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CITY · 2010 ACS

Black Diamond

Washington · 4,151 residents · 6.598 sq mi
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The short version

Black Diamond is significantly wealthier than the US average, with a median household income of $82,802. Population has held roughly steady since 2000. Median home value has risen by half since 2000, reaching $319,700. Poverty is rare here, at 0.4% of residents. Households here earn about 45% more than the Washington median.

At a glance
Wealthier
above the US median
US median: $52,703
Older
median age 40.4
US median: 37.2
Less educated
23% hold a bachelor's degree
US average: 28%
Less affordable
home values up 39%, inflation adjusted
US median home: $225,659
Section 01

Population & growth

Total population
4,151
+5%since 2000
from 3,970 in 2000
1990 – 2025
Population density
629 / sq mi
+5%since 2000
from 602 / sq mi in 2000
US average: 261
Median age
40.4
+13%since 2000
from 35.7 in 2000
US average: 37.2
Population, 1990 – 2024
9682K4K5K6K1990201020202024Black Diamond
20246K
1990201020202024
Section 02

Income & economy

Median household income
$82,802
−3%inflation adjusted, since 2000
from $67,092 in 2000
US average: $52,703
1990 – 2024
Per capita income
$33,342
+24%since 2000
from $26,936 in 2000
US average: $27,286
Households earning $100K+
57.4%
+0.3 ptssince 2009
from 57.0% in 2009
US average: 33.3%
Poverty rate
0.4%
−0.5 ptssince 2000
from 0.9% in 2000
US average: 13.8%
Income inequality (Gini)
0.317
US average: 0.461
Workforce by industry, 2010
Retail trade17.2%
US avg: 10.9%
Wholesale trade14.8%
US avg: 7.2%
Information13.8%
US avg: 11.5%
Finance & insurance8.7%
US avg: 5.1%
Other services8.1%
US avg: 7%
Public administration6.4%
US avg: 4.9%
Professional, scientific, technical6.2%
US avg: 4.2%
Transportation & warehousing3.7%
US avg: 3.1%
Education & health services2.5%
US avg: 0.9%
Arts, entertainment, food2.2%
US avg: 2.4%
Agriculture, forestry, fishing1.3%
US avg: 1.9%
Construction1.3%
US avg: 1.4%
Manufacturing0%
US avg: 0.5%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$319,700
+39%inflation adjusted, since 2000
from $182,100 in 2000
US average: $225,659
1990 – 2024
Median gross rent
$609
−45%inflation adjusted, since 2000
from $878 in 2000
US average: $853
Owner-occupied
66.0%
−24.1 ptssince 2000
from 90.1% in 2000
15.8% rent
Vacancy rate
10.1%
+1.2 ptssince 2009
from 8.9% in 2009
US average: 12.1%
Owner cost-burdened
47.9%
+4.1 ptssince 2009
from 43.8% in 2009
US average: 30.9%
Renter cost-burdened
9.4%
−17.1 ptssince 2009
from 26.5% in 2009
US average: 46.8%
Afford Score
3.9
+42%since 2000
from 2.7 in 2000
1990 – 2024
RELATED:See current rent listings in Black Diamond on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic91.9%(3,650)
Black0.1%(3)
Hispanic / Latino2.7%(107)
Asian1%(40)
Other0%
Diversity Score9.6%(380)
2010
White, non-Hispanic89.1%(3,700)
Black1.1%(47)
Hispanic / Latino4.6%(193)
Asian1.2%(50)
Other0.5%(20)
Diversity Score18.3%(758)
Diversity Score
18
+91%since 2000
from 10 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
23.4%
+1.5 ptssince 2000
from 21.8% in 2000
US average: 27.9%
High school or higher
96.1%
+8.6 ptssince 2000
from 87.5% in 2000
US average: 84.9%
Graduate degree
4.9%
−2.2 ptssince 2000
from 7.1% in 2000
US average: 10.2%
Section 06

Commute & transportation

Average commute
42.3 min
+37%since 2000
from 30.9 min in 2000
US average: 25.2
Drive alone to work
71.7%
−1.2 ptssince 2009
from 72.9% in 2009
US average: 76.2%
Carpooled to work
10.3%
−2.8 ptssince 2009
from 13.1% in 2009
US average: 10.4%
Public transit
3.4%
−0.3 ptssince 2009
from 3.8% in 2009
US average: 4.7%
Worked from home
10.4%
+3.9 ptssince 2009
from 6.5% in 2009
US average: 4.1%
Walked to work
2.2%
−0.5 ptssince 2009
from 2.8% in 2009
US average: 2.8%
Biked to work
1.5%
+1.5 ptssince 2009
from 0.0% in 2009
US average: 0.5%
No vehicle available
0.7%
−0.3 ptssince 2009
from 0.9% in 2009
US average: 8.7%
Section 07

Work & employment

Self-employed
11.3%
+2.0 ptssince 2009
from 9.4% in 2009
US average: 12.9%
Management & professional
36.1%
−30.9 ptssince 2009
from 67.0% in 2009
US average: 35.2%
Section 08

People & community

Male
47.4%
−1.7 ptssince 2009
from 49.1% in 2009
Female
52.6%
+1.7 ptssince 2009
from 50.9% in 2009
Foreign born
4.0%
−0.1 ptssince 2009
from 4.1% in 2009
US average: 12.8%
Veterans
11.0%
−39.3 ptssince 2009
from 50.3% in 2009
US average: 9.9%
Drill deeper

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Compare Black Diamond to nearby cities

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BLACK DIAMOND VS
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BLACK DIAMOND VS
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Frequently asked

How many people live in Black Diamond, Washington?

Black Diamond, Washington has about 4,151 residents according to the 2010 American Community Survey.

What is the median household income in Black Diamond, Washington?

The typical household in Black Diamond, Washington earns about $82,802 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 $319,700, and the typical rent is about $609 a month.

How educated are people in Black Diamond, Washington?

About 23.4% 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 0.4% 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 2,729 residents, a change of about 192 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →

Black Diamond, Washington (2010): demographics, income & housing data · CensusEasy