Issaquah, WA 98027 ZIP Code Profile

Related Place Profiles:
Coal Creek, WA | Issaquah, WA | Pine Lake, WA

Camera Icon Photos of the local Issaquah, WA area

ZIP Code 98027: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Issaquah, WA 98027

Not Acceptable, USPS
Coal Creek, WA 98027
Pine Lake, WA 98027

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 1,811
  • Single Family Addresses: 8,521
  • Multi-Family Addresses: 2,244
  • County: King County
  • Centroid: Latitude 47.533, Longitude -122.069
  • 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.


98027 ZIP Code Map

Search the map for:

Issaquah, WA 98027 Data & Demographics (As of July 1, 2017)


Total Population 26,633
Daytime Population: Workers 23,161
Daytime Population: Residents 12,427
Total Daytime Population (TDP) 35,588
Ratio TDP/Total Population1 1.34
Population in Households 26,299
Population in Familes 21,520
Population in Group Qrtrs 334
Population Density2 459
Diversity Index3 42


Median Household Income $103,941
Average Household Income $145,022
Per Capita Income $58,465


Total Housing Units 11,279 (100%)
Owner Occupied HU 7,656 (67.9%)
Renter Occupied HU 3,012 (26.7%)
Vacant Housing Units 611 ( 5.4%)
Median Home Value $593,803
Average Home Value $627,041


Total Households 10,668
Average Household Size 2.47
Family Households 7,298
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 1.31% 1.3%
Households 1.14% 1.17%
Families 1.19% 1.19%
Median Household Income   1.54%
Per Capita Income   2.01%

Issaquah, WA 98027 - Peer Comparisons by Rank and Percentile

The table below compares 98027 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 # 110 81st
Population Density # 202 66th
Diversity Index # 248 58th
Median Household Income # 18 97th
Per Capita Income # 21 97th

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

Washington Research Tools

Washington Census Data Comparison Tool

Compare Washington Census Data
Highest or Lowest: