Census 2010: Washington › Black Diamond

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Black Diamond

Square miles: 6.7 Population per sq. mile: 690.1

  • 2010 population: 4,151
  • 2000 population: 3,970
  • Total change: 181 (4.6%)

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2010 population by race/ethnicity

Diversity Index: 20.9%
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: 40.4 years old

Black Diamond population

Race/ethnicity2010 population2010 percentage2000 population2000 percentage2000-2010 change
American Indian/Alaska Native310.7%621.6%-50.0%
Native Hawaiian/Pacific Islander120.3%20.1%500.0%
Other race541.3%350.9%54.3%
Two or more races1393.3%1193.0%16.8%
*Hispanic origin1934.6%1072.7%80.4%

*Residents of Hispanic origin can be of any race.

Ages 0-17

Population: 1,047 (25.2%)

Diversity Index: 34.2%

Ages 18+

Population: 3,104 (74.8%)

Diversity Index: 18.7%

Race/ethnicityAges 0-17% of 0-17 totalAges 18+% of 18+ total
American Indian/Alaska Native50.5%260.8%
Native Hawaiian/Pacific Islander20.2%100.3%
Other race161.5%381.2%
Two or more races777.4%622.0%
*Hispanic origin807.6%1133.6%

*Residents of Hispanic origin can be of any race.

Population2,069 (49.8%)
Median age40.7
Population2,082 (50.2%)
Median age40
Age breakdown by gender
AgePopulation% of totalMale% of male totalFemale% of female total
Under 1052312.6%25812.5%26512.7%
10 to 19 years63415.3%30414.7%33015.9%
20 to 29 years3939.5%2009.7%1939.3%
30 to 39 years49511.9%24211.7%25312.2%
40 to 49 years76018.3%37918.3%38118.3%
50 to 59 years69716.8%37218.0%32515.6%
60 to 69 years3789.1%1879.0%1919.2%
70 to 79 years1854.5%844.1%1014.9%
80 and older862.1%432.1%432.1%

*Residents of Hispanic origin can be of any race.

Household types
Families 2010
Avg. size 3.1
Households 1,157 (74.8%)
Non-families 2010
Avg. size 2.7
Households 389 (25.2%)
Family composition
Households ‡ 2010 % of households % of families
Husband-wife family, without children 536 34.7% ...
Husband-wife family, with children under 18 years 422 27.3% ...
Single male, no children (with other family) 26 1.7% ...
Single male, with children under 18 years 40 2.6% ...
Single female, no children (with other family) 64 4.1% ...
Single female, with children under 18 years 69 4.5% ...
Single male living alone 157 10.2% n/a
Single female living alone 119 7.7% n/a
Other non-family households (ex.: roommates) 113 7.3% n/a
Total 1,546 100% n/a
Family households 1,157 74.8% 100%
Families with children under 18 years 531 34.3% ...
Non-family households 389 25.2% n/a
All households with individuals 65 years and over 303 19.6% 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 size2.7
Avg. household size2.6
Vacancy Rate2010
Owner-occupied properties1.5%
Renter-occupied properties8.6%
Overall vacancy rate8.2%
Housing Units2010% of total
Vacant139 8.2%
For rent231.4%
Rented, but unoccupied10.1%
For sale201.2%
Sold, but unoccupied10.1%
Seasonal use only452.7%
Other vacant units492.9%

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