James A. Mercer
Agency patch
County Ranger

James A. Mercer

Felonious
End of Watch December 11, 1914
Age 42
Tour of Duty 3 yrs
The Vigil Panel 29 ›
Gender Male

Incident

County Ranger James Mercer succumbed to gunshot wounds sustained nine days earlier when he was shot while trying to arrest a suspected cattle rustler near Pantano, Arizona. Ranger Mercer was taken to Rodgers Hospital where he remained until succumbing to his wounds. The subject fled to Mexico and it is unknown if he was ever arrested. Ranger Mercer had served as a cattle inspector and county ranger for three years.

Survivors

He was survived by his wife, two brothers, and two sisters.

In Our Keeping

Permanent identifier
BO-US-AZ-6822F061
Stewardship
Maintained by NeuraWeb Global Inc.
Added to badge.nw
August 2, 2026
Last updated
August 2, 2026

Honored here by 1 tribute.

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Tributes

I never knew you. I am standing here anyway.
County Ranger Mercer gave the Pima County Sheriff's Department 3 years.
Thank you for your service to the Tucson community. Gone but never to be forgotten.
Rest easy, County Ranger Mercer.

— S. Vincent Anthony, U.S. Army 1985-1993

Agency

Type Sheriff's Office
Location Tucson, Pima County, AZ
Platform Identity pcso.pima.az.us.gov.nw

Service Record

End of Watch December 11, 1914
Tour of Duty 3 yrs
Age 42
Gender Male

Incident Details

Cause Felonious
Weapon Gun

County Ranger James A. Mercer is one of 1 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 0% of all 97,772 officers honored here.

In AZ, 204 of 330 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 61.8% of this state's fallen. That is 61.8 percentage points above the national rate of 0%.

At Pima County Sheriff's Department, 4 of 11 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 36.4% of this agency's fallen.

Pima County Sheriff's Department
4
of 11 officers
36.4% Felonious
AZ — Statewide
204
of 330 officers
61.8% Felonious
Nationwide
1
of 97,772 officers
0% Felonious

National Cause Distribution

How Felonious compares to all causes of officer death in the memorial record. James A. Mercer's cause is highlighted.

Felonious
1 (0%)
Accident
1 (0%)
Illness
1 (0%)
Cardiac
1 (0%)
Undetermined
1 (0%)
Suicide
1 (0%)

How James A. Mercer Compares

Age at Death
42
This officer
Avg for Felonious: 39.0 years
Years of Service
3
This officer
Avg for Felonious: 8.4 years

When Felonious Deaths Occur

Monthly distribution of Felonious deaths across the full memorial record. James A. Mercer is highlighted in Dec.

Jan
1,392
Feb
1,295
Mar
1,373
Apr
1,516
May
1,504
Jun
1,442
Jul
1,587
Aug
1,517
Sep
1,491
Oct
1,371
Nov
1,447
Dec
1,624

Weapons Used Against Officers

Most common weapons in felonious officer deaths. James A. Mercer was killed by gun.

Handgun
3,684
Gun
3,592
Gun; Unknown type
1,492
Shotgun
1,109
Rifle
935
Officer's handgun
909

Incident Location