SMPS is open to all residents, property owners and merchants who have an interest in preserving and maintaining our beautiful Historic District. The interests of merchants, residents and preservationists are inextricably intertwined...giving our Main Street village its unique character.

From the SMPS By-Laws. Object:
A non-profit organization founded by residents, shop owners, and property owners in Historic St. Charles, MO for the purpose of contributing to the work of historic conservation, encouraging the economic viability, and the growth of cultural activities in the South Main Historic District, while discouraging any misuse of the South Main Historic District.