Fitchburg is a nice area. You can actually find area statistics on trulia including crime and population/demographic info, etc.
If you want to know about schools this is a great website: http://www.greatschools.org - it will tell you how the schools rank overall and within every town.

Here is every home for sale in Fitchburg:
http://www.territoryre.com/idx/search.html?search=true&s…

Issues of neighborhood safety are best referred to the local police department or county sheriff's department. They have access to the most current and accurate information and are generally very willing to be helpful.