Jeannette is a city in Westmoreland County, Pennsylvania, United States. Jeannette was founded in 1888. The city got its name from one of the original city fathers, who wished to honor his wife, Jeannette McLaughlin, by giving the new town her first name: Jeannette. The city celebrated its 125th anniversary in July 2013. The population was 9,654 according to the 2010 census.
Jeannette is located at 40°19′44″N 79°36′50″W (40.328773, -79.613997).
According to the United States Census Bureau, the city has a total area of 2.4 square miles (6.2 km2).
As of the census of 2010, there were 9,654 people, 4,630 households, and 2,949 families residing in the city. The population density was 4,414.3 people per square mile (1,706.9/km2). There were 5,139 housing units at an average density of 2,129.3 per square mile (823.3/km2). The racial makeup of the city was 77.81% white, 20.19% African American, 0.08% Native American, 0.09% Asian, 0.04% Pacific Islander, 0.20% from other races, and 1.60% from two or more races.