If something is related to or benefits an individual citizen, it can be described as civic. People often say that it is your civic duty to vote.
The adjective civic comes from the Latin word civis, which was the word for a citizen of Ancient Rome. It is also a root word for "city," so civic can also mean anything related to a city. In your town, civic leaders meet frequently and public input is always welcome. So if you have a grievance about a civic issue, you should attend a meeting — or drop by the diner where the mayor always eats breakfast.