Census 2010: Washington › Kennewick

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Square miles: 28.4 Population per sq. mile: 2,744.5

  • 2010 population: 73,917
  • 2000 population: 54,693
  • Total change: 19,224 (35.1%)

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2010 population by race/ethnicity

Diversity Index: 49.4%
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: 32.6 years old

Kennewick population

Race/ethnicity2010 population2010 percentage2000 population2000 percentage2000-2010 change
American Indian/Alaska Native6270.8%5070.9%23.7%
Native Hawaiian/Pacific Islander1480.2%590.1%150.8%
Other race8,93812.1%5,1429.4%73.8%
Two or more races3,1464.3%1,8453.4%70.5%
*Hispanic origin17,90924.2%8,50315.5%110.6%

*Residents of Hispanic origin can be of any race.

Ages 0-17

Population: 20,812 (28.2%)

Diversity Index: 72.8%

Ages 18+

Population: 53,105 (71.8%)

Diversity Index: 52.5%

Race/ethnicityAges 0-17% of 0-17 totalAges 18+% of 18+ total
American Indian/Alaska Native1620.8%4650.9%
Native Hawaiian/Pacific Islander540.3%940.2%
Other race3,71617.9%5,2229.8%
Two or more races1,6467.9%1,5002.8%
*Hispanic origin7,78537.4%10,12419.1%

*Residents of Hispanic origin can be of any race.

Population36,899 (49.9%)
Median age31.6
Population37,018 (50.1%)
Median age33.6
Age breakdown by gender
AgePopulation% of totalMale% of male totalFemale% of female total
Under 1011,88616.1%6,15016.7%5,73615.5%
10 to 19 years11,03114.9%5,66915.4%5,36214.5%
20 to 29 years11,35615.4%5,74515.6%5,61115.2%
30 to 39 years9,58313.0%4,91413.3%4,66912.6%
40 to 49 years9,21312.5%4,53912.3%4,67412.6%
50 to 59 years9,14312.4%4,55912.4%4,58412.4%
60 to 69 years6,1718.3%3,0198.2%3,1528.5%
70 to 79 years3,1954.3%1,4513.9%1,7444.7%
80 and older2,3393.2%8532.3%1,4864.0%

*Residents of Hispanic origin can be of any race.

Household types
Families 2010
Avg. size 3.2
Households 18,528 (68.0%)
Non-families 2010
Avg. size 2.7
Households 8,738 (32.0%)
Family composition
Households ‡ 2010 % of households % of families
Husband-wife family, without children 7,365 27.0% ...
Husband-wife family, with children under 18 years 6,077 22.3% ...
Single male, no children (with other family) 596 2.2% ...
Single male, with children under 18 years 958 3.5% ...
Single female, no children (with other family) 1,123 4.1% ...
Single female, with children under 18 years 2,409 8.8% ...
Single male living alone 3,320 12.2% n/a
Single female living alone 3,685 13.5% n/a
Other non-family households (ex.: roommates) 1,733 6.4% n/a
Total 27,266 100% n/a
Family households 18,528 68.0% 100%
Families with children under 18 years 9,444 34.6% ...
Non-family households 8,738 32.0% n/a
All households with individuals 65 years and over 5,845 21.4% 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 size2.8
Avg. household size2.5
Vacancy Rate2010
Owner-occupied properties1.5%
Renter-occupied properties4.7%
Overall vacancy rate4.4%
Housing Units2010% of total
Vacant1,241 4.4%
For rent5181.8%
Rented, but unoccupied520.2%
For sale2520.9%
Sold, but unoccupied830.3%
Seasonal use only1010.4%
Other vacant units2350.8%

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