Grand Rapids saw a drop in serious crime between 2014 and 2015.
The department's annual report says violent crimes dropped 9.5%.
David Rahinsky is the Grand Rapids police chief.
He says this drop in crime is a result of the department having built trust and rapport with the community.
"I think we recognize that the issues that confront us now are not issues that we're going to arrest our way out of," Rahinsky says. "They are issues of relationships, they're issues of trust."
"We recognize that the way policing needs to be done is by building relationships based on trust, in the neighborhoods," Rahinsky says.
He says the community's engagement played a large role in the drop in crime.