Mill River Senior Residences is multifamily apartment complex that was constructed in 1970. It is located at 40 Maine Avenue in Oceanside, Long Island, and features a total number of 175 units. The property’s unit mix is a combination of Four Bedroom/One and One Half Bath, One Bedroom, Studio, Three Bedroom/One Bath, Two Bedroom/One Bath, with a total unit size of 97,109 SqFt.