According to the United States Census Bureau, the township has a total area of 21.6 square miles, all of it land. It consists mainly of rolling hills and valleys and is drained by the Schuylkill River mostly via the Perkiomen Creek. Its villages include Fagleysville, Frederick Hoffmansville, Layfield, New Hanover, New Hanover Square, and Sassamansville Its numbered routes are 73 east-to-west and 663 north-to-south, which join briefly in Layfield. New Hanover has a hot-summer humid continental climate and is in hardiness zones 6b and 7a. The average monthly temperatures in Layfield range from 30.6° F in January to 75.3° F in July. The average annual absolute minimum temperature in Layfield is 0.6° F.
Adjacent municipalities
Upper Hanover Township
Upper Frederick Township
Limerick Township
Lower Pottsgrove Township
Upper Pottsgrove Township
Douglass Township
Demographics
As of the 2010 census, the township was 95.3% White, 1.2% Black or African American, 0.1% Native American, 2.0% Asian, and 1.2% were two or more races. 1.6% of the population were of Hispanic or Latino ancestry. As of the census of 2000, there were 7,369 people, 2,532 households, and 2,147 families residing in the township. The population density was 341.3 people per square mile. There were 2,615 housing units at an average density of 121.1/sq mi. The racial makeup of the township was 98.32% White, 0.31% African American, 0.07% Native American, 0.79% Asian, 0.01% Pacific Islander, 0.05% from other races, and 0.45% from two or more races. Hispanic or Latino of any race were 0.76% of the population. There were 2,532 households, out of which 40.1% had children under the age of 18 living with them, 76.5% were married couplesliving together, 5.4% had a female householder with no husband present, and 15.2% were non-families. 12.2% of all households were made up of individuals, and 5.1% had someone living alone who was 65 years of age or older. The average household size was 2.91 and the average family size was 3.17. In the township the population was spread out, with 27.5% under the age of 18, 5.3% from 18 to 24, 31.5% from 25 to 44, 24.9% from 45 to 64, and 10.8% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 100.2 males. For every 100 females age 18 and over, there were 97.7 males. The median income for a household in the township was $67,097, and the median income for a family was $70,789. Males had a median income of $51,420 versus $33,578 for females. The per capita income for the township was $25,084. About 1.3% of families and 3.3% of the population were below the poverty line, including 4.7% of those under age 18 and 1.4% of those age 65 or over.
Government and politics
Board of Supervisors
New Hanover is a second-class township and elects five at-large supervisors
