Sammamish Flag

Sammamish

County:
King County
County Seat:
No
Area (mi²):
20.427
State:
Washington

Sammamish is a city located in King County, Washington. Sammamish has a 2026 population of 65,986. Sammamish is currently declining at a rate of -0.37% annually and its population has decreased by -2.17% since the most recent census, which recorded a population of 67,449 in 2020.

The median household income in Sammamish is $239,690 with a poverty rate of 4.27%. The median age in Sammamish is 39.9 years: 40.4 years for males, and 39.3 years for females. For every 100 females there are 96.0 males.

66K
Total Population
3,230
Density (mi²)
-244 -0.37%
Growth

Sammamish Population

Sammamish Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202665,986-244-0.37%
202566,230-244-0.37%
202466,4746170.94%
202365,857-107-0.16%
202265,964-609-0.91%
202166,573-876-1.3%
202067,449-9-0.01%
201965,8512960.45%
201865,5555370.83%
201765,0181,1041.73%
201663,9145680.9%
201563,3461,0951.76%
201462,2511,1781.93%
201361,0731,0411.73%
201260,0321,2652.15%
201158,76712,98728.37%
201057,6562090.36%
200034,10400%

Median Age

Overall: 39.9 years
Female: 39.3 years
Male: 40.4 years

Sammamish Adults

There are 47,432 adults, (6,048 of whom are seniors) in Sammamish.

Sex Ratio

Female: 33,902 (51%)
Male: 32,561 (49%)

Demographics

The racial composition of Sammamish includes 50.91% White, 37.2% Asian, and smaller percentages for Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White33,83850.91%
Asian24,72437.2%
Two or more races6,2169.35%
Black or African American8851.33%
Other race5170.78%
Native American2330.35%
Native Hawaiian or Pacific Islander500.08%
Race
Population ↓
Percentage (of total)
Two or more races2,2933.45%
White1,1211.69%
Other race2580.39%
Asian360.05%
Native American210.03%
Race
Population ↓
Percentage (of total)
White32,71749.23%
Asian24,68837.15%
Two or more races3,9235.9%
Black or African American8851.33%
Other race2590.39%
Native American2120.32%
Native Hawaiian or Pacific Islander500.08%

Sammamish Marital Status

Economics and Income Statistics

Sammamish 's average per capita income is $137,394. Household income levels show a median of $239,690. The poverty rate stands at 4.27%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Families$250,001$314,783
Married Families$250,001-
Households$239,690$293,336
Non Families$103,476$147,185

$137,394

Average Income

$239,690

Median Household Income

4.27%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)