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CITY · 2020 ACS

Black Diamond

Washington · 4,697 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 $111,250. Population has grown 18% since 2000. Median home value has more than doubled since 2000, reaching $464,300. Poverty is rare here, at 2.7% of residents. Households here earn about 44% more than the Washington median.

At a glance
Wealthier
above the US median
US median: $66,278
Mid-age
median age 39.7
US median: 38.8
More educated
43% hold a bachelor's degree
US average: 33%
Less affordable
home values up 70%, inflation adjusted
US median home: $265,253
Section 01

Population & growth

Total population
4,697
+18%since 2000
from 3,970 in 2000
1990 – 2025
Median age
39.7
+11%since 2000
from 35.7 in 2000
US average: 38.8
Population, 1990 – 2024
9682K4K5K6K1990201020202024Black Diamond
20246K
1990201020202024
Age distribution, 2020
Under 56.4%(300)
US avg: 5.6%
5 to 96.2%(290)
US avg: 6.1%
10 to 145.7%(268)
US avg: 6.5%
15 to 196.6%(309)
US avg: 6.6%
20 to 244.7%(222)
US avg: 6.7%
25 to 3413.7%(645)
US avg: 13.5%
35 to 4413.3%(625)
US avg: 12.7%
45 to 5413.3%(626)
US avg: 12.3%
55 to 6416.2%(761)
US avg: 13.1%
65 to 748.8%(412)
US avg: 10%
75 to 843.7%(176)
US avg: 4.9%
85 and over1.3%(63)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$111,250
+10%inflation adjusted, since 2000
from $67,092 in 2000
US average: $66,278
1990 – 2024
Per capita income
$51,018
+89%since 2000
from $26,936 in 2000
US average: $35,364
Households earning $100K+
69.4%
+12.4 ptssince 2009
from 57.0% in 2009
US average: 43.9%
Poverty rate
2.7%
+1.8 ptssince 2000
from 0.9% in 2000
US average: 12.8%
Workforce by industry, 2020
Wholesale trade11%
US avg: 6.7%
Other services10.2%
US avg: 6.6%
Finance & insurance9.9%
US avg: 5.5%
Professional, scientific, technical9.5%
US avg: 4.7%
Retail trade7.9%
US avg: 10%
Information7.6%
US avg: 11.1%
Public administration6.4%
US avg: 4.7%
Transportation & warehousing4%
US avg: 2.5%
Arts, entertainment, food1.7%
US avg: 2%
Education & health services0.3%
US avg: 0.8%
Agriculture, forestry, fishing0.3%
US avg: 1.7%
Construction0.3%
US avg: 1.2%
Manufacturing0%
US avg: 0.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$464,300
+70%inflation adjusted, since 2000
from $182,100 in 2000
US average: $265,253
1990 – 2024
Median gross rent
$1,710
+30%inflation adjusted, since 2000
from $878 in 2000
US average: $1,124
Owner-occupied
85.9%
−4.2 ptssince 2000
from 90.1% in 2000
14.1% rent
Afford Score
4.2
+10%since 2009
from 3.8 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
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%
2020
White, non-Hispanic77.8%(3,655)
Black0.7%(34)
Hispanic / Latino10.6%(497)
Asian2.7%(129)
Other1.2%(58)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican5.6%(262)
Spaniard2%(92)
Asian origin
Filipino4.9%(232)
Chinese1.7%(80)
Korean0.3%(16)
Ancestry
German24.8%(1,164)
Irish12.1%(569)
English12%(566)
Norwegian11%(515)
Italian6.6%(310)
American5.2%(246)
French4%(188)
Scottish3.5%(164)
Dutch2.7%(125)
Swedish2.4%(112)
Russian2.3%(106)
Scotch-Irish1.7%(78)
+ 14 more ancestry groups with data
Ukrainian1.3%(60)
British1.2%(58)
Polish1.2%(58)
Welsh0.9%(41)
Hungarian0.8%(37)
Portuguese0.7%(34)
Finnish0.6%(28)
Croatian0.6%(27)
Turkish0.5%(23)
Greek0.3%(16)
Swiss0.3%(16)
Lithuanian0.3%(15)
Canadian0.2%(9)
RANKED:Largest German population · Largest Irish population · Largest English population · Largest Norwegian population · Largest Italian population
Section 05

Education

Bachelor's degree or higher
42.9%
+21.0 ptssince 2000
from 21.8% in 2000
US average: 32.9%
High school or higher
97.1%
+9.6 ptssince 2000
from 87.5% in 2000
US average: 88.5%
Graduate degree
14.0%
+6.9 ptssince 2000
from 7.1% in 2000
US average: 12.7%
Section 06

Commute & transportation

Average commute
36.5 min
+18%since 2000
from 30.9 min in 2000
US average: 26.9
Drive alone to work
80.6%
+7.7 ptssince 2009
from 72.9% in 2009
US average: 75.1%
No vehicle available
1.5%
+0.5 ptssince 2009
from 0.9% in 2009
US average: 8.4%
Section 07

Work & employment

Unemployment rate
1.8%
−2.1 ptssince 2011
from 4.0% in 2011
US average: 5.4%
Labor force participation
72.7%
−0.3 ptssince 2011
from 72.9% in 2011
US average: 63.4%
Management & professional
43.5%
−23.6 ptssince 2009
from 67.0% in 2009
US average: 39.3%
Section 08

People & community

Male
49.2%
Unchangedsince 2009
from 49.1% in 2009
Female
50.8%
Unchangedsince 2009
from 50.9% in 2009
Foreign born
10.5%
+6.4 ptssince 2009
from 4.1% in 2009
US average: 13.5%
Uninsured
4.7%
−89.2 ptssince 2013
from 93.9% in 2013
US average: 8.8%
Marital status (2024)
Men 15+
Never married30.1%(778)
Married60.9%(1,577)
Widowed2.5%(64)
Divorced6.6%(170)
Women 15+
Never married21.6%(460)
Married65.4%(1,392)
Widowed5.1%(109)
Divorced7.9%(168)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
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Frequently asked

How many people live in Black Diamond, Washington?

Black Diamond, Washington has about 4,697 residents according to the 2020 American Community Survey.

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

The typical household in Black Diamond, Washington earns about $111,250 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 $464,300, and the typical rent is about $1,710 a month.

How educated are people in Black Diamond, Washington?

About 42.9% 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 2.7% 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 3,275 residents, a change of about 230 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 →