
| Black or African American | 0.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 6.8% |
| Two or More Races | 0.0% |
Age & Sex
43.9
Median Age
50.4%
Female
49.6%
Male
24.0%
Age 65+
Age Distribution
Children (under 15): 17.5% · Seniors (65+): 24.0%
Income & Poverty
| Median household income | $64,688$-31,646 vs state |
| Mean household income | $91,472 |
| Per-capita income | $37,230 |
| Poverty rate | 10.7%+2.3% vs state |
| Unemployment rate | 5.3% |
| Employment-to-population | 51.1% |
Top Industries by Employment
The largest employment sector in Mendocino County is professional & business services, accounting for 23.6% of workers.
How residents commute
0.4%
Drive alone
6.5%
Carpool
71.5%
Public transit
11.7%
Work from home
22.3 min
Avg commute
Housing
$486,000$-209,400 vs state
Median home value
$1,325
Median rent
60.9%
Homeownership rate
41,495
Total housing units
83.3%
Occupied
16.7%
Vacant
39.1%
Renter-occupied
Social & access
91.8%
With health insurance
92.1%
With broadband internet
19.6%
Foreign-born
6.6%
Veterans (18+)
18.5%
With a disability
78.4%
Speak language other than English at home
Education
86.2%
High School+
24.9%
Bachelor's+
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Part of California
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County rankings
Frequently Asked Questions
Mendocino County, California has a population of 90,709 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 38th-largest county in California. Population density is 26 people per square mile.
The population of Mendocino County has grown 1.6% since 2010 (87,796 → 89,175), a +0.11% annualized rate.
The median household income in Mendocino County, California is $64,688, with mean (average) household income of $91,472 and per-capita income of $37,230. 10.7% of residents live below the federal poverty level.
In Mendocino County, the largest racial and ethnic groups are White (68.3%), Hispanic or Latino (6.8%), Black or African American (0.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Mendocino County, California is 43.9 years. Residents are 50.4% female and 49.6% male.
The median home value in Mendocino County is $486,000 and median monthly rent is $1,325. 60.9% of occupied housing units are owner-occupied. The county has 41,495 total housing units, 16.7% of which are vacant.
The largest employment sector in Mendocino County, California is professional, scientific, and management services, employing 23.6% of workers. The unemployment rate is 5.3%.
Los Angeles is among the largest cities associated with Mendocino County, California, with a population of 3,857,897.
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.