The phrase "difference in one's community" refers to the impact or change that an individual brings about in the place where they live, making it better or influencing it in some way. Full definition
We have the materials and the resources to really make differences in our communities, but rather than embrace this new season, many of us simply complain about its difficulties. (relevantmagazine.com)
Are you seeking to make a real difference in your community by helping others and giving back? (entrepreneur.com)
Let us pause to note the recent passing of two gentlemen who made a positive difference in our community. (miamiherald.com)