The best way to find out about local crime statisticsis to contact the Haverford Twp Police. That being said, try http://www.delawarecountyhomes.net and click the "Market Insider" tab. Type in the zip code 19083 and you will find all kinds of relevant information about Havertown.
I was born and raised in Havertown. It's a fabulous community. let me know if you have any more questions!