According to the United States Census Bureau, the township has a total area of, of which is land and, or 7.33%, is water.
Demographics
At the 2010 census, the township was 80.8% non-Hispanic White, 1.4% Black or African American, 14.1% Asian, and 1.3% were two or more races. 2.4% of the population were of Hispanic or Latino ancestry. As of the census of 2000, there were 6,850 people, 2,132 households, and 1,874 families residing in the township. The population density was 637.2 people per square mile. There were 2,167 housing units at an average density of 201.6/sq mi. The racial makeup of the township was 97.40% White, 0.70% African American, 0.06% Native American, 1.12% Asian, 0.20% from other races, and 0.51% from two or more races. Hispanic or Latino of any race were 0.96% of the population. There were 2,132 households, out of which 55.0% had children under the age of 18 living with them, 81.7% were married couples living together, 4.5% had a female householder with no husband present, and 12.1% were non-families. 9.7% of all households were made up of individuals, and 1.8% had someone living alone who was 65 years of age or older. The average household size was 3.21 and the average family size was 3.46. In the township the population was spread out, with 35.0% under the age of 18, 4.8% from 18 to 24, 32.5% from 25 to 44, 23.7% from 45 to 64, and 4.0% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 100.1 males. For every 100 females age 18 and over, there were 97.7 males. The median income for a household in the township was $96,711, and the median income for a family was $101,895. Males had a median income of $76,206 versus $37,404 for females. The per capita income for the township was $33,256. About 2.0% of families and 2.5% of the population were below the poverty line, including 3.8% of those under age 18 and 6.7% of those age 65 or over.
Transportation
Upper Uwchlan Township is traversed by only one main state route, Route 100. PA Route 401 skims the northeastern edge of the township as well; the two routes meet in West Vincent Township. The Pennsylvania Turnpike/Interstate 76 also cuts through the township, crossing over Route 100 in the far southern section of the township. The actual double trumpet interchange between the two roads, however, is located a mile and a half south of the overpass, in Uwchlan Township. Public transportation is not available in Upper Uwchlan Township.