table: 1-1011906-1
columns: Regional County Municipality (RCM), Population Canada 2011 Census, Land Area, Density (pop. per km2), Seat of RCM
Q: what is the minimum population canada 2011 census with seat of rcm being cowansville
A: SELECT MIN Population Canada 2011 Census FROM 1-1011906-1 WHERE Seat of RCM = 'Cowansville'