Average price tells you quite a bit. If two homes that are very similar in size, condition, amenities, yard size and curb appeal are hundreds of thousands of dollars apart in price and value, it is probably because the cheaper one is in a worse neighborhood and the expensive one is in a nicer neighborhood.
Real Estate 101
There are some areas that I especially liked, as both a mom and a realtor, so if you want to compare notes, just call. I assume you're already working with a realtor so this isn't to solicit you away from your buyer's agent.
in the 5600 block of 19th Avenue and my clients LOVE it. We were fortunate to be able to speak to several of the neighbors about the neighborhood so that helped us make the decision to purchase this home. I've also had clients that could not wait to get out of that area so it's really a personal thing. Colonial Heights can be "spotty" so I'd enlist the help of an experienced Realtor to help you make your purchase. Good Luck!