United States › Washington › Black Diamond CITY
Black Diamond Washington · 6,978 residents (2025 est.) · 6.60 sq mi
Time machine
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The short version
Black Diamond is a city of 5,961 people in Washington. The typical home is worth $779,100, having more than tripled since 2000. This is an unusually credentialed place: 55% of adults have a four-year degree. Owners hold 86% of the housing stock. The population has risen by half since 2000, adding 1,991 people. That puts it in the top 2% of US cities for household income.
At a glance
Wealthier
above the US median
US median: $82,259
Mid-age
median age 38.1
US median: 38.9
More educated
55% hold a bachelor's degree
US average: 36%
Less affordable
home values up 135%, inflation adjusted
US median home: $376,019
Section 01
Population & growth from 3,970 in 2000
6,978 in 2025 (Census Bureau estimate)
903 / sq mi
+49%since 2009
from 608 / sq mi in 2009
US average: 281
from 35.7 in 2000
US average: 38.9
Population, 1990 – 2024
968 2K 4K 5K 6K 1990 2000 2010 2020 2024 Black Diamond Age distribution, 2024
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $141,383
+16%inflation adjusted, since 2000
from $67,092 in 2000
US average: $82,259
from $26,936 in 2000
US average: $44,673
Households earning $100K+
from 57.0% in 2009
US average: 53.3%
from 0.9% in 2000
US average: 12.5%
from 0.317 in 2010
US average: 0.476
Workforce by industry, 2024
Professional, scientific, technical 6.7%
Public administration 4.2%
Transportation & warehousing 2.2%
Arts, entertainment, food 1%
Education & health services 0.7%
Agriculture, forestry, fishing 0.2%
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$779,100
+135%inflation adjusted, since 2000
from $182,100 in 2000
US average: $376,019
$1,453
−9%inflation adjusted, since 2000
from $878 in 2000
US average: $1,442
from 90.1% in 2000
14.0% rent
from 8.9% in 2009
US average: 10.0%
2.57 people
−11%since 2009
from 2.90 people in 2009
US average: 2.54
from 43.8% in 2009
US average: 22.9%
from 26.5% in 2009
US average: 47.4%
from 3.8 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity 2000
White, non-Hispanic 91.9%(3,650)
Hispanic / Latino 2.7%(107)
2024
White, non-Hispanic 67%(3,996)
Hispanic / Latino 7.9%(472)
from 8 in 2009
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 14 more ancestry groups with data from 21.8% in 2000
US average: 35.6%
High school or higher
from 87.5% in 2000
US average: 89.6%
from 7.1% in 2000
US average: 14.0%
Section 06
Commute & transportation from 30.9 min in 2000
US average: 26.5
from 72.9% in 2009
US average: 68.9%
from 13.1% in 2009
US average: 8.5%
from 3.8% in 2009
US average: 3.2%
from 6.5% in 2009
US average: 15.0%
from 2.8% in 2009
US average: 2.4%
from 0.0% in 2009
US average: 0.4%
from 0.9% in 2009
US average: 8.3%
Section 07
Work & employment from 4.0% in 2011
US average: 5.2%
from 72.9% in 2011
US average: 63.5%
Women 20-64 in the labor force
from 80.3% in 2020
US average: 74.6%
from 9.4% in 2009
US average: 13.1%
from 38.6% in 2009
US average: 42.5%
Section 08
People & community from 4.1% in 2009
US average: 14.1%
from 11.8% in 2009
US average: 6.2%
from 8.2% in 2012
US average: 13.3%
from 6.1% in 2013
US average: 8.4%
from 86.8% in 2017
US average: 91.0%
Computer in household
from 96.7% in 2020
US average: 95.5%
from 80.5% in 2020
US average: 87.7%
from 92.9% in 2016
US average: 77.7%
from 4.7% in 2016
US average: 13.6%
Marital status
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 6.1% in 2013
US average: 8.4%
from 73.9% in 2020
US average: 54.8%
Direct-purchase
from 12.9% in 2020
US average: 13.8%
from 18.5% in 2020
US average: 18.4%
from 7.3% in 2020
US average: 20.9%
VA health care
from 0.9% in 2020
US average: 2.2%
Any private
from 84.6% in 2020
US average: 67.1%
Any public
from 22.4% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 6%(16)
Gulf War (1990s) 34.6%(92)
Share of the 266 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
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Frequently asked
How many people live in Black Diamond, Washington? Black Diamond, Washington has about 5,961 residents according to the 2024 American Community Survey.
What is the median household income in Black Diamond, Washington? The typical household in Black Diamond, Washington earns about $141,383 a year. Half of households make more than that, and half make less.
Is Black Diamond, Washington expensive? In Black Diamond, Washington, the median home is worth about $779,100, and the typical rent is about $1,453 a month.
How educated are people in Black Diamond, Washington? About 54.7% of adults age 25 and over in Black Diamond, Washington hold a bachelor's degree or higher.
What is the poverty rate in Black Diamond, Washington? About 2.1% of people in Black Diamond, Washington live below the federal poverty line.
Has Black Diamond, Washington grown since 1990? Yes, Black Diamond, Washington has grown since 1990. The population has added about 4,539 residents, a change of about 319 percent over that period.
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