Jarrett Avenue crosses Bald Eagle Creek, connecting the center of town with U.S. Route 220 and the city of Lock Haven to the north.

[3] As of the census[6] of 2000, there were 1,189 people, 497 households, and 357 families residing in the CDP, figures representing about 96% of the population of the Township.

There are only 44 people, 19 households, and 15 families located outside of the CDP but within the township.

21.5% of all households were made up of individuals, and 9.9% had someone living alone who was 65 years of age or older.

Castanea is home to a few small little places that you could visit, there's a park called Harvey's Run Park and it is located on T366 street there's also a train station restaurant that goes along with the train station Museum/Hotel the train station restaurant being on Logan Ave and the Museum/Hotel being on Bridge St.