Mount Holly is a township in Burlington County, New Jersey, United States. It is the county seat of Burlington County as well as an eastern suburb of Philadelphia. As of the 2010 United States Census, the township’s population was 9,536, reflecting a decline of 1,192 (-11.1%) from the 10,728 counted in the 2000 Census, which had in turn increased by 89 (+0.8%) from the 10,639 counted in the 1990 Census. Mount Holly also gives its name to the National Weather Service’s Weather Forecast Office for the Philadelphia metropolitan area, though the office is actually located in adjacent Westampton.
Mount Holly had a total area of 2.852 square miles (7.389 km), including 2.806 square miles (7.269 km) of land and 0.046 square miles (0.120 km) of water (1.63%).
The township borders the Burlington County municipalities of Eastampton Township, Hainesport Township, Lumberton Township, and Westampton Township.
Clermont is an unincorporated community located within Mount Holly Township.
As of the 2010 United States Census, there were 9,536 people, 3,456 households, and 2,263.680 families residing in the township. The population density was 3,397.9 per square mile (1,311.9/km). There were 3,861 housing units at an average density of 1,375.8 per square mile (531.2/km). The racial makeup of the township was 65.57% (6,253) White, 23.10% (2,203) Black or African American, 0.37% (35) Native American, 1.47% (140) Asian, 0.07% (7) Pacific Islander, 4.29% (409) from other races, and 5.13% (489) from two or more races. Hispanic or Latino of any race were 12.69% (1,210) of the population.
There were 3,456 households out of which 28.7% had children under the age of 18 living with them, 42.6% were married couples living together, 16.9% had a female householder with no husband present, and 34.5% were non-families. 27.4% of all households were made up of individuals, and 8.6% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.19.
In the township, the population was spread out with 23.5% under the age of 18, 9.6% from 18 to 24, 28.7% from 25 to 44, 27.1% from 45 to 64, and 11.1% who were 65 years of age or older. The median age was 36.3 years. For every 100 females there were 102.8 males. For every 100 females ages 18 and older there were 100.1 males.
The Census Bureau’s 2006-2010 American Community Survey showed that (in 2010 inflation-adjusted dollars) median household income was $53,841 (with a margin of error of +/- $4,427) and the median family income was $68,500 (+/- $4,684). Males had a median income of $51,945 (+/- $5,141) versus $37,079 (+/- $5,759) for females. The per capita income for the borough was $24,551 (+/- $1,785). About 7.1% of families and 12.2% of the population were below the poverty line, including 21.4% of those under age 18 and 8.8% of those age 65 or over.
As of the 2000 United States Census there were 10,728 people, 3,903 households, and 2,583 families residing in the township. The population density was 3,750.8 people per square mile (1,448.3/km²). There were 4,248 housing units at an average density of 1,485.2 per square mile (573.5/km²). The racial makeup of the township was 68.68% White, 21.57% African American, 0.42% Native American, 1.37% Asian, 0.07% Pacific Islander, 4.77% from other races, and 3.12% from two or more races. Hispanic or Latino of any race were 8.78% of the population.
There were 3,903 households out of which 32.0% had children under the age of 18 living with them, 44.0% were married couples living together, 17.3% had a female householder with no husband present, and 33.8% were non-families. 27.2% of all households were made up of individuals and 10.0% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.20.
In the township the age distribution of the population shows 26.3% under the age of 18, 9.4% from 18 to 24, 32.2% from 25 to 44, 19.6% from 45 to 64, and 12.4% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 99.7 males. For every 100 females age 18 and over, there were 96.6 males.
The median income for a household in the township was $43,284, and the median income for a family was $52,000. Males had a median income of $38,186 versus $27,425 for females. The per capita income for the township was $19,672. About 6.8% of families and 9.9% of the population were below the poverty line, including 11.4% of those under age 18 and 10.4% of those age 65 or over.