Black Diamond, Washington
Black Diamond is a city of 5,961 people in King County, Washington.
Why visit Black Diamond
Townapedia lists 7 museums and landmarks, 23 parks and trails, 20 places to eat and 1 place to stay in and around town.
Highlights include Black Diamond Cemetery, Luigi and Aurora Pagani House and Flaming Geyser State Park.
August is the warmest month, with average highs of 77°F; December lows average 32°F.
Weather in Black Diamond
Forecast from the National Weather Service. Full forecast
About Black Diamond
Black Diamond is a city in King County, Washington, United States. The population was 4,697 as of the 2020 census,, and was estimated at 6,978 in 2025. In 2025, with a 48.6% growth rate, Black Diamond was the fastest growing small city in King County.
From the Wikipedia article Black Diamond, Washington (this version), under CC BY-SA 4.0.
Museums and landmarks7
Black Diamond Cemetery
Monument and historic site · National Register of Historic Places
Historic place in King County, Washington, US
Luigi and Aurora Pagani House
Monument and historic site · National Register of Historic Places · 0.6 mi
Historic home in King County, WA
Black Diamond Historical Museum
Museum · 0.5 mi
32627 Railroad Avenue, Black Diamond
Th 09:00-15:00; Sa-Su 12:00-15:00
Parks, trails and playgrounds23
Lake Sawyer Regional Park
Park · 2.1 mi
Park with benches, swimming area, and Boat Launch.
11 more on the map.
Restaurants and cafes20
Creative Coffee Brewing
Cafe · Coffee Shop · 0.7 mi
Mo-Th 06:00-17:00; Fr 06:00-18:00; Sa 07:00-18:00; Su 07:00-16:00
Farmhouse Brew
Cafe · Coffee Shop · 1.1 mi
30741 3rd Avenue, Black Diamond
Mo-Fr 05:00-14:00; Sa-Su 06:00-14:00
Italian Fresh Pizza Co.
Restaurant · Pizza · 0.7 mi
32621 3rd Avenue, Black Diamond
Black Diamond Grill Restaurant
Restaurant · 0.6 mi
32700 Railroad Avenue, Black Diamond
8 more on the map.
Where to stay1
Churches and places of worship7
Chapel Wood Baptist Church
Church · Baptist · 1.0 mi
30410 3rd Avenue, Black Diamond
St Barbara Catholic Chapel
Church · Roman Catholic · 0.8 mi
32416 6th Avenue, Black Diamond
Shopping5
Gas and EV charging1
Schools, colleges and libraries17
Cedar Valley Elementary School
School · 4.8 mi
26500 Timberlane Way Se, Covington
Map of Black Diamond
81 places. The map loads OpenStreetMap tiles when you open it.
Climate by month
Monthly table
| Month | High | Low | Rain |
|---|---|---|---|
| Jan | 46°F | 33°F | 8.0 in |
| Feb | 49°F | 33°F | 5.4 in |
| Mar | 53°F | 35°F | 6.2 in |
| Apr | 59°F | 38°F | 5.5 in |
| May | 66°F | 44°F | 3.9 in |
| Jun | 70°F | 48°F | 3.1 in |
| Jul | 77°F | 51°F | 1.3 in |
| Aug | 77°F | 52°F | 1.6 in |
| Sep | 71°F | 47°F | 2.8 in |
| Oct | 60°F | 41°F | 5.8 in |
| Nov | 50°F | 36°F | 8.5 in |
| Dec | 44°F | 32°F | 7.5 in |
U.S. Climate Normals 1991-2020 for Landsburg (5 mi away), NOAA NCEI.
People and cost of living
American Community Survey 5-year estimates, 2020-2024, U.S. Census Bureau. Estimates have margins of error, larger for small towns.
Disaster history
King County has had 18 federal disaster declarations since 2000, most often for severe storms.
- 2026-04-07: Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (Flood)
- 2025-12-12: Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (Flood)
- 2024-04-28: Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (Severe Storm)
- 2022-09-10: Bolt Creek Fire (Fire)
- 2020-04-23: Severe Storms, Flooding, Landslides, And Mudslides (Flood)
- 2020-03-22: Covid-19 Pandemic (Biological)
OpenFEMA disaster declarations summaries.
Getting there and nearby towns
Renton Municipal Airport (RNT) is the nearest airport with scheduled flights listed in OpenStreetMap, 16 miles away.
- Maple Valley 4 mi north, about 6 min by car
- Lake Morton-Berrydale 4 mi west, about 7 min by car
- Covington 5 mi northwest, about 9 min by car
- Lake Holm 5 mi west, about 9 min by car
- Shadow Lake 7 mi northwest, about 11 min by car
- Enumclaw 8 mi south, about 12 min by car
- Auburn 9 mi west, about 15 min by car
- Lake Tapps 10 mi southwest, about 15 min by car
- Bonney Lake 10 mi southwest, about 17 min by car
- Kent 11 mi northwest, about 17 min by car
Drive times are estimates from straight-line distance, not routes.
Local news
Headlines from INDB, the NEMICO news database.
Reviews, tips and questions
Loading what members have shared...
Sources and licences
- NCES EDGE (Public domain): public schools
- NOAA NCEI U.S. Climate Normals 1991-2020 (Public domain): climate by month
- OpenFEMA (Public domain): disaster declarations
- OpenStreetMap contributors (ODbL 1.0): places, airports, map data
- U.S. Census Bureau (Public domain): population, income, housing, education, commute
- Wikidata (CC0 1.0): elevation, founding date, time zone, website, landmarks and historic places
- Wikimedia Commons (see each image): photos
- Wikipedia (CC BY-SA 4.0): overview and history text
Photo credits
- Black Diamond Bakery - coffee house, Joe Mabel, CC BY-SA 3.0
- Trail Running Snow - Black Diamond, WA, NateJ.Wiki, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113404, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113342, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113352, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113215, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113301, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113147, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113020, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113028, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113004, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113114, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113119, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 113045, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112940, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112933, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112915, Steven Pavlov, CC BY-SA 4.0
- Black Diamond, United States Apr 12, 2021 08-00-54 PM, Senapa, CC BY-SA 4.0
- Black Diamond, United States Apr 12, 2021 08-01-04 PM, Senapa, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112857, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112816, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112834, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112830, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112729, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112758, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112642, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112630, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112607, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112613, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112500, Steven Pavlov, CC BY-SA 4.0
- 2024-12-11, Black Diamond Historical Museum, 112509, Steven Pavlov, CC BY-SA 4.0
- Black Diamond, United States Apr 12, 2021 08-02-50 PM, Senapa, CC BY-SA 4.0
- Black Diamond, United States Apr 12, 2021 08-05-06 PM, Senapa, CC BY-SA 4.0
- Black Diamond, United States Apr 12, 2021 08-05-37 PM, Senapa, CC BY-SA 4.0
- Black Diamond, WA - Luigi & Aurora Pagani House 01, Joe Mabel, CC BY-SA 3.0
- Black Diamond Cemetery 03, Joe Mabel, CC BY-SA 3.0
- Unidentified vehicle, IMG 7682, Steven Pavlov, CC BY-SA 4.0
- 2022-08-31, Jones Lake of King County, Washington, 03, Steven Pavlov, CC BY-SA 4.0
- 2022-08-31, Jones Lake of King County, Washington, 02, Steven Pavlov, CC BY-SA 4.0
Page built October 30, 2026. Spotted a mistake? Tell us or suggest a place.