In Thornton, during July 2016, there were 30% fewer homes in the market than a year earlier in July 2015. The video real estate market report below provides more information about the current real estate market in Thornton. The median listing price for homes for sale in Thornton was just below $350,000, up $50,000 from the median listing price one year ago, which was $299,900. The median sales price was just over $310,000. Learn more. Watch the video market report below.