Martinsville is a city located in Somerset County New Jersey. Martinsville has a 2020 population of 11,586. Martinsville is currently declining at a rate of 0.00% annually and its population has decreased by -3.29% since the most recent census, which recorded a population of 11,980 in 2010. Martinsville reached it's highest population of 12,128 in 2013.
The average household income in Martinsville is $202,940 with a poverty rate of 2.07%. The median rental costs in recent years comes to $1,657 per month, and the median house value is $559,800. The median age in Martinsville is 45.7 years, 45.4 years for males, and 45.9 years for females.