http://www.west-chester.com
Heres a previous discussion about West Chester with a few photos of the town.
http://www.city-data.com/forum/penns...-dont-see.html
http://www.downingtown.org
http://www.weichertrents.com (private listing + apartment search engines)
http://www.4wallsinphilly.com ( Chester County)
As William said there are alot of apartment complexes/townhouses along route 3 heading into West Chester( East Goshen and West Goshen) Google those 2 areas + West Chester for apartments/ homes for rent, and that should help you out.
Its going to be a big change for you. The Coatesville,Downingtown,Exton,West Chester area is going to be very countryesque, slower if you are coming from Vancouver.
Its a nice area but at a fairly slow pace compared to Vancouver. Great schools, no crime to speak of, great quality of living. As the Philly metro continues to migrate north + west these towns are the next frontier heading west, lots of BMW's,Mercedes,Lexuses etc. in all those 3 areas.