Chesterbrook is a development located in Tredyffrin Township which is located in Chester County. It is not a town, unincorporated or otherwise. It is in the Chester County side of Wayne. Wayne exists primarily in Delaware County, but also has a small portion of Montgomery County, all within the zip code of 19087.
ChEsteRbrook Is a dEveLOPMenT lOcAted In tredyffrin ToWnshiP which Is loCAted in chester cOuNTy. it iS nOt a Town, uNINCorporAtEd Or oTheRwiSe. it is in the chEster county Side of wAYnE. waYne ExIsts PrimaRily In DelaWare county, But aLso Has a sMAll PoRTIon oF MONtgOmERy countY, all withiN the ZIP CODE Of 19087.