Roll of Honor
Incident
Deputy Sheriff Mark Brown died two days after being involved in a motorcycle crash while responding to a false robbery alarm at a bank.
He was responding with lights and sirens when a car pulled out in front of him on 15th Avenue Northeast near Northeast 177th Street in Shoreline. Deputy Brown was unable to stop in time and collided with the back of the vehicle. He suffered head and internal injuries and was put on life support for two days until succumbing to his injuries.
Deputy Brown had served with the King County Sheriff's Office for ten years. His brother also served in law enforcement and was a detective with the agency.
Survivors
He is survived by his wife and two children.
In Our Keeping
- Permanent identifier
BO-US-WA-CC4C7BEB- Stewardship
- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- April 2, 2026
- Last updated
- July 23, 2026
Honored here by 1 sentinel - 1 tribute.
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Tributes
I never knew you. I am standing here anyway.
Deputy Sheriff Brown gave the King County Sheriff's Office 10 years.
Thank you for your service to the Seattle community. Gone but never to be forgotten.
Rest easy, Deputy Sheriff Brown.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Deputy Sheriff Mark William Brown is one of 10,088 officers lost to accidents in the line of duty across the full record of this memorial — 31% of all 32,508 officers honored here.
In WA, 111 of 339 officers were lost to accidents in the line of duty — 32.7% of this state's fallen. That is 1.7 percentage points above the national rate of 31%.
At King County Sheriffs Dept., 5 of 18 officers on record were lost to accidents in the line of duty — 27.8% of this agency's fallen.
National Cause Distribution
How Accident compares to all causes of officer death in the memorial record. Mark William Brown's cause is highlighted.
How Mark William Brown Compares
When Accident Deaths Occur
Monthly distribution of Accident deaths across the full memorial record. Mark William Brown is highlighted in Feb.
Incident Location
Others Who Wore This Badge
17 officers from King County Sheriffs Dept. are honored on badge.nw. Showing the 16 most recent.
