As of today, , there are 127 properties for sale in the 15642 area and 127 properties listed for sale in the city of Irwin. This single family residential home at 117 Old Farm Rd in ZIP code 15642 was last listed for $142,000. This is 16% below the current $169,900 median price for Irwin and 16% below the median of $169,900 for the ZIP code. Of the 127 properties for sale in Irwin, 120 are single family homes and 7 are condos. 117 Old Farm Rd is a single family residential home that is approximately 1,024 Sqft, 0% above the city median of 0 and 0% above the 15642 ZIP code median of 0. The price per square foot was $139 which is 0% above the current median price in 15642 of $0 and 0% above the Irwin median of $0 per Sqft.