Sheriff Dan T. Mack has been with the Hamlin County Sheriff's Office since 1976. He was a deputy sheriff with the department from 1976 until 1979 before he ran for Sheriff. He was elected into office the fall of 1979 and has held the position to this day. Sheriff Mack is a member of the South Dakota Sheriff's Association and was president during the year of 1986.  Sheriff Mack is also certified in HazMat Printing, does employment fingerprinting, civil fingerprinting, investigate crimes, investigate accidents, does office budget, assists in the 24-7 program, works on execution of judgment and other law enforcement duties.   During his time off, Sheriff Mack likes to spend time fishing, camping, boating and being with friends and family. 

Sheriff Mack and his wife, Louise, ran the sheriff’s office by themselves for many years.  Now, the Hamlin County Sheriff’s Office has three full-time deputies with the help of four communities contract services. Louise had worked for the Hamlin County Sheriff's Office for over 30 years as the department's secretary and record keeper. 

Deputy Steffensen has been with the sheriff's office since summer of 2003. He worked at the Estelline Police Department before becoming a full-time deputy sheriff with the Hamlin County Sheriff's Office.  Deputy Steffensen works on civil / criminal paper services, traffic enforcement, security for the courts, does criminal / traffic investigations and assists in the 24-7 program.  During his off time, Deputy Steffensen likes to fish, hunt, camp and spend time with the family.