East Rockhill's villages include Hagersville, Rich Hill, Rockhill, Rockhill Station, Rock Ridge, Smoketown (also in West Rockhill), Sterners Mill, Weisel, and White Horse.[4]
As of the 2010 census, the township was 95.8% White, 0.7% Black or African American, 0.2% Native American, 0.6% Asian, and 1.2% were two or more races. 1.6% of the population were of Hispanic or Latino ancestry.[7]
As of the census[8] of 2000, there were 5,199 people, 1,828 households, and 1,427 families residing in the township. The population density was 401.5 inhabitants per square mile (155.0/km2). There were 1,883 housing units at an average density of 145.4 per square mile (56.1/km2). The racial makeup of the township was 97.19% White, 0.81% African American, 0.40% Native American, 0.38% Asian, 0.06% Pacific Islander, 0.19% from other races, and 0.96% from two or more races. Hispanic or Latino of any race were 1.25% of the population.
There were 1,828 households, out of which 40.4% had children under the age of 18 living with them, 68.6% were married couples living together, 5.8% had a female householder with no husband present, and 21.9% were non-families. 17.1% of all households were made up of individuals, and 5.4% had someone living alone who was 65 years of age or older. The average household size was 2.82 and the average family size was 3.21.
In the township the population was spread out, with 28.8% under the age of 18, 6.3% from 18 to 24, 32.5% from 25 to 44, 23.6% from 45 to 64, and 8.9% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 102.1 males. For every 100 females age 18 and over, there were 101.0 males.
The median income for a household in the township was $59,663, and the median income for a family was $70,645. Males had a median income of $43,134 versus $30,473 for females. The per capita income for the township was $24,594. About 2.0% of families and 4.9% of the population were below the poverty line, including 3.0% of those under age 18 and 7.6% of those age 65 or over.
Transportation
PA 313 westbound and PA 563 northbound in East Rockhill Township
As of 2022 there were 48.33 miles (77.78 km) of public roads in East Rockhill Township, of which 11.19 miles (18.01 km) were maintained by the Pennsylvania Department of Transportation (PennDOT) and 37.14 miles (59.77 km) were maintained by the township.[9]
The main highways serving East Rockhill Township are Pennsylvania Route 313 and Pennsylvania Route 563. PA 313 follows a southeast-northwest alignment following Dublin Pike across northeastern portions of the township. PA 563 follows a north-south alignment utilizing Ridge Road, Dublin Pike and Mountain View Drive across the eastern portion of the township. The two highways have a concurrency along a portion of Dublin Pike.
There is currently no public transportation in East Rockhill Township.[10]
Climate
According to the Köppen climate classification system, East Rockhill Twp has a Hot-summer, Humid continental climate (Dfa). Dfa climates are characterized by at least one month having an average mean temperature ≤ 32.0 °F (0.0 °C), at least four months with an average mean temperature ≥ 50.0 °F (10.0 °C), at least one month with an average mean temperature ≥ 71.6 °F (22.0 °C) and no significant precipitation difference between seasons. Although most summer days are slightly humid in East Rockhill Twp, episodes of heat and high humidity can occur with heat index values > 104 °F (40 °C). Since 1981, the highest air temperature was 101.5 °F (38.6 °C) on July 22, 2011, and the highest daily average mean dew point was 74.3 °F (23.5 °C) on August 12, 2016. The average wettest month is July, which corresponds with the annual peak in thunderstorm activity. Since 1981, the wettest calendar day was 6.73 inches (171 mm) on August 27, 2011. During the winter months, the average annual extreme minimum air temperature is −2.8 °F (−19.3 °C).[11] Since 1981, the coldest air temperature was −13.7 °F (−25.4 °C), on January 22, 1984. Episodes of extreme cold and wind can occur with wind chill values < −14 °F (−26 °C). The average annual snowfall (Nov-Apr) is between 30 inches (76 cm) and 36 inches (91 cm). Ice storms and large snowstorms depositing ≥ 12 inches (30 cm) of snow occur once every few years, particularly during nor’easters from December through February.
Climate data for East Rockhill Twp, Elevation 469 ft (143 m), 1981-2010 normals, extremes 1981-2018
According to the A. W. Kuchler U.S. potential natural vegetation types, East Rockhill Twp would have a dominant vegetation type of Appalachian Oak (104) with a dominant vegetation form of Eastern Hardwood Forest (25).[13] The plant hardiness zone is 6b with an average annual extreme minimum air temperature of −2.8 °F (−19.3 °C).[11] The spring bloom typically begins by April 14 and fall color usually peaks by October 26.
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