Montgomery, IL Prices for Houses for Sale AVERAGE 306,413 +10% MEDIAN 272,500 +5% Relative Price (per sqft.) PRICE Listings of Montgomery Homes for Purchase ACTIVE 21 +5% NEW 40 0% Market Duration of Homes Sold DAYS 34 +3% Local Statistics Population 20,181 (0.03%) House Size (sqft.) 1,752 (4.57%)