Although there are no official boundaries for the St. Mary's-by-the-Sea section of Black Rock, most often the section from Balmforth to the seawall comprising about 160 homes, has been what Black Rockers consider to be St. Mary's as it is the area closest to the the St. Mary's-by-the-Sea park and contains the city's highest rated Residential zone called Res AA (more land, more street frontage requirements than Res A zone). Balmforth Street is highlighted in red and Brewster Street is highlighted in green on the map above.
However, an article in the New York Times Real Estate section on May 19, 2010 called "Living in St. Mary's-by-the-Sea: A Waterfront Enclave" expands the boundaries to Brewster Street. Other articles in the NYT ("Living in Black Rock, Connecticut; A Community with Spirit, and an Edge" by Lisa Prevost published 8/8/04) have defined St. Mary's along more traditional lines, "Higher-priced properties are located at the tip of the Black Rock peninsula in the St. Mary's neighborhood. The name is short for St. Mary's by the Sea, a city-owned park consisting of a winding, shoreline walkway overlooking Black Rock Harbor and a small beach." ("If You're Thinking of Living in St. Mary's-by-the-Sea Connecticut; At Penninsula's End, A Waterside Enclave" by Lisa Prevost published June 9, 2002 by the NYT) "a neighborhood nestled at the tip of the Black Rock penninsula."
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