The most people with last name
Sieffert lives in:
| Pittsburgh, PA | 3 |
| Dallas, TX | 2 |
| Long Lake, WI | 2 |
| Tucson, AZ | 1 |
| Los Angeles, CA | 1 |
| Stuart, FL | 1 |
| Vero Beach, FL | 1 |
| Bowie, MD | 1 |
| Manchester, PA | 1 |
| Central, SC | 1 |
| Clemson, SC | 1 |
| Allen, TX | 1 |
| Denton, TX | 1 |
| Donna, TX | 1 |
| Lake Dallas, TX | 1 |
| Everett, WA | 1 |
| Arbor Vitae, WI | 1 |
| Beaver Dam, WI | 1 |
