Ottawa County is in Northwest Ohio. Of the 88 counties in the state, Ottawa County ranks 16th in terms of size (585 square miles). Ottawa County, Ohio, has roughly 1,000 acres of residential land and property for sale based on recent Land Network data. The combined market value of farms and ranches for sale here was about $30 million. The average price of residential land for sale in Ottawa County was $1 million. Browse all residential land and rural property for sale in Ohio to find residential land and properties that suit your lifestyle needs, from existing residential homes and estates to land ready for future residential-property development.