Black Diamond is a city located in King County Washington. Black Diamond has a 2024 population of 7,187. Black Diamond is currently growing at a rate of 8.86% annually and its population has increased by 48.31% since the most recent census, which recorded a population of 4,846 in 2020.
The average household income in Black Diamond is $172,884 with a poverty rate of 1.14%. The median age in Black Diamond is 38.1 years: 39.9 years for males, and 36.6 years for females.
According to the most recent ACS, the racial composition of Black Diamond was:
Race | Population | Percentage (of total) |
|---|---|---|
| White | 4,239 | 74.66% |
| Asian | 647 | 11.39% |
| Two or more races | 620 | 10.92% |
| Other race | 151 | 2.66% |
| Black or African American | 21 | 0.37% |
| Native American | 0 | 0% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
White
Asian
Two or more races
Other race
Black or African American
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 2,181 | 2.6 | 87 | 13 |
| Married | 1,327 | 3.01 | 94.8 | 5.2 |
| Non Family | 515 | 1.49 | 75.7 | 24.3 |
| Male | 226 | 2.81 | 60.2 | 39.8 |
| Female | 113 | 2.5 | 100 | 0 |
2.92
Average Family Size
2.6
Average Household Size
87.0%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Education Attained | Count | Percentage |
|---|---|---|
| 9th to 12th Grade | 24 | 0.61% |
| Associates Degree | 461 | 11.64% |
| Bachelors Degree | 1,465 | 37% |
| Graduate Degree | 770 | 19.45% |
| High School Graduate | 511 | 12.91% |
| Less Than 9th Grade | 25 | 0.63% |
| Some College | 703 | 17.76% |
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 3,048 | 3,035 | 1,662 |
| Asian | 470 | 470 | 322 |
| 2+ Races | 308 | 297 | 221 |
| Hispanic | 272 | 247 | 147 |
| Other Race | 115 | 90 | 30 |
The highest rate of high school graduation is among asian people with a rate of 100%.
The highest rate of bachelors degrees is among 2+ races people with a rate of 71.75%.
All
Male
Female
Name | Average | Male | Female |
|---|---|---|---|
| Bachelors Degree | $103,438 | $156,964 | $64,868 |
| Graduate Degree | $108,571 | $127,115 | $78,438 |
| High School Graduate | $69,508 | $92,454 | $0 |
| Less Than 9th Grade | $0 | $0 | $0 |
| Overall | $86,221 | $112,271 | $63,234 |
| Some College | $71,375 | $86,366 | $53,990 |
$86,221
Average Earnings
$112,271
Average Male
$63,234
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
86.19% of Black Diamond residents speak only English, while 13.81% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 5.28% of the population.
rate
Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| Multiple | 620 | 48 | 7.74% |
| White | 4,193 | 17 | 0.41% |
1.14%
Overall Poverty Rate
1.03%
Male Poverty Rate
1.27%
Female Poverty Rate
The race most likely to be in poverty in Black Diamond is Multiple, with 7.74% below the poverty level.
The race least likely to be in poverty in Black Diamond is White, with 0.41% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0.65%. Among those working part-time, it was 1.6%, and for those that did not work, the poverty rate was 2.04%.
rate
Rate | Poverty |
|---|---|
| Some College | 1.46% |
| Bachelors or Greater | 0.72% |
| Less Than 9th Grade | 0% |
| High School | 0% |
rate
Rate | Poverty |
|---|---|
| Female Employed | 1.37% |
| Male Employed | 0.81% |
| Male Unemployed | 0% |
| Female Unemployed | 0% |
Households
Families
MarriedFamilies
NonFamilies
Name | Median | Mean |
|---|---|---|
| Families | $155,000 | $184,640 |
| Households | $144,728 | $172,884 |
| Married Families | $165,855 | $-999,999,999 |
| Non Families | $86,050 | $130,828 |
mean
median
Married
Widowed
Divorced
Separated
NeverMarried
63.6%
Overall Marriage Rate
60.6%
Male Marriage Rate
67.2%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.
Married
Widowed
Divorced
Separated
NeverMarried
Second Gulf War
First Gulf War
Vietnam
Korea
World War II
380
Number of Veterans
380
Male Veterans
0
Female Veterans
War | Veterans |
|---|---|
| Vietnam | 108 |
| First Gulf War | 99 |
| World War II | 27 |
| Second Gulf War | 8 |
| Korea | 0 |
count
Age Group | Veterans |
|---|---|
| 35 to 54 | 128 |
| 65 to 74 | 107 |
| 75+ | 79 |
| 55 to 64 | 58 |
| 18 to 34 | 8 |
count
Name | Veterans | % of Total |
|---|---|---|
| White | 338 | 10.15% |
| 2+ Races | 27 | 8.39% |
| Hispanic | 27 | 8.77% |
| Other Race | 15 | 9.93% |
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
0%
Veteran Poverty Rate
37.63%
Veteran Disability Rate
LaborForceParticipation
74.6%
Labor Force Participation
73.8%
Employment Rate
1.1%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
42.69%
Born in Black Diamond
84.31%
Native Born
15.69%
Foreign Born
6.73%
Non Citizen
8.96%
Naturalized
84.31% of Black Diamond residents were born in the United States, with 42.69% having been born in Washington. 6.73% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
Year | Population | Growth | Change |
|---|---|---|---|
| 2029 | 10,114 | 586 | 6.15% |
| 2028 | 9,528 | 585 | 6.54% |
| 2027 | 8,943 | 585 | 7% |
| 2026 | 8,358 | 586 | 7.54% |
| 2025 | 7,772 | 585 | 8.14% |
| 2024 | 7,187 | 585 | 8.86% |
| 2023 | 6,602 | 276 | 4.36% |
| 2022 | 6,326 | 492 | 8.43% |
| 2021 | 5,834 | 988 | 20.39% |
| 2020 | 4,846 | 61 | 1.27% |
| 2019 | 4,785 | 341 | 7.67% |
| 2018 | 4,444 | -4 | -0.09% |
| 2017 | 4,448 | 18 | 0.41% |
| 2016 | 4,430 | 30 | 0.68% |
| 2015 | 4,400 | 47 | 1.08% |
| 2014 | 4,353 | 47 | 1.09% |
| 2013 | 4,306 | 39 | 0.91% |
| 2012 | 4,267 | 67 | 1.6% |
| 2011 | 4,200 | 50 | 1.2% |
| 2010 | 4,150 | 0 | 0% |
| 2000 | 3,970 | -6,144 | -60.75% |