A real estate professional can point you to the information. Check out websites for Union County (where Linden is located), check municipal websites in addition to the school district sites Sharon recommended. Most Realtors have a community link on their websites as well. Good luck!

Dear P,
You can contact the local police for crime statistics. Also, try and find the local newspaper online and start reading that. It is a good source of information on an area.
You can also contact the Board of Education , perhaps look for them on the web and look up all that information that way.
Sharon Kozinn