Court directory

# King County - Municipal Courts - Black Diamond

## Court information

### Black Diamond Municipal Court

Physical address

25510 Lawson St, Black Diamond, WA 98010-9721

Phone

(360) 851-4490

[Official court website](https://www.courts.wa.gov/court_dir/courtdirectory.pdf) Checked Aug 15, 2026 [Official court website](https://www.blackdiamondwa.gov/municipal-court) Checked Aug 15, 2026

Aliases: WA King County - Municipal Courts - Black Diamond · Washington King County - Municipal Courts - Black Diamond

## Assigned Judges

- [Krista White Swain Judge](/kyj/judge/krista-white-swain-judge-king-county-municipal-courts-black-diamond-3003-wa)