Eureka, CA Profile: Facts, Map & Data


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Eureka, California - Basic Facts

The City of Eureka had a population of 28,333 as of July 1, 2018.

The primary coordinate point for Eureka is located at latitude 40.7935 and longitude -124.1553 in Humboldt County. The formal boundaries for the City of Eureka (see map below) encompass a land area of 9.38 sq. miles and a water area of 5.07 sq. miles. Humboldt County is in the Pacific time zone (GMT -8). The elevation is 39 feet.

The City of Eureka (GNIS ID: 2410463) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

California is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Eureka is located within Eureka CCD of Humboldt County.

Beneath the boundary map are tables with Eureka population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

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City of Eureka, CA Boundary Map

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Boundary Maps: Eureka CCD | Humboldt County | California Counties

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Eureka, CA Data & Demographics (As of July 1, 2018)


Total Population 28,333
Population in Households 26,215
Population in Familes 17,525
Population in Group Qrtrs 2,118
Population Density2 3,019
Diversity Index3 56


Median Household Income $37,247
Average Household Income $53,108
Per Capita Income $22,408


Total Housing Units 12,307 (100%)
Owner Occupied HU 5,055 (41.1%)
Renter Occupied HU 6,377 (51.8%)
Vacant Housing Units 876 ( 7.1%)
Median Home Value $286,807
Average Home Value $310,081


Total Households 11,431
Average Household Size 2.29
Family Households 5,846
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.5% 0.53%
Households 0.3% 0.48%
Families 0.28% 0.47%
Median Household Income   0.73%
Per Capita Income   1.27%

Eureka, CA - Peer Comparisons by Rank and Percentile

The table below compares Eureka to the other 1,516 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 275 82nd
Population Density # 460 70th
Diversity Index # 908 40th
Median Household Income # 1316 13th
Per Capita Income # 1104 27th

Additional comparisons and rankings can be made with a VERY EASY TO USE California Census Data Comparison Tool.

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