Monroe County Real Estate View 1438 listings HomeGuidesMonroe County Monroe County – is comprised of 19 towns, 10 villages and the City of Rochester, the third largest city in the state, with a combined population of approximately 750,000 residents and a land are a of 663.21 square miles. Guides BrightonPenfieldPerintonPittsfordVictorWebsterMonroe CountyWayne CountyLuxury HomesNew Homes