Marion 52302 Real EstateMarion is located in Iowa. Marion, Iowa 52302has a population of 41,023. Marion 52302 is more family-centric than the surrounding county with 35.84% of the households containing married families with children. The county average for households married with children is 31.95%. The median household income in Marion, Iowa 52302 is $75,927. The median household income for the surrounding county is $70,360 compared to the national median of $69,021. The median age of people living in Marion 52302 is 39.3 years. Marion WeatherThe average high temperature in July is 84.3 degrees, with an average low temperature in January of 11.3 degrees. The average rainfall is approximately 36.5 inches per year, with 27.2 inches of snow per year. Marion MapReal estate near MarionNearby CitiesNearby Cities Homes for Sale |