A Community is when people living in one place, district, state, or country (NEAP, 2000).
Other definition:
Community is a mutually supportive, geographically specific social unit such as a rural village or tribe. In an urban, Western context, the phrase is often used more loosely, to describe people with common interests, ethnic origins, etc.
The Travel-Glossary: Everything about Travelling, Sightseeing and the World.