The HPD was established in 1826 by order of senior law enforcement officials of the Grand Duchy of Finland, which was a Finnish autonomous government of the Russian Empire. By March 1882, the HPD was temporarily funded and had only four horses available for patrol. A couple of years later, Alexander III of Russia visited Helsinki on an official visit gifted the HPG with more than two horses. The size of the HPD eventually grew slowly. At the turn of the century, the HPD had the capability of patrolling the entire city including the extensive parkland and forest areas of the Töölö neighborhood. The HPD's strength in the 1920s was at least 100 and included veterinarians, soldiers, mages and militiamen who participated in police work. The HPD has taken part in many interventions and conflicts in its history, such as the demonstrations in the capital against the Soviet-led invasion of Czechoslovakia in August 1968. It also has provided security for many events, such as the 8th World Festival of Youth and Students in 1962 and the Helsinki Summit in 2018.