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CITY · 2000 CENSUS

Black Diamond

Washington · 3,970 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 $67,092. The city has more than doubled in size since 1990, adding 2,548 residents. Median home value has more than doubled since 1990, reaching $182,100. Poverty is rare here, at 0.9% of residents. Households here earn about 47% more than the Washington median.

At a glance
Wealthier
above the US median
US median: $42,589
Mid-age
median age 35.7
US median: 35.2
Average education
22% hold a bachelor's degree
US average: 24%
Less affordable
home values up 68%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

3,970
+179%since 1990
from 1,422 in 1990
1990 – 2025
602 / sq mi
+179%since 1990
from 216 / sq mi in 1990
US average: 242
35.7
+12%since 1990
from 31.8 in 1990
US average: 35.2
Population, 19902024
9682K4K5K6K1990201020202024Black Diamond
20246K
1990201020202024
Section 02

Income & economy

$67,092
+81%inflation adjusted, since 1990
from $28,155 in 1990
US average: $42,589
1990 – 2024
$26,936
+119%since 1990
from $12,291 in 1990
US average: $21,522
0.9%
−7.6 ptssince 1990
from 8.6% in 1990
US average: 12.4%
Section 03

Housing

$182,100
+68%inflation adjusted, since 1990
from $82,300 in 1990
US average: $120,530
1990 – 2024
$878
+46%inflation adjusted, since 1990
from $457 in 1990
US average: $602
90.1%
+6.6 ptssince 1990
from 83.5% in 1990
9.9% rent
2.7
−7%since 1990
from 2.9 in 1990
1990 – 2024
RELATED:See current rent listings in Black Diamond on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic96.7%(1,375)
Black0.3%(4)
Hispanic / Latino1.9%(27)
Asian1.4%(20)
Diversity Score12.3%(175)
2000
White, non-Hispanic91.9%(3,650)
Black0.1%(3)
Hispanic / Latino2.7%(107)
Asian1%(40)
Diversity Score9.6%(380)
10
−23%since 1990
from 12 in 1990
1990 – 2024
Section 05

Education

21.8%
+14.6 ptssince 1990
from 7.3% in 1990
US average: 24.4%
High school or higher
87.5%
+13.5 ptssince 1990
from 74.1% in 1990
US average: 80.3%
7.1%
+5.9 ptssince 1990
from 1.3% in 1990
US average: 8.8%
Section 06

Commute & transportation

30.9 min
+7%since 1990
from 29.0 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

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Frequently asked

How many people live in Black Diamond, Washington?

Black Diamond, Washington has about 3,970 residents according to the 2000 Census.

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

The typical household in Black Diamond, Washington earns about $67,092 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 $182,100, and the typical rent is about $878 a month.

How educated are people in Black Diamond, Washington?

About 21.8% 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 0.9% 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 2,548 residents, a change of about 179 percent over that period.

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

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