Mountainside is a borough in Union County, New Jersey, United States. As of the 2010 United States Census, the borough’s population was 6,685, reflecting an increase of 83 (+1.3%) from the 6,602 counted in the 2000 Census, which had in turn declined by 55 (-0.8%) from the 6,657 counted in the 1990 Census.
Mountainside was incorporated as a borough on September 25, 1895, from portions of Westfield Township, based on the results of a referendum held the previous day.
The borough is bordered to the north by Summit, to the east by Springfield Township, to the south by Westfield, and to the west by Berkeley Heights and Scotch Plains.
As of the 2010 United States Census, there were 6,685 people, 2,468 households, and 1,866 families residing in the borough. The population density was 1,668.0 per square mile (644.0/km2). There were 2,558 housing units at an average density of 638.3 per square mile (246.4/km2). The racial makeup of the borough was 91.31% (6,104) White, 1.97% (132) Black or African American, 0.00% (0) Native American, 4.94% (330) Asian, 0.00% (0) Pacific Islander, 0.42% (28) from other races, and 1.36% (91) from two or more races. Hispanic or Latino of any race were 6.09% (407) of the population.
Source: Wikipedia
