Roll of Honor
Incident
Patrolman John DeMarco suffered a fatal heart attack when he was confronted by an irate citizen who had received a parking ticket at the City Market on Pine Avenue.
He was transported to St. Mary's Hospital where he was pronounced dead.
Patrolman DeMarco had served with the Niagara Falls Police Department for 35 years.
Survivors
He was survived by his wife and son.
In Our Keeping
- Permanent identifier
BO-US-NY-EB692B23- 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.
Are you family? This record can be claimed and maintained by those who knew John. Claim this record.
This page is permanent and free. No fee to view it, no advertising, no tracking, and no account required. It will not be taken down.
Tributes
35 years. You could have gone home.
Patrolman DeMarco gave the Niagara Falls Police Department 35 years. Still answering calls at the end.
Thank you for your service to the Niagara Falls community. Gone but never to be forgotten.
Rest easy, Patrolman DeMarco.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Patrolman John DeMarco is one of 1,306 officers lost to cardiac events in the line of duty across the full record of this memorial — 4% of all 32,508 officers honored here.
In NY, 99 of 2,147 officers were lost to cardiac events in the line of duty — 4.6% of this state's fallen. That is 0.6 percentage points above the national rate of 4%.
At Niagara Falls Police Department, 1 of 7 officers on record were lost to cardiac events in the line of duty — 14.3% of this agency's fallen.
National Cause Distribution
How Cardiac compares to all causes of officer death in the memorial record. John DeMarco's cause is highlighted.
How John DeMarco Compares
When Cardiac Deaths Occur
Monthly distribution of Cardiac deaths across the full memorial record. John DeMarco is highlighted in Apr.
Incident Location
Others Who Wore This Badge
6 officers from Niagara Falls Police Department are honored on badge.nw.
