PlainZIP

Eureka, CA · standard

ZIP Code 95503

Humboldt County, California - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

24,152
108/sq mi
$71,855
Median income
$444,700
Median home value
29.1%
Bachelor's or higher

The verdict

Eureka pairs an above-median household income with upper-quartile home values, in a rural, homeowner-dominated area.

Top 50%
household income, US ZIPs
Top 17%
home value, US ZIPs
108
people per sq mi
70%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 95503 against every reporting US ZIP.

ZIP code 95503 is a densely settled ZIP (a standard USPS delivery area) in Eureka, Humboldt County, California, with 24,152 residents across 223.8 square miles, a density of 108 people per square mile, in the Los Angeles time zone.

ZIP 95503 lands in the middle-income range, with a median household income of $71,855 (29% below the California average), while per-capita income is $41,214. Local economic indicators show a 13.8% poverty rate alongside 4.4% unemployment. Median home value sits at $444,700 (42% below the state average), median rent at $1,557 a month, and owner-occupancy at 69.5%.

Educational attainment sits below the national norm: 29.1% of adults hold a bachelor's degree or higher, the median age is 41.4, and the average commute is 16 minutes. A geography-based comparison follows: 7 ZIP codes within about 10 miles of 95503, plus 6 more within Humboldt County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 95503

Top 5 sectors by establishment count in Eureka, CA

Which industries have the most business establishments in ZIP 95503.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 95503, Eureka, CA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

24,152

Population

223.8

Area (sq mi)

108

People / sq mi

Los Angeles

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 95503?

41.4

Median Age

50.0%

Male

50.0%

Female

8.0%

Foreign-Born

White 73.3%
African American 0.9%
Asian 4.3%
American Indian or Alaska Native 2.0%
Native Hawaiian or Pacific Islander 0.8%
Two or More Ethnicities 13.5%
Hispanic or Latino 12.5%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$71,855

Median Household Income

-29% vs state

$41,214

Per Capita Income

13.8%

Poverty Rate

4.4%

Unemployment Rate

16.3 min

Mean Commute Time

How ZIP 95503 ranks nationally

Eureka, CA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$71,855 Top 50% higher than 50% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 55.3%
Bachelor's Degree or Higher 29.1%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

10,677

Total Housing Units

9,982

Occupied Units

695

Vacant Units

2.47

Avg Household Size

Occupancy Type

Owner 69.5%
Renter 30.5%

$444,700

Median Home Value

-42% vs state

$1,557

Median Rent

1971

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

-3.6%

YoY Change (2024)

310

HPI Index (2000 = 100)

+210%

Total Change Since 2000

Home values in ZIP 95503 have decreased 3.6% over the past year (2024). Since 2000, this ZIP has seen +210% cumulative appreciation.

Year Annual Change HPI Index
2020 +6.2% 240
2021 +12.9% 271
2022 +18.3% 320
2023 +0.5% 322
2024 -3.6% 310

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 335 business establishments in ZIP 95503, employing approximately 2,879 people with a combined annual payroll of $145,812,000.

335

Businesses

2,879

Employees

$145.8M

Annual Payroll

14

Industry Sectors

Industry Establishments % of Total
Construction 82 24.5%
Health care and social assistance 61 18.2%
Retail trade 47 14.0%
Other services (except public administration) 31 9.3%
Professional, scientific, and technical services 23 6.9%
Accommodation and food services 23 6.9%
Real estate and rental and leasing 14 4.2%
Transportation and warehousing 9 2.7%
Information 9 2.7%
Administrative and support and waste management and remediation services 9 2.7%
Finance and insurance 7 2.1%
Manufacturing 6 1.8%
Wholesale trade 5 1.5%
Agriculture, forestry, fishing and hunting 4 1.2%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 95503 vs 95537 →

ZIP 95503 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 95503 ranks the most populous - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 95503 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 95503 ranks #4 of 8 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
95537 Fields Landing, CA 276 6.4 mi
95501 Eureka, CA 23,976 5.9 mi
95524 Bayside, CA 1,787 7.2 mi
95521 Arcata, CA 20,199 8.8 mi
95564 Samoa, CA 462 7.2 mi
95551 Loleta, CA 1,739 7.5 mi
95540 Fortuna, CA 13,657 10.3 mi

More ZIP Codes in Humboldt County

95501 standard
Eureka, CA
Pop: 23,976
95521 standard
Arcata, CA
Pop: 20,199
95519 standard
Mckinleyville, CA
Pop: 17,432
95540 standard
Fortuna, CA
Pop: 13,657
95546 standard
Hoopa, CA
Pop: 3,494
95562 standard
Rio Dell, CA
Pop: 3,450

Related Areas

Humboldt County Eureka, CA California

Frequently Asked Questions

What county is ZIP code 95503 in? ▼
ZIP code 95503 (Eureka) is located in Humboldt County, California. Humboldt County contains multiple ZIP codes, see the full list at /counties/humboldt-ca.
What is the population of ZIP code 95503? ▼
ZIP code 95503 in Eureka, CA has a population of 24,152 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 95503? ▼
The median household income in ZIP 95503 is $71,855, which is 6% below the national average of $76,288.
What is the average home value in ZIP 95503? ▼
The median home value in ZIP 95503 is $444,700, which is 60% above the national average of $278,155.
What is the demographic makeup of ZIP 95503? ▼
The largest racial group in ZIP 95503 is White at 73.3%. Hispanic or Latino residents make up 12.5% of the population.
How many businesses are in ZIP code 95503? ▼
ZIP code 95503 has 335 business establishments employing approximately 2,879 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 95503? ▼
The top industries by establishment count in ZIP 95503 are: Construction (82), Health care and social assistance (61), Retail trade (47). There are 14 industry sectors represented in total.
How have home values changed in ZIP code 95503? ▼
According to the FHFA House Price Index, home values in ZIP 95503 decreased by 3.6% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 210%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 95503? ▼
In ZIP code 95503, 55.3% of residents aged 25+ have a high school diploma or higher, and 29.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 95503? ▼
The mean commute time for workers in ZIP code 95503 is 16.3 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 95503? ▼
In ZIP code 95503, approximately 69.5% of occupied housing units are owner-occupied and 30.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 95503? ▼
The poverty rate in ZIP code 95503 is 13.8% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.