A few possibilities:
- Do an internet search of community development grants available for your city/county/state. Often the states have block grants that let them support this kind of activity.
- Check out this article about grants for nonprofits. It will give you some good tips about how to go about finding government as well as private and foundation grants.
- Take a look at the tomsofmaine website and their program called "50 states for good." They support programs that "do good in their communities" and in 2015 they provided $20,000 to grassrotts nonprofits in each state in the U.S. Your timing might be good to apply for their 2017 grant program.