The Otter Tail County Sheriff s Office provides law enforcement and crime prevention services. It serves Otter Tail County, Minn., which has population of more than 57,000 residents. The office intervenes in cases of domestic violence and provides the information and assistance to victims unfamiliar to the criminal justice system. Its investigators interview people, gather documents and evaluate the facts of a crime. Additionally, the office provides a range of services, such as sex offender information, animal control, traffic safety, recovery of stolen property, marine patrolling and firearms licensing. The Otter Tail County Sheriff s Office is located in Fergus Falls, Minn.