As of today, , there are 197 properties for sale in the 60056 area and 197 properties listed for sale in the city of Mount Prospect. This condominium (residential) home at 20 S Main St #3-407 in ZIP code 60056 was last listed for $258,000. This is 19% below the current $319,900 median price for Mount Prospect and 19% below the median of $319,900 for the ZIP code. Of the 197 properties for sale in Mount Prospect, 134 are single family homes and 63 are condos. 20 S Main St #3-407 is a condominium (residential) home that is approximately — square feet, 100% below the city median of 1,600 and 100% below the 60056 ZIP code median of 1,600. The price per Sqft was — which is 100% below the current median price in 60056 of $182 and 100% below the Mount Prospect median of $182 per square foot.