| Name | Saarlouis |
| Office head of government | |
| Mayor | |
| Image |  |
| Area (m²) | 43,270,000 |
| Date founded | 1680 |
| Elevation (m) | 181 |
| Country | Germany |
| Administrative division | Saarland |
| Continent | Europe |
| Latitude (°) | 49.3166656494 |
| Waterbody | |
| Longitude (°) | 6.7500000000 |
| Website | https://www.saarlouis.de/ |
| Population (people) | 34,552 (30/09/2019) |
| Demonym |