Riddlewood is a residential housing development in Middletown Township, Delaware County, Pennsylvania, United States, a suburb of Philadelphia. The name comes from famous racehorse owner Samuel D. Riddle, who owned the property before it was developed in the 1950s.^[1] The names of the streets in Riddlewood are named after Sam Riddle's horses as follows: Man o' War, War Admiral, War Trophy, Rampart East, Rampart West, Anamosa, and Soldier Song.

Riddlewood, Pennsylvania
Riddlewood, Pennsylvania Location of Riddlewood in Pennsylvania
Coordinates: 39°54′20″N 75°25′57″W / 39.90556°N 75.43250°W / 39.90556; -75.43250
Country	United States
State	Pennsylvania
County	Delaware
Township	Middletown
Elevation	262 ft (80 m)
Time zone	UTC-5 (EST)
• Summer (DST)	UTC-4 (EDT)
Zip code	19063
Area code	610

There is also a Riddlewood Drive and a Palmer's Lane. The land for Riddlewood was purchased from the estate of Sam Riddle by the Arters Brothers. They, along with architect George Hay, developed the 218-acre (0.88 km²) site. There are three types of houses in the neighborhood, ranch, split-level, and a few Cape Cods. Riddlewood is as much a sought after neighborhood today as it was 50 years ago. Sam Riddle regained some notoriety in recent years because of his mention in the popular film and book Seabiscuit.