Oak Harbor, WA 98278 ZIP Code Profile

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Oak Harbor, WA

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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

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

Neighborhood 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 certain data.


98278 ZIP Code Map

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Oak Harbor, WA 98278 Data & Demographics (As of July 1, 2016)


Total Population 1,444
Population in Households 443
Population in Familes 342
Population in Group Qrtrs 1,001
Population Density1 296
Diversity Index2 67


Total Households 80
Average Household Size 5.54
Family Households 51
Average Family Size 7


Total Housing Units 99 (100%)
Owner Occupied HU 7 ( 7.1%)
Renter Occupied HU 73 (73.7%)
Vacant Housing Units 19 (19.2%)
Median Home Value $225,000
Average Home Value $178,571


Median Household Income $40,188
Average Household Income $43,132
Per Capita Income $9,006
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 2.6% 0.06%
Households 0.0% 0.0%
Families -0.31% 0.0%
Median Household Income   2.84%
Per Capita Income   0.48%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

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, 2016 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 # 388 34th
Population Density1 # 232 61st
Diversity Index2 # 85 85th
Median Household Income # 489 17th
Per Capita Income # 572 2nd

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