Somerville is a city located in Somerset County New Jersey. With a 2020 population of 11,867, it is the 81st largest city in New Jersey and the 2747th largest city in the United States . Somerville is currently declining at a rate of -0.82% annually and its population has decreased by -1.91% since the most recent census, which recorded a population of 12,098 in 2010. Somerville reached it's highest population of 13,652 in 1970. Spanning over 2 miles, Somerville has a population density of 5,076 people per square mile.
The average household income in Somerville is $94,637 with a poverty rate of 6.72%. The median rental costs in recent years comes to $1,388 per month, and the median house value is $322,000. The median age in Somerville is 35 years, 34.4 years for males, and 35.2 years for females.