Eureka, CA: Population, ZIP Codes & Nearby Cities

Eureka, CA is a small incorporated city located in Humboldt County in the state of California. Our data estimates 44,236 residents, places it at 40.794°N, 124.157°W, and lists it in Pacific time. This page explains its population rank, ZIP codes, nearby cities and distance to big metros.

What are the key facts about Eureka, CA?

What is the population of Eureka, CA?

Eureka has an estimated population of 44,236. That makes it the 216th largest of the 1,470 places we list in California, and the largest place in its county. The typical place in California has about 3,379 residents, so Eureka is roughly 13.1 times the size of a typical neighbor in the state.

Estimates for places of this size carry wider margins of error than those for big cities, so treat the figure as a guide to scale. Our guide to understanding city population numbers explains why sources disagree.

Places in California with a similar population include Altadena (44,850), Selma (44,703), Danville (44,510), Desert Hot Springs (43,914), Rohnert Park (43,291). Comparing these pages is a quick way to see how Eureka differs from communities of the same scale.

How dense is Eureka?

Eureka has about 2,844 people per square mile (1,098 per square kilometer), which we classify as suburban. Within California, it is denser than about 68% of the listed places. Land at this level is usually a mix of single-family neighborhoods, shopping corridors and parks, where driving is common but destinations are close. Read how to interpret population density to see how we draw these lines.

What ZIP codes does Eureka use?

Eureka uses 5 ZIP codes: 95503, 95501, 95521, 95502, 95534. Several codes in one place usually reflect separate delivery areas, post offices or large buildings with their own code. Codes beginning with 9 are assigned to the Pacific states (Alaska, California, Hawaii, Oregon and Washington). Learn more in our guide to how ZIP codes work or check any code with the ZIP code lookup.

What time zone is Eureka in?

Eureka is in the Pacific time zone, which is UTC−8 from Coordinated Universal Time in standard time (IANA zone America/Los_Angeles). The area observes daylight saving time, so clocks move forward in March and back in November. The nearest listed place in a different time zone is Ontario, OR, about 429 miles away, which gives a sense of how far the nearest zone boundary may be. Current local time: see the Pacific time hub. For the rules behind these zones, read US time zones explained.

Where is Eureka located in California?

Eureka lies in the northwestern part of California, at 40.794° north latitude and 124.157° west longitude. The state capital, Sacramento, is about 210 miles to the southeast. The closest listed place in another state is Brookings, OR, roughly 88 miles to the north, which shows how near Eureka is to a state line. For big-city services, the nearest place with more than 100,000 people is Redding, CA, 95 miles to the east.

Which cities are near Eureka, CA?

The closest listed place to Eureka is Myrtletown, CA, 1.5 miles to the east. Of the eight nearest places below, 4 are in the same county. Distances are straight-line (great-circle) miles measured between place centers; see how distance is calculated.

Which county is Eureka in?

Eureka is in Humboldt County, which has the Federal Information Processing Standards (FIPS) code 06023. The county contains 37 places in our data, 5 of which have their own page here and 32 smaller communities that appear only in county and state lists. Other places in the county include Arcata (34,616), McKinleyville (17,208), Fortuna (13,449), Myrtletown (5,222), Humboldt Hill (4,315). Codes like this one help separate places that share a name; see the guide to counties and FIPS codes.

How far is Eureka from major US cities?

Among six major hubs, Eureka is closest to Los Angeles, CA at about 559 miles and farthest from New York, NY at about 2,592 miles in a straight line. Road distances are usually 10 to 30 percent longer. Try the distance calculator for any other pair.

Are there other places called Eureka?

Yes. Our data lists 10 other places named Eureka: Eureka, MO (12,097), Eureka, IL (5,560), Eureka, KS (2,346), Eureka, MT (1,406), Eureka, SD (826), Eureka, UT (707), Eureka, WI (601), Eureka, NV (462), and 2 more. When you search for Eureka, add the state or county so you land on the right one. This page covers the Eureka in Humboldt County, California.

Planning a move to Eureka?

If you are weighing Eureka, start with the practical numbers: how far it is from where you live, whether it changes your time zone, and how its size and density compare with your current city. Use the distance calculator to measure the trip from where you live. The radius search tool lists every place within any distance of it. Our checklist for comparing cities explains what to check next.

Where to go next

Population and density come from a compiled dataset and are estimates. They may differ from official Census Bureau counts. Verify important figures at census.gov.