Oak Harbor, WA · standard
ZIP Code 98278
Island County, Washington - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,065
- 78/sq mi Moderate-density area
- 13.8%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Oak Harbor has 1,065 residents, placing it in the 31st percentile of the 33,099 US ZIP codes with a reported population, at 78 people per square mile.
Source: USPS ZIP record + U.S. Census Bureau ZIP population. Rank compares ZIP 98278 against every US ZIP with a reported population; income/home-value percentiles are not available for this ZIP.
ZIP code 98278 is a sparsely populated ZIP (a standard USPS delivery area) in Oak Harbor, Island County, Washington, home to just 1,065 residents across 13.6 square miles, a density of 78 people per square mile, in the Los Angeles time zone.
Median household income is not on file for ZIP 98278, but per-capita income is $26,907. The poverty rate is -, with unemployment at 0.0%; those measures add context to the income figure. The ACS does not report a median home value for this ZIP, so housing cost context is limited to the available tenure and rent fields.
Formal educational attainment runs low here: just 13.8% of adults hold a bachelor's degree or higher, the median age is 22, and the average commute is 6 minutes. The page also surfaces 2 ZIP codes within roughly 10 miles and 6 more in Island County, so 98278 can be compared with both its immediate and county-level context.
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 98278
Top 5 sectors by establishment count in Oak Harbor, WA
Which industries have the most business establishments in ZIP 98278.
- Professional, scientific, and technical services
Professional, scientific, and technical services
13 establishments
- Health care and social assistance 4
Health care and social assistance
4 establishments
- Transportation and warehousing 3
Transportation and warehousing
3 establishments
- Educational services 3
Educational services
3 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, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 98278, Oak Harbor, WA · 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
1,065
Population
13.6
Area (sq mi)
78
People / sq mi
Los Angeles
Time Zone
standard
ZIP Type
Who lives in ZIP 98278?
22.0
Median Age
82.1%
Male
17.9%
Female
10.6%
Foreign-Born
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?
$26,907
Per Capita Income
0.0%
Unemployment Rate
6.2 min
Mean Commute Time
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
0
Total Housing Units
0
Occupied Units
0
Vacant Units
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 29 business establishments in ZIP 98278, employing approximately 1,024 people with a combined annual payroll of $60,910,000.
29
Businesses
1,024
Employees
$60.9M
Annual Payroll
4
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Professional, scientific, and technical services | 13 | 44.8% |
| Health care and social assistance | 4 | 13.8% |
| Transportation and warehousing | 3 | 10.3% |
| Educational services | 3 | 10.3% |
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 98278 vs 98277 →
ZIP 98278 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 98277
Oak Harbor (98277)
37,823 residents
- 98239 6,646
Coupeville (98239)
6,646 residents
- 98278 1,065
Oak Harbor (98278)
1,065 residents
What this shows Among its immediate neighbors, ZIP 98278 ranks #3 by population - useful context the national average alone can't give.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 98278, both outside WA so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (1,065 here; floor ≥1,000).
More ZIP Codes in Island County
Related Areas
Frequently Asked Questions
What county is ZIP code 98278 in?
ZIP code 98278 (Oak Harbor) is located in Island County, Washington. Island County contains multiple ZIP codes, see the full list at /counties/island-wa.
What is the population of ZIP code 98278?
ZIP code 98278 in Oak Harbor, WA has a population of 1,065 according to the Census Bureau ACS 2023 estimates.
What is the demographic makeup of ZIP 98278?
The largest racial group in ZIP 98278 is White at 41.5%. Hispanic or Latino residents make up 32.7% of the population.
How many businesses are in ZIP code 98278?
ZIP code 98278 has 29 business establishments employing approximately 1,024 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 98278?
The top industries by establishment count in ZIP 98278 are: Professional, scientific, and technical services (13), Health care and social assistance (4), Transportation and warehousing (3). There are 4 industry sectors represented in total.
What is the education level in ZIP code 98278?
In ZIP code 98278, 54.0% of residents aged 25+ have a high school diploma or higher, and 13.8% 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 98278?
The mean commute time for workers in ZIP code 98278 is 6.2 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
Related
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What to do with ZIP 98278's numbers, next.
- See how ZIP 98278 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Oak Harbor, WA ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.