Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Regional County Municipality (RCM) | Population Canada 2011 Census | Land Area | Density (pop. per km2) | Seat of RCM |
| --- | --- | --- | --- | --- |
| Acton | 15381.0 | km2 (sqmi) | 26.5 | Acton Vale |
| Brome-Missisquoi | 55621.0 | km2 (sqmi) | 33.7 | Cowansville |
| La Haute-Yamaska | 85042.0 | km2 (sqmi) | 133.6 | Granby |
| La Vallée-du-Richelieu | 116773.0 | km2 (sqmi) | 198.3 | McMasterville |
| Le Haut-Richelieu | 114344.0 | km2 (sqmi) | 122.1 | Saint-Jean-sur-Richelieu |
| Les Maskoutains | 84248.0 | km2 (sqmi) | 64.7 | Saint-Hyacinthe |
Question:
what is the minimum population canada 2011 census with seat of rcm being cowansville
Answer:
55621.0