Laws are enforced by the Walpole Police Department. In 2005, no murders were committed in Walpole. Despite having no homicides, nonviolent crime in the town rose in 2005 compared to 2004. In 2005, there were 58 violent crimes per 100,000 people, a drop from 89 in 2004. There were 13 total violent crimes committed in Walpole in 2005. Eight of these were aggravated assault, one was a robbery, and four were forcible rapes. There were 1,216 non-violent crimes in Walpole per 100,000 people in 2005, which was a rise from 1,158 in 2004. There were 223 thefts, 27 burglaries, 23 motor vehicle thefts, and one arson.