Seattle, WA 98166 ZIP Code Profile

Related Place Profiles:
Burien, WA | Normandy Park, WA | Seattle, WA

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ZIP Code 98166: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Seattle, WA 98166

Acceptable Alternative
Burien, WA 98166
Normandy Park, WA 98166

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 895
  • Single Family Addresses: 7,254
  • Multi-Family Addresses: 1,653
  • County: King County
  • Centroid: Latitude 47.447, Longitude -122.357
  • 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.


98166 ZIP Code Map

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Seattle, WA 98166 Data & Demographics (As of July 1, 2017)


Total Population 22,515
Daytime Population: Workers 10,776
Daytime Population: Residents 11,380
Total Daytime Population (TDP) 22,156
Ratio TDP/Total Population1 0.98
Population in Households 22,459
Population in Familes 17,442
Population in Group Qrtrs 56
Population Density2 3,868
Diversity Index3 63


Median Household Income $72,544
Average Household Income $105,394
Per Capita Income $42,875


Total Housing Units 9,739 (100%)
Owner Occupied HU 5,734 (58.9%)
Renter Occupied HU 3,407 (35.0%)
Vacant Housing Units 598 ( 6.1%)
Median Home Value $464,490
Average Home Value $553,641


Total Households 9,141
Average Household Size 2.46
Family Households 5,840
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 1.2% 1.19%
Households 0.98% 1.06%
Families 1.01% 1.08%
Median Household Income   2.2%
Per Capita Income   2.24%

Seattle, WA 98166 - Peer Comparisons by Rank and Percentile

The table below compares 98166 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 # 145 75th
Population Density # 74 88th
Diversity Index # 111 81st
Median Household Income # 122 79th
Per Capita Income # 67 89th

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

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