Callao Real EstateCallao 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 Callao real estate agent to arrange a tour today! Callao, Utah has a population of 76. The median household income in Callao, Utah is $19,375. The median household income for the surrounding county is $66,542 compared to the national median of $57,652. The median age of people living in Callao is 35.5 years. Callao WeatherThe average high temperature in July is 92.5 degrees, with an average low temperature in January of 10.8 degrees. The average rainfall is approximately 8.9 inches per year, with 8 inches of snow per year. Nearby Homes for Sale |