98278 ZIP Code — Oak Harbor, WA

Island County, Washington

ZIP code 98278 is located in Oak Harbor, Washington, within Island County. It covers approximately 4.22 square miles and serves a population of 2,351 residents. This is a standard ZIP code in the Pacific (PT) timezone, served by area code 360/564.

About ZIP code 98278

The housing stock consists of a mix of housing types.

The dominant occupation class is management, business, and professional, with arts, entertainment, and food service as the leading industry. The average commute of 5 minutes is near the national average.

Educational attainment is near the national average, with 23% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 18% of civilians, above the national average of 7%.

2,351

population

4.22

sq mi land

Standard

ZIP type

Pacific (PT)

timezone

98278 ZIP code map

Cities in ZIP code 98278

Below are the cities the US Postal Service accepts for ZIP code 98278. Using any city not on this list may result in mail delivery delays.

City	Status
Oak Harbor	Acceptable
Oak Harbor	Acceptable
Oak Harbor	Preferred

Nearby ZIP codes

98277 Oak Harbor (1.8 mi) 98257 La Conner (8.5 mi) 98239 Coupeville (11.2 mi) 98221 Anacortes (12.3 mi) 98273 Mount Vernon (14.4 mi) 98282 Camano Island (15.7 mi) 98261 Lopez Island (16.2 mi) 98222 Blakely Island (16.9 mi) 98253 Greenbank (17.4 mi) 98232 Bow (18.4 mi) 98292 Stanwood (19 mi) 98233 Burlington (19.2 mi)

Demographics updated 06/2026

Population
Total population	2,351
Population density	557 / sq mi
State FIPS	53
County FIPS	029

Geography
Land area	4.22 sq mi
Water area	1.42 sq mi
Latitude	48.3404
Longitude	-122.6601
Timezone	Pacific (PT)
Area code	360/564

Total population by age

Gender

Race & ethnicity

Demographics & statistics

2,351

Population

557

People per sq mi

22.2

Median age

Median household income

$27,486

Per capita income

Median home value

Median monthly rent

0.0%

Home ownership

0.0%

Poverty rate

0.0%

Unemployment

Housing units

22.8%

Bachelor's or higher

Age distribution

Male Female

305

15–19

1,370

20–24

249

300

25–34

35–44

← Male

Female →

Age summary

Group	Count	%
Under 18	0	0.0%
18 and over	2,351	100.0%
65 and over	0	0.0%
Median age	22.2 years

Race & ethnicity

White 42.6%

Hispanic or Latino 15.6%

Other race 12.5%

Black or African American 10.2%

Two or more races 7.6%

American Indian / Alaska Native 6.1%

Asian 5.5%

Group	Count	%
White	1,186	42.6%
Hispanic or Latino	435	15.6%
Other race	347	12.5%
Black or African American	284	10.2%
Two or more races	212	7.6%
American Indian / Alaska Native	170	6.1%
Asian	152	5.5%

Household income

Housing

Home values

Housing overview

Metric	Value
Median home value	$0
Median rent / month	$0
Owner occupied	0.0%
Renter occupied	0.0%
Vacant	0.0%
Single-family detached	0.0%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	0.0
Avg household size (owned)	0.00

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	0.0%
1990–1999	0.0%
1980–1989	0.0%
1970–1979	0.0%
1960–1969	0.0%
1950–1959	0.0%
1940–1949	0.0%
1939 or earlier	0.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	0.0%
3 bedrooms	0.0%
4 bedrooms	0.0%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	0.0%
2 vehicles	0.0%
3 or more	0.0%

Heating fuel

Fuel type	%

Households & families

Household type	Count	%
Married-couple family	0	0.0%
Cohabiting couple	0	0.0%
Male householder, no spouse	0	0.0%
Female householder, no spouse	0	0.0%
Households with children under 18	0	0.0%
Households with seniors (65+)	0	0.0%
Average household size	0.00

Marital status

Status	Male	Female
Never married	94.0%	100.0%
Married	5.4%	0.0%
Separated	0.0%	0.0%
Widowed	0.0%	0.0%
Divorced	0.6%	0.0%

Education

Less than 9th grade 0.0%

Some HS, no diploma 0.0%

HS graduate 37.6%

Some college, no degree 31.2%

Associate's degree 8.3%

Bachelor's degree 9.4%

Graduate / professional 13.4%

Metric	%
HS diploma or higher	100.0%
Bachelor's or higher	22.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	0	0.0%
High school	2	0.7%
College / grad school	302	99.3%

Employment

Industry of employment

Arts, food & hospitality 57.9%

Education & healthcare 42.1%

Occupation

Category	%
Management, business & arts	57.9%
Service	42.1%
Sales & office	0.0%
Natural resources & construction	0.0%
Production & transportation	0.0%

Employment type

Type	%
Private sector	100.0%
Government	0.0%
Self-employed	0.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	67.2%
Carpool	19.5%
Public transit	0.0%
Walk	12.9%
Work from home	0.3%
Other means	0.0%
Avg commute (minutes)	5.0

Poverty

All people 0.0%

Under 18 years 0.0%

18 and over 0.0%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	0.0%
Retirement income	0.0%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
Obesity	26.5%
High blood pressure	12.4%
High cholesterol	9.9%
Diabetes	2.0%
Heart disease	1.2%
Stroke	0.7%
Asthma	10.8%
Arthritis	4.8%
Kidney disease	1.0%
Pulmonary disease	2.3%
Cancer	0.7%

Behavior / access	%
Smoking	14.0%
Binge drinking	25.3%
No physical activity	16.5%
Less than 7 hrs sleep	31.9%
Depression	25.9%
Fair or poor health	10.5%
Poor mental health	20.5%
Poor physical health	6.5%
No health insurance	16.8%
Visited doctor (checkup)	60.0%
Visited dentist	54.8%
Cholesterol screening	62.2%
Teeth loss	0.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	10	17.9%

Disability	%
Any disability	0.0%
Under 18	0.0%
18–64 years	0.0%
65 and over	0.0%

Health insurance coverage

Type	%
Private insurance	0.0%
Public insurance	0.0%
No insurance	0.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,351	100.0%
Spanish	206	8.8%
Other Indo-European	170	7.2%
Asian & Pacific Islander	0	0.0%
Other languages	36	1.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,112	89.8%
Born in same state	2,070	88.0%
Born in different state	12	0.5%
Foreign born	42	1.8%
Naturalized citizen	239	10.2%
Not a US citizen	144	60.3%

Ancestry

Ancestry	Count	%
Italian	32	1.4%
Polish	14	0.6%
German	10	0.4%

Ancestry	Count	%
French	7	0.3%
Arab	4	0.2%

Technology access

Metric	% of households
Computer access	0.0%
Internet access	0.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 98278

What city is ZIP code 98278 in?

ZIP code 98278 is primarily assigned to Oak Harbor, Washington.

What county is ZIP code 98278 in?

ZIP code 98278 falls within Island County, Washington.

Does ZIP code 98278 have a large veteran population?

18% of civilians in ZIP code 98278 are veterans, above the national average of ~7%.

What is the population of ZIP code 98278?

ZIP code 98278 has an estimated population of 2,351 residents, with a density of 557 people per square mile.

What timezone is ZIP code 98278 in?

ZIP code 98278 observes the PST timezone.