Merrimac Square | 6526 W Irving Park Condos is one of Chicago's residencies in Dunning, on the city's Norht-West side. The architecture of Merrimac Square | 6526 W Irving Park is an easily identifiable trait of Dunning. The average selling price for properties in the area were $228,177 which is roughly $198 /SqFt. Merrimac Square | 6526 W Irving Park is located in zip code 60634, home to families, with an average size of 3.2 members.