Grinnell Police Department

Chief Dennis Reilly
Address 1020 Spring St.
Grinnell IA 06776
Phone 641-236-2670


The residential population of Grinnell is 9,218 people, including approximately 1,600 students who attend Grinnell College. The City of Grinnell is located in Central Iowa adjacent to U.S. Interstate 80 and approximately 45 miles East of Des Moines, Iowa. For additional information on the city of Grinnell, please visit the Grinnell Chamber Area website

Our department is currently comprised of 14 sworn officers, two reserve officers and two civilian staff, who provide a vast array of services and programs to the Grinnell community. Our officers are well-trained and experienced in protecting citizens and property, preventing crime, enforcing laws, and maintaining order. 


The Grinnell Police Department employs 14 sworn officers and includes the following career specialty areas: 

  • Bike Patrol
  • Career Education and advancement
  • Criminal & Narcotics Investigations
  • Crime Prevention

Other facts of employment with the Grinnell Police Department: 

  • Bargaining unit represented by labor union
  • Lateral entry program for certified officers (please inquire)
  • Professional Career Development through career counseling


More Information

If you are interested in a interesting and exciting career in law enforcement please contact the Grinnell Police Department by calling (641) 236-2670.

About Chief Reilly

Chief Dennis Reilly began his law enforcement career with the Morris Township (N.J.) Police Department in 1987. During his career in Morris Township he was promoted to the rank of Sergeant in 1995, Lieutenant in 2000, and Captain in 2007. In January, 2011, he was appointed Chief of Police for Morris Township, where he remained until hisappointment as Chief of Police for Grinnell on June 4, 2012. During his career, Chief Reilly has instructed in a number of law enforcement areas, including constitutional law, firearms, first aid, and RADAR operation. He has also served as a Field Training Officer and Officer in Charge of Detectives.

Chief Reilly holds a B.A. in Management Sciences from St. Bonaventure University and an M.A. in Education from Seton Hall University. He is a graduate of the 241st Session of the F.B.I. National Academy, as well as a graduate from and instructor for the New Jersey State Association of Chiefs of Police Command and Leadership Academy. 

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