• county
  • FIPS 06023
  • Largest town: Eureka

Humboldt County, California

Humboldt County had 132,380 residents in the Census Vintage 2024 estimate, on 3,568.0 square miles of land. It ranks 35th of 58 in California by population and 14th by land area.

Population
132,380
#35 of 58 in California · #499 in US
Area
3,568.0 sq mi
#14 of 58 in California · #142 in US
Density
37 / sq mi
#42 of 58 in California · #1,744 in US
Median household income
$61,307
#51 of 58 in California · #1,707 in US

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

Humboldt County within California. Pin: Sacramento.

Measure from here

Tools and pages that start from Humboldt County

Humboldt County population, land area and income

Humboldt County had 132,380 residents in the Census Vintage 2024 estimate, on 3,568.0 square miles of land. It ranks 35th of 58 in California by population and 14th by land area. That works out to 37.1 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; Humboldt County is somewhat smaller.

Its SAIPE 2023 median household income of $61,307 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

132,380

3144th1st

499th of 3,144 (US)

Land area

3,568 sq mi

3144th1st

142nd of 3,144 (US)

Density

37.1 / sq mi

3144th1st

1744th of 3,144 (US)

Median household income

$61,307

3143rd1st

1707th of 3,143 (US)

Rank within California (58)

Population

132,380

58th1st

35th of 58 (CA)

Land area

3,568 sq mi

58th1st

14th of 58 (CA)

Density

37.1 / sq mi

58th1st

42nd of 58 (CA)

Median household income

$61,307

58th1st

51st of 58 (CA)

How Humboldt County's population changed since 2020

Humboldt County lost 3,944 residents between the July 2020 and July 2024 estimates, a drop of 2.9%. That ranks 50th 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, Humboldt County recorded 5,048 births and 6,695 deaths, a natural change of -1,647. Net international migration added +605 and net domestic migration, people moving to or from other US counties, came to -3,032. The largest single component was domestic migration, which removed 3,032 people.

136.3k2020135.0k2021135.0k2022134.0k2023132.4k2024
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
5,048
Deaths
6,695
Net international migration
+605
Net domestic migration
-3,032
Change, July 2023 to July 2024
-1,629

Where Humboldt County is

The Census internal point of Humboldt County is at 40.706700, -123.926200. 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 Humboldt 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: Humboldt County internal point. Dark pin: Sacramento.

Internal point

Decimal
40.706700, -123.926200
DMS
40°42'24.12"N 123°55'34.32"W
UTM
10N 421760.4E 4506611.3N
Geohash
9ppzefrtw
Plus code
84GRP34F+MG

Towns in Humboldt County

6 incorporated places of 1,000+ people have residents in Humboldt County, 62,053 people together, or 47% of the county. Each figure counts only the part of the town inside Humboldt County; towns marked "part" extend into another county. The largest is Eureka with 25,412.

  1. 01Eureka25,412
  2. 02Arcata18,748
  3. 03Fortuna12,114
  4. 04Rio Dell3,259
  5. 05Ferndale1,361
  6. 06Blue Lake1,159
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Humboldt County

The Census 2024 county adjacency file lists 4 neighbors for Humboldt County. The most populous is Mendocino County, CA, with 89,175 residents. Distances run between Census internal points in a straight line.

Distance to Sacramento and the nearest big city

Sacramento is 195.9 miles SE of Humboldt County's internal point in a straight line. The nearest place of 100,000 or more is Chico, CA (population 102,911), 129.1 miles away. The nearest place of 10,000 or more is Arcata, CA (population 18,748), 13.3 miles away.

Humboldt County FIPS code

The FIPS code of Humboldt County is 06023: state code 06 for California plus county code 023. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $61,307.

Questions people ask

What is the population of Humboldt County, California?

The Census Vintage 2024 estimate for July 1, 2024 is 132,380. That is down 3,944 people (2.9%) from the July 2020 estimate of 136,324.

What is the FIPS code of Humboldt County?

06023. The first two digits (06) are California; the last three (023) identify the county.

What is the largest town in Humboldt County?

Eureka, with 25,412 residents inside Humboldt County in 2024.

Which counties border Humboldt County?

4 county-equivalents border it in the Census 2024 adjacency file: Mendocino County, CA; Siskiyou County, CA; Del Norte 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.