Harford County Sheriff's Office

The Harford County Sheriff's Office (HCSO) is the largest sheriff's office in Maryland[1][2] and is the primary law enforcement agency servicing a population of 241,402 people within 440.35 square miles (1,140.5 km2) within Harford County, Maryland.

Thomas Miller was appointed the first sheriff by the Lord Proprietor of the Province, Henry Harford (the county's namesake).

[5] In 2022, Harford County deputies fatally shot a suicidal man: under state law, police killings must be investigated by the state attorney general's office.

The HCSO also has a myriad of special operations such as K-9, SWAT, and Accident Investigation among others.

[8] In 2013, the sheriff's office opened an aviation unit with the granting of a Bell OH-58 helicopter.