Census 2010: Washington › Kirkland

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Square miles: 11.1 Population per sq. mile: 4,522.8

  • 2010 population: 48,787
  • 2000 population: 45,054
  • Total change: 3,733 (8.3%)

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2010 population by race/ethnicity

Diversity Index: 40.4%
The USA TODAY Diversity Index represents the probability that two people from this area will have different ethnic backgrounds. A higher number reflects a more ethnically diverse population.

Age breakdown Median: 37.5 years old

Kirkland population

Race/ethnicity2010 population2010 percentage2000 population2000 percentage2000-2010 change
American Indian/Alaska Native2020.4%2380.5%-15.1%
Native Hawaiian/Pacific Islander1340.3%890.2%50.6%
Other race1,2362.5%7611.7%62.4%
Two or more races2,1784.5%1,3172.9%65.4%
*Hispanic origin3,0856.3%1,8524.1%66.6%

*Residents of Hispanic origin can be of any race.

Ages 0-17

Population: 9,160 (18.8%)

Diversity Index: 56.2%

Ages 18+

Population: 39,632 (81.2%)

Diversity Index: 40.0%

Race/ethnicityAges 0-17% of 0-17 totalAges 18+% of 18+ total
American Indian/Alaska Native490.5%1530.4%
Native Hawaiian/Pacific Islander300.3%1040.3%
Other race3123.4%9242.3%
Two or more races97610.7%1,2023.0%
*Hispanic origin9049.9%2,1815.5%

*Residents of Hispanic origin can be of any race.

Population23,745 (48.7%)
Median age36.2
Population25,042 (51.3%)
Median age38.8
Age breakdown by gender
AgePopulation% of totalMale% of male totalFemale% of female total
Under 105,53011.3%2,82011.9%2,70010.8%
10 to 19 years4,5809.4%2,3009.7%2,2809.1%
20 to 29 years8,04016.5%4,05017.1%3,99015.9%
30 to 39 years8,37017.2%4,31018.2%4,04016.1%
40 to 49 years7,60015.6%3,72015.7%3,88015.5%
50 to 59 years6,66013.7%3,20013.5%3,46013.8%
60 to 69 years4,4209.1%1,9608.2%2,4609.8%
70 to 79 years2,0104.1%8293.5%1,1804.7%
80 and older1,5803.2%5402.3%1,0404.2%

*Residents of Hispanic origin can be of any race.

Household types
Families 2010
Avg. size 2.8
Households 12,014 (53.5%)
Non-families 2010
Avg. size 2.2
Households 10,431 (46.5%)
Family composition
Households ‡ 2010 % of households % of families
Husband-wife family, without children 5,534 24.7% ...
Husband-wife family, with children under 18 years 3,961 17.6% ...
Single male, no children (with other family) 412 1.8% ...
Single male, with children under 18 years 392 1.8% ...
Single female, no children (with other family) 801 3.6% ...
Single female, with children under 18 years 914 4.1% ...
Single male living alone 3,541 15.8% n/a
Single female living alone 4,549 20.3% n/a
Other non-family households (ex.: roommates) 2,341 10.4% n/a
Total 22,445 100% n/a
Family households 12,014 53.5% 100%
Families with children under 18 years 5,267 23.5% ...
Non-family households 10,431 46.5% n/a
All households with individuals 65 years and over 3,997 17.8% n/a

‡ United States Census Bureau definitions:

Household — A household includes all of the people who occupy a housing unit. People not living in households are classified as living in group quarters. (Ex: college residence halls, skilled-nursing facilities, military barracks, …)
Family — A family includes a householder and one or more people living in the same household who are related to the householder by birth, marriage, or adoption.
Non-family Household — A householder living alone or with nonrelatives only.

Note: Family households and husband-wife-couple families do not include same-sex married couples even if the marriage was performed in a state issuing marriage certificates for same-sex couples. Same-sex-couple households are included in the family households category if there is at least one additional person related to the householder by birth or adoption. Same-sex-couple households with no relatives of the householder present are tabulated in nonfamily households.

Housing Units
Avg. household size2.3
Avg. household size1.9
Vacancy Rate2010
Owner-occupied properties3%
Renter-occupied properties7.2%
Overall vacancy rate7.8%
Housing Units2010% of total
Vacant1,900 7.8%
For rent7523.1%
Rented, but unoccupied760.3%
For sale3951.6%
Sold, but unoccupied580.2%
Seasonal use only2941.2%
Other vacant units3251.3%

Credits: Ryan Pitts, Mike Tigas Special thanks: USA Today Census team