21 Oak St, Ashaway, RI 02804 is a Single Family Residence property with 3 bedrooms, 2 bathrooms, and is approximately 1,351 sq feet of living space. The estimated market value for 21 Oak St, Ashaway, RI 02804 is $230,000, based on recent sales of similar homes and other property assessment information. Built in 1900, this Single Family Residence is located in Ashaway, RI in the zip code 02804. The nearest zip codes are 02891 , 06359 . Bradford, Pawcatuck and Hopkinton are the nearest cities.