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
- 13.8%
- Bachelor's or higher
ZIP code 98278 is classified by USPS as a standard delivery area and covers roughly 13.6 square miles in Oak Harbor, Island County, Washington. The area is home to 1,065 residents, producing a population density of 78 people per square mile, and falls within the Los Angeles time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 98278 against Washington and the nation.
On the economic side, the median household income for ZIP 98278 sits at —, while per-capita income is $26,907. The poverty rate stands at — and the unemployment rate at 0.0%. On housing, the median home value is — with median rent at — per month, and — of occupied units are owner-occupied, a direct signal of whether 98278 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 13.8% of adults hold a bachelor's degree or higher, the median age is 22, and the average commute is 6 minutes. We also surface 2 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Island County, so you can benchmark 98278 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 98278
Top 5 sectors by establishment count
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 + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, 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; HUD FMR + 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.
More ZIP Codes in Island County
Related Areas
Frequently Asked Questions
What county is ZIP code 98278 in? ▼
What is the population of ZIP code 98278? ▼
What is the demographic makeup of ZIP 98278? ▼
How many businesses are in ZIP code 98278? ▼
What are the main industries in ZIP code 98278? ▼
What is the education level in ZIP code 98278? ▼
What is the average commute time in ZIP 98278? ▼
ZIP Code Research Guides
Official Data Resources for Oak Harbor, WA
Verify and explore additional data for this area using these official government sources.
Read our methodology to see how this data is sourced, computed, and verified.