I feel there are good areas and bad areas of Oceanside, and sometimes they can be right next to each other. It's important to use a local knowledgeable Realtor to help you with this kind of information since you will be new to the area.
We have a great website put out by all the police stations in the county which will show you crime activity for any 3 month period. Sometimes the website is a little hard to use, but the information is invaluable:
I like Rancho Del Oro region which is between Oceanside Blvd and Hwy 76, and Rancho Del Oro Rd and N. Santa Fe. The area is generally well maintained, reasonable house prices, good schools in both the Oceanside and Vista school districts, and close to shops and services. Fire Mountain, Jeffries Ranch, and Ocean Hills are also popular for differing reasons.
What kind of home and price range did you have in mind?
Look to a Realtor to provide you with all relevant information about neighborhoods and
address your concerns.
If I can be of assistance please call.