In 2005, there were 31 homicides in Trenton, which at that time was the largest number in a single year in the city's history. The city was named the 4th "Most Dangerous" in 2005 out of 129 cities with a population of 75,000 to 99,999 ranked nationwide in the 12th annual Morgan Quitno survey. In the 2006 survey, Trenton was ranked as the 14th most dangerous city overall out of 371 cities included nationwide in the Morgan Quitno survey, and was again named as the fourth most dangerous municipality of 126 cities in the 75,000–99,999 population range. Homicides went down in 2006 to 20, but back up to 25 in 2007. In 2018 the city had 21 murders, the same as in 2017, when the city accounted for 21 of the 25 homicides in all of Mercer County.