As of today, , there are 1 properties for sale in the 62521 area and 9 properties listed for sale in the city of Decatur. This single family residential home at 12 Knollwood Dr in ZIP code 62521 was last listed for $199,000. This is 953% above the current $18,900 median price for Decatur and 66% above the median of $120,000 for the ZIP code. Of the 9 properties for sale in Decatur, 8 are single family homes and 1 are condos. 12 Knollwood Dr is a single family residential home that is approximately — Sqft, 100% below the city median of 1,200 and 100% below the 62521 ZIP code median of 1,200. The price per square foot was — which is 100% below the current median price in 62521 of $100 and 100% below the Decatur median of $21 per Sqft.