Cost of Living in Black Diamond, WA
Population 5,678 · Washington · Data vintage 2023
(100 = US avg)
Black Diamond's housing market reflects its status as a high-earning metro: $776,000 for a typical home, 155% above the US median, paired with household incomes around $144,728 that put it in the upper third of the state. The labor market has been unusually tight, with unemployment around 1.1% — below most comparable cities in the state.
Geographically, Black Diamond sits roughly 10 miles east of Kent. Median home values run roughly 44% higher than Kent's $538,000.
Cost Overview
Scale: 100 = US national average. Green < 90, Red > 110.
About the Cost of Living in Black Diamond
The median home value in Black Diamond is $776,400 — 155% above the national median of $305,000. Median rent runs $2,340/month, 78% higher than the national median of $1,314/month. The median household income of $144,728/year is 94% higher than the US median of $74,580. The local unemployment rate is 1.1%, below the national average of 4.8%. Washington charges no state income tax, a meaningful advantage for take-home pay. The climate averages highs of 61.4°F and lows of 45.9°F. Overall, Black Diamond has a cost of living index of 224 versus the US average of 100, meaning it is 124% more expensive.
Black Diamond has limited residential data
Detailed housing and income data is limited for this location. Here are the nearest cities with full cost of living data:
🏠 Housing
HUD Fair Market Rents by Bedroom
💰 Estimated Monthly Budget
Estimates based on median data and national averages. Actual costs vary.
🛒 Food & Groceries
National BLS average prices (2023). Local prices may vary.
🚗 Transportation
Commute Mode
⚡ Utilities
📋 Taxes
💼 Income & Employment
🎓 Education
👥 Demographics
🌤 Climate
NOAA 1991–2020 Climate Normals
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 48 | 50 | 55 | 60 | 66 | 71 | 77 | 78 | 72 | 61 | 52 | 47 |
| Low °F | 37 | 37 | 40 | 43 | 49 | 54 | 58 | 57 | 53 | 46 | 40 | 37 |
| Precip" | 4.93 | 3.21 | 3.74 | 2.83 | 1.86 | 1.47 | 0.60 | 0.89 | 1.53 | 3.49 | 5.61 | 4.53 |
💨 Air Quality
EPA AQS 2023 — county-level monitoring data
Frequently Asked Questions
What is the cost of living in Black Diamond, WA?
Black Diamond has a cost index of 224 (100 = national average). It is 124% above the national average.
What is average rent in Black Diamond, WA?
The median gross rent in Black Diamond is $2,340 per month based on 2023 Census data.
What is the average home price in Black Diamond?
The median home value in Black Diamond is $776,400 according to Zillow and Census data.
What is the median income in Black Diamond?
The median household income in Black Diamond is $144,728 per year (2023 ACS 5-year estimates).
What is the sales tax in Black Diamond, WA?
The combined state and local sales tax rate in Black Diamond is 9.2%. Washington has no state income tax.
Is Black Diamond, WA affordable?
Black Diamond is above average in cost of living, with an index of 224 — about 124% higher than the national average.
What is the weather like in Black Diamond?
Black Diamond has average high temperatures of 61.4°F and average lows of 45.9°F. Annual precipitation is 34.7". Data from NOAA 1991–2020 Climate Normals.
Black Diamond at a Glance
- Population
- 5,678
- Median Income
- $144,728
- Home Value
- $776,400
- Median Rent
- $2,340/mo
- Unemployment
- 1.1%
- Avg High Temp
- 61.4°F
- Sales Tax
- 9.2%
Nearby Cities
Explore county-level cost of living data
Washington Rankings
Similar Cost Cities
Cities in other states with comparable housing costs