• county
  • FIPS 06045
  • Largest town: Ukiah

Mendocino County, California

Mendocino County had 89,175 residents in the Census Vintage 2024 estimate, on 3,506.8 square miles of land. It ranks 38th of 58 in California by population and 15th by land area.

Population
89,175
#38 of 58 in California · #671 in US
Area
3,506.8 sq mi
#15 of 58 in California · #143 in US
Density
25 / sq mi
#44 of 58 in California · #2,054 in US
Median household income
$65,891
#45 of 58 in California · #1,307 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Mendocino County within California. Pin: Sacramento.

Measure from here

Tools and pages that start from Mendocino County

Mendocino County population, land area and income

Mendocino County had 89,175 residents in the Census Vintage 2024 estimate, on 3,506.8 square miles of land. It ranks 38th of 58 in California by population and 15th by land area. That works out to 25.4 people per square mile, below the US average of 96.3, and below the national county median.

The median county-equivalent in California has 187,274 residents, so Mendocino County has 48% of the typical county's population.

Its SAIPE 2023 median household income of $65,891 is above the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

89,175

3144th1st

671st of 3,144 (US)

Land area

3,507 sq mi

3144th1st

143rd of 3,144 (US)

Density

25.4 / sq mi

3144th1st

2054th of 3,144 (US)

Median household income

$65,891

3143rd1st

1307th of 3,143 (US)

Rank within California (58)

Population

89,175

58th1st

38th of 58 (CA)

Land area

3,507 sq mi

58th1st

15th of 58 (CA)

Density

25.4 / sq mi

58th1st

44th of 58 (CA)

Median household income

$65,891

58th1st

45th of 58 (CA)

How Mendocino County's population changed since 2020

Mendocino County lost 2,187 residents between the July 2020 and July 2024 estimates, a drop of 2.4%. That ranks 44th of 58 in California for growth. The median California county changed by -0.6%, and the state as a whole by -0.2%.

Since the April 2020 estimates base, Mendocino County recorded 3,595 births and 4,421 deaths, a natural change of -826. Net international migration added +1,119 and net domestic migration, people moving to or from other US counties, came to -2,759. The largest single component was domestic migration, which removed 2,759 people.

91.4k202091.3k202190.0k202289.4k202389.2k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
3,595
Deaths
4,421
Net international migration
+1,119
Net domestic migration
-2,759
Change, July 2023 to July 2024
-179

Where Mendocino County is

The Census internal point of Mendocino County is at 39.432400, -123.442900. It sits in UTM zone 10N. The map shades California's 58 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Mendocino County outlined. Dots are towns of 1,000+ people with residents in it.

Los Angeles County: -2.4%Kings County: +1.4%Sierra County: -3.6%Riverside County: +4.3%Santa Barbara County: -0.8%San Bernardino County: +1.4%Nevada County: -0.1%Santa Clara County: +0.1%Yuba County: +6.7%Fresno County: +1.4%Plumas County: -4.7%Monterey County: -1.0%Amador County: +3.6%Alameda County: -1.9%Tulare County: +2.0%San Joaquin County: +4.5%Alpine County: -6.8%Siskiyou County: -3.4%Butte County: -0.9%Kern County: +1.8%San Diego County: -0.1%Sacramento County: +1.5%Ventura County: -1.0%Yolo County: +3.4%Lake County: -0.6%Napa County: -3.4%Tehama County: -1.9%San Francisco County: -5.4%El Dorado County: +0.8%Calaveras County: +2.5%Inyo County: -2.7%Shasta County: -0.6%Lassen County: -12.3%San Luis Obispo County: -0.0%Mariposa County: -0.5%Trinity County: -2.8%Contra Costa County: +0.6%Mendocino County: -2.4%Imperial County: +1.1%Santa Cruz County: -3.4%Placer County: +6.9%Orange County: -0.5%San Benito County: +7.2%Marin County: -1.9%San Mateo County: -2.6%Colusa County: +0.9%Del Norte County: -2.2%Solano County: +0.5%Glenn County: -2.0%Tuolumne County: -2.7%Sonoma County: -0.6%Humboldt County: -2.9%Mono County: -1.8%Stanislaus County: +0.6%Merced County: +4.9%Sutter County: -0.9%Madera County: +5.8%Modoc County: -2.1%
Change 2020 to 2024
  1. < -2.7%
  2. < -1.0%
  3. < -0.0%
  4. < +1.5%
  5. ≥ +1.5%
no data

Orange pin: Mendocino County internal point. Dark pin: Sacramento.

Internal point

Decimal
39.432400, -123.442900
DMS
39°25'56.64"N 123°26'34.44"W
UTM
10N 461883.0E 4364855.8N
Geohash
9r00qfrw7
Plus code
84FRCHJ4+XR

Towns in Mendocino County

3 incorporated places of 1,000+ people have residents in Mendocino County, 28,028 people together, or 31% of the county. Each figure counts only the part of the town inside Mendocino County; towns marked "part" extend into another county. The largest is Ukiah with 16,067.

  1. 01Ukiah16,067
  2. 02Fort Bragg7,117
  3. 03Willits4,844
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Mendocino County

The Census 2024 county adjacency file lists 6 neighbors for Mendocino County. The most populous is Sonoma County, CA, with 485,375 residents. Distances run between Census internal points in a straight line.

Distance to Sacramento and the nearest big city

Sacramento is 120.2 miles ESE of Mendocino County's internal point in a straight line. The nearest place of 100,000 or more is Santa Rosa, CA (population 177,524), 78.9 miles away. The nearest place of 10,000 or more is Ukiah, CA (population 16,067), 23.4 miles away.

Mendocino County FIPS code

The FIPS code of Mendocino County is 06045: state code 06 for California plus county code 045. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $65,891.

Questions people ask

What is the population of Mendocino County, California?

The Census Vintage 2024 estimate for July 1, 2024 is 89,175. That is down 2,187 people (2.4%) from the July 2020 estimate of 91,362.

What is the FIPS code of Mendocino County?

06045. The first two digits (06) are California; the last three (045) identify the county.

What is the largest town in Mendocino County?

Ukiah, with 16,067 residents inside Mendocino County in 2024.

Which counties border Mendocino County?

6 county-equivalents border it in the Census 2024 adjacency file: Sonoma County, CA; Humboldt County, CA; Lake County, CA; Tehama County, CA; Glenn County, CA; Trinity County, CA.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.