Another website you can visit is http://www.city-data.com/zips/32277.html. It will tell you the population density, age demographics, business in the area, how many homes are owned versus rentals... all this information can be useful in deciding which neighborhood is right for you.
If you need any assistance I can help (email@example.com). That area is called Arlington/Ft Caroline. Jacksonville is the largest land mass city in the USA, but it is divided into sections... In my opinion each section is like it's own little city having good and bad parts... I agree driving through the neighborhood at different times of the day is really the best way to discover what a neighborhood is really like.