​Holiday Closing: all county offices are closed Monday, May 30, for the Memorial Day holiday, and will re-open Tuesday, May 31. This includes parks offices, public works, courts and all other administrative offices.

Sammy Knapp, Constable - Precinct 3

Constable Sammy Knapp

Constable, Precinct 3
Collin County Sub-Courthouse
920 E. Park. Blvd.
Suite 230
Plano, TX 75074
972-881-3070 (Plano)
972-424-1460 ext. 3070 (Metro)

  • Basic Law Enforcement training: Dallas County Sheriff Department
  • Patrol/Motor Officer: Grand Prairie Police Department
  • Air Piracy: Department of Public Safety, DFW Regional Airport
  • Sales Manager: Service Corporation International
  • Patrol/Senior Traffic Officer/Motor Officer/Negotiator: Plano Police Department
  • Security Coordinator/mega church: Prestonwood Baptist Church, Plano
  • Deputy Constable:  Collin County Pct. 3
  • Constable: Collin County Pct. 3
  • Member of Prestonwood Baptist Church
  • Texas Municipal Police Association
  • Texas Justice of Peace and Constable’s Association
  • Justice of Peace and Constable’s Association
  • Texas Police Association
  • Texas Association of Hostage Negotiators
  • Plano Masonic Lodge
  • Scottish Rite of Freemasonry, Dallas, Texas
  • Hella Shrine, Garland, Texas
  • Bryan Adams High School, Dallas, Texas
  • Bishop College, Dallas, Texas
  • Collin College, Plano, Texas
  • Master Police Officer Certificate