Oak Harbor, WA 98278 ZIP Code Profile

Related Place Profiles:
Oak Harbor, WA

ZIP Code 98278: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Oak Harbor, WA 98278

Acceptable Alternative
Nas Whidbey, WA 98278
Whidbey Island Naval Air, WA 98278

Not Acceptable, USPS
Naval Air Station, WA 98278
Whidbey Nas, WA 98278

  • County: Island County
  • Centroid: Latitude 48.282, Longitude -122.626
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1
  • PO Box Addresses: 0
  • Residential Addresses: 0
    • Multi-Family Addresses: 0
    • Single Family Addresses: 0

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


98278 ZIP Code Map

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Oak Harbor, WA 98278 Data & Demographics (As of July 1, 2017)


Total Population 2,847
Daytime Population: Workers 14,250
Daytime Population: Residents 118
Total Daytime Population (TDP) 14,368
Ratio TDP/Total Population1 5.05
Population in Households 91
Population in Familes 28
Population in Group Qrtrs 2,756
Population Density2 690
Diversity Index3 67


Median Household Income $40,973
Average Household Income $44,893
Per Capita Income $8,102


Total Housing Units 13 (100%)
Owner Occupied HU 1 ( 7.7%)
Renter Occupied HU 12 (92.3%)
Vacant Housing Units 0
Median Home Value $25,000
Average Home Value $25,000


Total Households 13
Average Household Size 7.0
Family Households 9
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 14.09% 0.11%
Households 0.0% 1.49%
Families 1.64% 0.0%
Median Household Income   4.06%
Per Capita Income   -0.01%

Oak Harbor, WA 98278 - Peer Comparisons by Rank and Percentile

The table below compares 98278 to the other 585 ZIP Codes in Washington by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 341 42nd
Population Density # 181 69th
Diversity Index # 89 85th
Median Household Income # 507 14th
Per Capita Income # 573 2nd

Additional comparisons and rankings can be made with a VERY EASY TO USE Washington Census Data Comparison Tool.

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