| Beauharnois-Salaberry | |
| Settlement Type: | Regional county municipality |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Type2: | Region |
| Subdivision Name2: | Montérégie |
| Established Title: | Effective |
| Established Date: | January 1, 1982 |
| Seat Type: | County seat |
| Seat: | Beauharnois |
| Government Type: | Prefecture |
| Leader Title: | Prefect |
| Leader Name: | Yves Daoust |
| Area Footnotes: | [1] |
| Area Total Km2: | 523.10 |
| Area Land Km2: | 471.26 |
| Population Total: | 68,322 |
| Population As Of: | 2021 |
| Population Density Km2: | 145.8 |
| Population Blank1 Title: | Change 2011–2021 |
| Population Blank1: | 10.3% |
| Population Blank2 Title: | Dwellings |
| Population Blank2: | 31,245 |
| Timezone: | EST |
| Utc Offset: | −5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −4 |
| Postal Code Type: | Postal code(s) |
| Area Codes: | 450 and 579 |
Beauharnois-Salaberry is a regional county municipality in the Montérégie region of Quebec, Canada. Its seat is Beauharnois.
The RCM was formed by combining the historic counties of Beauharnois and Châteauguay.
There are 7 subdivisions within the RCM:
| Canada Census Mother Tongue – Beauharnois-Salaberry Regional County Municipality[2] | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census | Total | ||||||||||||||||||
| Year | Responses | Count | Trend | Pop % | Count | Trend | Pop % | Count | Trend | Pop % | Count | Trend | Pop % | ||||||
| 59,430 | 2.5% | 94.2% | 2,050 | 6.5% | 3.3% | 595 | 7.8% | 0.9% | 985 | 61.5% | 1.6% | ||||||||
| 58,000 | 2.6% | 94.80% | 1,925 | 13.6% | 3.15% | 645 | 84.3% | 1.05% | 610 | 25.6% | 1.00% | ||||||||
| 56,540 | 2.1% | 95.18% | 1,695 | 4.8% | 2.85% | 350 | 14.6% | 0.59% | 820 | 60.8% | 1.38% | ||||||||
| 55,360 | 1.7% | 95.35% | 1,780 | 13.4% | 3.07% | 410 | 14.6% | 0.71% | 510 | 20.0% | 0.88% | ||||||||
| 56,315 | n/a | 95.79% | 1,570 | n/a | 2.67% | 480 | n/a | 0.82% | 425 | n/a | 0.72% | ||||||||
Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border:[3]
Protected areas: