This might be a good Social Sciences Discussion Forum question.
I define my community as being physical surroundings and the people I regularly encounter within those surroundings. I would include all of the small (under 15,000 population) town in which I live with its houses, businesses, parks, churches, etc. as being my physical community. People I include in my community include the immediate family members in my home, the neighbors and coworkers I see on a nearly daily basis, friends I meet with regularly (worship services at church, coffee-and-conversation weekly gathering), and others who live in my town that I may not know personally but care about because we share proximity of space and concern for the welfare of each other.
The link below bases its definition of community on shared identity. Using that definition, my benchmarks are broader than it recommends, in that it isn't as concerned with the physical environment aspects.