History
The Smithfield City Police Department has been in operation since 2001. However, before that Smithfield has had a long legacy of men serving in law enforcement. In 1868, Thomas G. Winn was elected as the first marshal of Smithfield. From then until 1971 Smithfield law enforcement was handled by a marshal and a night watchman. The following are the most complete lists of the men who have served as the Smithfield Marshal and as the Night Watchmen that is available.

| Marshalls |
Night Watchmen |
| Larry Anderson |
Henry Barnes |
| Oliver Anderson |
Merl Ewing |
| Ted Dowd |
Reed Law |
| Earl M. Ewing |
Mark McCann |
| Ray Facer |
Ed Pitcher |
| Frank Federico |
Jim Reed |
| Harry Griffiths |
J. H. Richardson |
| Jack (John) Hadfield |
Verner Scrowther |
| John R. Hillyard |
Done Thornley |
| Jack Howard |
James Tuveson |
| Farrell Karren |
Alf Wickham |
| Reed Law |
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| Dan Littledyke |
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| L. O. (Oz) Low |
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| James J. Meikle |
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| James Merrill |
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| Richard Mechaelis |
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| Edwin R. Miles Sr. |
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| Harry Munns |
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| Joseph Nelson |
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| Samuel Nelson |
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| C. Emil Peterson |
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| Marvin Priestley |
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| William Reed |
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| Jim Reese |
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| Rich Richardson |
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| Verner Scrowther |
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| Jonathan Heber Smith |
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| Jack Stowell |
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| Alberto John Thornley |
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| R. B. Thornley |
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| Thomas G. Winn |
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| William L. Winn |
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| LaMoine Wiser |
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From 1971 until January 2001, Smithfield contracted with the Cache County Sheriff’s Department for its law enforcement needs. In 2000, the city council reevaluated the city’s needs and decided that the growing population of Smithfield necessitated a police department. On August, 15, 2000, Johnny W. McCoy was hired as Chief of Police and he immediately began to lay the ground work for the formation of the Smithfield City Police Department. He hired five police officers and on January 1, 2001 the Smithfield City police officers efficiently traded posts with the Cache County Sheriffs Department. Since that time the police department has continued to grow to fulfill the needs of the citizens of Smithfield.
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