|Elevation||112 ft (34.1 m)|
|Area||1.7 sq mi (4.4 km2)|
|- land||1.7 sq mi (4 km2)|
|- water||0.0 sq mi (0 km2), 0%|
|Density||5,665.1/sq mi (2,187.3/km2)|
|- summer (DST)||EDT (UTC-4)|
|Area code||610 and 484|
|GNIS feature ID||2390534|
Woodlyn is a census-designated place (CDP) in Delaware County, Pennsylvania, United States. The population was 9,485 at the 2010 census, down from 10,036 at the 2000 census. It is a part of Ridley Township, and children residing within the community generally attend schools in the Ridley School District. Woodlyn is served by the Woodlyn Fire Co. for fire, rescue and EMS services.
Woodlyn is located in the western part of Ridley Township at  It is bordered to the northeast by the Folsom part of Ridley Township, to the east by the borough of Ridley Park, to the south by the borough of Eddystone, to the southwest by the city of Chester, to the west by Nether Providence Township, and to the north by Springfield Township and the borough of Swarthmore. Interstate 476 (the Blue Route) and Interstate 95 intersect in the southern part of Woodlyn. Center City, Philadelphia, is 14 miles (23 km) to the northeast via I-95.(39.877812, -75.342238).
As of the census of 2000, there were 10,036 people, 3,960 households, and 2,637 families residing in the CDP. The population density was 6,100.8 people per square mile (2,348.4/km²). There were 4,132 housing units at an average density of 2,511.8/sq mi (966.9/km²). The racial makeup of the CDP was 87.88% White, 9.15% African American, 0.15% Native American, 1.18% Asian, 0.07% Pacific Islander, 0.34% from other races, and 1.24% from two or more races. Hispanic or Latino of any race were 1.38% of the population.
There were 3,960 households, out of which 30.9% had children under the age of 18 living with them, 48.4% were married couples living together, 14.0% had a female householder with no husband present, and 33.4% were non-families. 28.9% of all households were made up of individuals, and 13.5% had someone living alone who was 65 years of age or older. The average household size was 2.53 and the average family size was 3.16.
In the CDP the population was spread out, with 25.6% under the age of 18, 7.4% from 18 to 24, 29.8% from 25 to 44, 20.4% from 45 to 64, and 16.8% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 92.1 males. For every 100 females age 18 and over, there were 86.3 males.
The median income for a household in the CDP was $42,639, and the median income for a family was $49,590. Males had a median income of $40,066 versus $28,163 for females. The per capita income for the CDP was $20,899. About 8.9% of families and 11.8% of the population were below the poverty line, including 17.4% of those under age 18 and 12.5% of those age 65 or over.
- "Geographic Identifiers: 2010 Demographic Profile Data (G001): Woodlyn CDP, Pennsylvania". U.S. Census Bureau, American Factfinder. Retrieved January 4, 2016.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.