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Black Diamond
City in Washington, United States
Overview
Black Diamond, Washington is a scenic small city known for its storied coal mining heritage, tranquil lakes, and close-knit community. Bursting with natural beauty, it offers a blend of historic charm and modern suburban comforts within easy reach of Seattle's metro area.
Geographic Context
Jurisdiction
United States
State
Washington
Population
4,697
Time Zone
America/Los_Angeles
Coordinates
47.31°, -122.00°
Key Metrics
Safety Score
80
Female Safety
75
LGBTQ+ Safety
70
Traffic Safety
80
Food Safety
95
Monthly Cost
$3,190
Local Cost
$2,170
Local Income
$4,100
Cashless
85
English
98
Temperature
8.5°C
Summer Avg
15.8°C
Winter Avg
1.5°C
Record High
37.8°C
Record Low
-19.7°C
Humidity
84%
Precipitation
1736 mm
Internet Speed
318 Mbps
Upload
87 Mbps
Latency
12 ms
City Vibrancy
14
Coworking
0
Cafes
4
Nightlife
1
Parks
9
Transport
1
Walk Score
1
Footways
1.0
Airport
RNT
Distance
26 km
Explore
Frequently Asked Questions
Data sources
Source-backed data
NASA POWER - Climate normals and monthly weather measurements rendered as city weather metrics. Updated 2026-03-22.
World Air Quality Index - Latest available city-level air quality station measurement. Updated 2025-12-05.
Ookla Open Data - Internet speed aggregates for 2024Q3 from 4 tests. Updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Updated 2025-12-07.
OpenStreetMap transport extract - Walkability, footway density, and airport access metrics derived from mapped transport features. Updated 2025-12-06.
Oyster List city price model - City price estimates calibrated from local price surveys and jurisdiction-level cost signals. Updated 2026-01-14.
Estimated data
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores are model-assisted estimates derived from source-backed country and city signals. Confidence 75/100.
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