Welcome to Overland Park KS. Overland Park is a city in Kansas with a population of 188,687. Overland Park is in Johnson County and is one of the best places to live in Kansas. Living in Overland Park offers residents a dense suburban feel and most residents own their homes. In Overland Park there are a lot of restaurants, coffee shops, and parks. Many families and young professionals live in Overland Park and residents tend to lean conservative. The public schools in Overland Park are highly rated.