Home › States › Washington › Black Diamond
The median home value in Black Diamond, WA is $745,152, down 3.46% from a year earlier.
City housing-data period: September 2026. City source retrieval/check time (UTC) is recorded in the feed's updated field when available, not in the housing-data period.
Checked daily for new monthly Zillow releases, not new daily prices. Income and crime data are updated separately, not by the daily housing-data check. Unavailable means observation dates are missing or invalid.
Median Home Value
$745,152
Year-over-Year
-3.46%
Population
7,332
The typical home value decreased by 3.6%, from $773,347 in May 2026 to $745,152 in Sep 2026.
Monthly Zillow Home Value Index snapshots retained by HomePriceMap. A short history is shown now and grows automatically as each new monthly release arrives.
| Month | Typical home value | Year-over-year change |
|---|---|---|
| May 2026 | $773,347 | -2.2% |
| Jun 2026 | $770,693 | -2.4% |
| Jul 2026 | $764,109 | -2.6% |
| Aug 2026 | $750,277 | -3.0% |
| Sep 2026 | $745,152 | -3.5% |
Black Diamond ranks #24 of 118 Washington cities tracked here by median home value, and sits 29.2% above the state's city median of $576,860. It sits in King County, where the county-wide median is $824,870.
Median household income in Black Diamond is $141,383, so the typical home value is about 5.3× annual household income. This is a simple price-to-income benchmark rather than a monthly payment estimate; it does not account for mortgage rates, down payments, taxes or insurance.
Household income comes from the U.S. Census Bureau's ACS 5-Year Estimates, table B19013 (how the affordability measure works).
Black Diamond police recorded a violent crime rate of 27 per 100,000 residents in 2024 — lower than most cities that report to the FBI. Property crime runs at 396 per 100,000.
Reported by the city's own police department to the FBI's Uniform Crime Reporting Program (what this covers).
People often call this an average home price, but the figure shown here is Zillow's typical home value (ZHVI), not a simple arithmetic average. In Black Diamond, that value is $745,152. That's down 3.46% from a year earlier. It is about 29.2% above the typical Washington city tracked here.
Homes in Black Diamond are cheaper than King County as a whole, where the median is $824,870 — a difference of about 9.7%.
Median household income here is $141,383, so the typical home value is about 5.3× annual household income. This ratio is a broad comparison measure, not a mortgage-payment estimate.
Black Diamond police reported 27 violent crimes per 100,000 residents, covering a population of about 7,332. Crime rates are one input among many — they vary block to block within a city, and this figure is a citywide average.
Seattle · Gig Harbor · Shoreline · Maple Valley · Camas · Lynnwood · Renton · Edgewood