| Index | Saint-Mathias-sur-Richelieu/100k people | Quebec/100k people | National/100k people |
| Total crime | 1,478 (estimate) | 2,478 | 4,223 |
| Violent crime | 501 (estimate) | 840 | 1,042 |
| Property crime | 977 (estimate) | 1,638 | 3,181 |
| Statistic | Saint-Mathias-sur-Richelieu | Quebec | National |
| Total incidents | n/a | 308,070 | 2,225,600 |
| Incidents per 100k | n/a | 3,593 | 5,856 |
| Change in 100k rate | n/a | -11.6% | -9.8% |
| Statistic | Saint-Mathias-sur-Richelieu | Quebec | National |
| All (12+ years) | n/a | 1,469 | 1,709 |
| Youths (12-17) | n/a | 1,205 | 1,108 |
| Adults (18+) | n/a | 1,489 | 1,757 |
| Statistic | Saint-Mathias-sur-Richelieu | Quebec | National |
| Clearance rate | n/a | 45 | 37 |
| Clearance rate change | n/a | -1.1% | 0.2% |
| Clearance rate violent | n/a | 67 | 58 |
| Clearance rate property | n/a | 31 | 27 |
| Statistic | Saint-Mathias-sur-Richelieu | Quebec | National |
| Total | n/a | -7.5% | -7.9% |
| Violent | n/a | -0.8% | -3.6% |
| Property | n/a | -11.2% | -9.8% |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Candiac, QC | 25,341 | 344 | 670 | 1,013 |
| Carignan, QC | 11,123 | 355 | 693 | 1,048 |
| Saint-Mathieu-de-Beloeil, QC | 2,671 | 358 | 698 | 1,055 |
| Saint-Bruno-de-Montarville, QC | 26,923 | 406 | 792 | 1,199 |
| Saint-Lambert, QC | 22,414 | 408 | 795 | 1,203 |
| Mont-Saint-Hilaire, QC | 19,745 | 419 | 818 | 1,237 |
| Otterburn Park, QC | 8,571 | 436 | 850 | 1,287 |
| Saint-Mathias-sur-Richelieu, QC | 4,837 | 501 | 977 | 1,478 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Cornwallis, MB | 4,840 | 1,037 | 2,726 | 3,764 |
| Carbonear, NL | 4,834 | 996 | 2,531 | 3,527 |
| Vanderhoof, BC | 4,832 | 1,636 | 7,186 | 8,822 |
| Jasper, AB | 4,828 | 1,228 | 5,142 | 6,370 |
| Fraser-Fort George D, BC | 4,848 | 718 | 3,153 | 3,870 |
| Saint-Mathias-sur-Richelieu, QC | 4,837 | 501 | 977 | 1,478 |