| Index | Saint-Sébastien | Quebec | National |
| Median household income | $65,310 | $72,311 | $82,436 |
| Unemployment rate | 3.4% | 3.7% | 6.4% |
| In labour force | 66.0% | 64.3% | 63.9% |
| Labour Type | Percent |
| Construction industry | 4.4% |
| Manufacturing sector | 8.1% |
| Financial & insurance services | 1.8% |
| Wholesale & retail services | 8.3% |
| Public administration | 1.8% |
| Transportation, warehousing & utilities | 5.1% |
| Education, health & social services | 5.5% |
| Other | 31.1% |
| City | Population | Household Income | National Avg. |
| Mont-Saint-Grégoire, QC | 3,146 | $89,319 | 8.3% |
| Saint-Alexandre, QC | 2,537 | $84,750 | 2.8% |
| Sainte-Brigide-d'Iberville, QC | 1,489 | $84,636 | 2.7% |
| Saint-Blaise-sur-Richelieu, QC | 2,223 | $81,193 | 1.5% |
| Saint-Jacques-le-Mineur, QC | 1,801 | $81,168 | 1.5% |
| Saint-Sébastien, QC | 645 | $65,310 | 20.8% |
| City | Population | Household Income | National Avg. |
| Littletown, AZ | 645 | n/a | |
| Inyokern, CA | 645 | n/a | |
| Coalville, IA | 645 | n/a | |
| Hookerton, NC | 645 | n/a | |
| Dillonvale village, OH | 645 | n/a | |
| Saint-Sébastien, QC | 645 | $65,310 | 20.8% |