Bel Marin Keyes Real EstateBel Marin Keyes real estate listings include condos, townhomes, and single family homes for sale. Commercial properties are also available. If you see a property you’re interested in, contact a Bel Marin Keyes real estate agent to arrange a tour today! Bel Marin Keyes, California has a population of 27,689. The median household income in Bel Marin Keyes, California is $89,812. The median household income for the surrounding county is $104,703 compared to the national median of $57,652. The median age of people living in Bel Marin Keyes is 45 years. Bel Marin Keyes WeatherThe average high temperature in July is 81.1 degrees, with an average low temperature in January of 40.1 degrees. The average rainfall is approximately 32.2 inches per year, with 0 inches of snow per year. Nearby Homes for Sale |