Chester Township is a township in Delaware County, Pennsylvania, United States. The population was 4,604 at the 2000 census.
According to the United States Census Bureau, the township has a total area of 1.4 square miles (3.6 km²).None of the area is covered with water.
There were 1,641 households out of which 39.7% had children under the age of 18 living with them, 35.1% were married couples living together, 30.8% had a female householder with no husband present, and 27.6% were non-families. 23.0% of all households were made up of individuals and 5.8% had someone living alone who was 65 years of age or older. The average household size was 2.81 and the average family size was 3.31.
In the township the population was spread out with 33.7% under the age of 18, 7.9% from 18 to 24, 29.5% from 25 to 44, 21.4% from 45 to 64, and 7.5% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 84.6 males. For every 100 females age 18 and over, there were 75.6 males.
The median income for a household in the township was $32,576, and the median income for a family was $34,391. Males had a median income of $31,845 versus $25,286 for females. The per capita income for the township was $16,072. About 16.2% of families and 17.1% of the population were below the poverty line, including 24.0% of those under age 18 and 23.3% of those age 65 or over.