As of , there are 218 properties listed for sale in the city of Alton and 218 properties listed for sale in the ZIP code 62002. Those 218 Alton properties include 216 single family homes and 2 condos. This single family residential home located at 1042 Tremont St in 62002 was last listed for $52,000. This is 35% below the median of $79,900 for that ZIP code and 35% below the current median price of $79,900 for Alton. 1042 Tremont St is roughly 1,346 square feet, which is 2% above the Alton median of 1,322 and 2% above the 62002 ZIP code median of 1,322. This property's price per Sqft was $39, which is 41% below the current median price in 62002 of $66 and 41% below the Alton median of $66 per Sqft.