Issaquah, WA Profile: Facts & Data


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Issaquah, Washington - Basic Facts

The City of Issaquah had a population of 37,378 as of July 1, 2018. Issaquah ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Washington. See peer rankings below.

The primary coordinate point for Issaquah is located at latitude 47.5404 and longitude -122.0421 in King County. The formal boundaries for the City of Issaquah (see map below) encompass a land area of 11.4 sq. miles and a water area of 0.02 sq. miles. King County is in the Pacific time zone (GMT -8). The elevation is 108 feet.

The City of Issaquah (GNIS ID: 2410123) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Washington is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Issaquah is located within Issaquah Plateau Division of King County.

Alternate Unofficial Names for Issaquah: Englewood, Gilman, Isquah, Isquowh, Issquah, Squak, Squawk, Squowh.

Jump to... (On This Page!)
  1. Issaquah 2018 Demographic Data
  2. Growth Rates for Issaquah (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Washington Research Tools (Easy Tools & Current Data)
  3. Washington Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Issaquah, WA Data & Demographics (As of July 1, 2018)


Total Population 37,378
Population in Households 37,014
Population in Familes 30,095
Population in Group Qrtrs 364
Population Density2 3,277
Diversity Index3 54


Median Household Income $113,390
Average Household Income $152,490
Per Capita Income $62,222


Total Housing Units 16,323 (100%)
Owner Occupied HU 9,671 (59.2%)
Renter Occupied HU 5,841 (35.8%)
Vacant Housing Units 812 ( 5.0%)
Median Home Value $618,636
Average Home Value $689,163


Total Households 15,511
Average Household Size 2.39
Family Households 10,177
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 2.52% 2.4%
Households 2.32% 2.3%
Families 2.93% 2.41%
Median Household Income   2.43%
Per Capita Income   2.43%

Issaquah, WA - Peer Comparisons by Rank and Percentile

The table below compares Issaquah to the other 627 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2018 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 # 34 95th
Population Density # 72 89th
Diversity Index # 158 75th
Median Household Income # 31 95th
Per Capita Income # 15 98th

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

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