Linwood is a census-designated place (CDP) in Delaware County, Pennsylvania, United States. The population was 3,281 at the 2010 census.
Linwood is located in southern Delaware County at 39°49′33″N 75°25′22″W (39.825945, -75.422808). It occupies the eastern half of Lower Chichester and is home to more than 90% of the township's population. It is bordered to the south by the borough of Marcus Hook and to the east by the borough of Trainer. The northern border is with Upper Chichester Township.
According to the United States Census Bureau, the Linwood CDP has a total area of 0.50 square miles (1.3 km2), all of it land.
Linwood is a part of Chichester School District. Children within the area usually attend Linwood Elementary School (Grades K-4), Chichester Middle School (Grades 5-8), or Chichester High School (Grades 9-12).
Holy Family Regional Catholic School in Aston is the area Catholic school. It formed in 2012 from a merger of Holy Savior-St. John Fisher Elementary School in Linwood and St.