| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Secemin | city | Swietokrzyskie | Poland | 50.77 | 19.84 | 859 | 2829 |
| Sechau | city | Kujawsko-Pomorskie | Poland | 53.46 | 17.49 | 830 | 4759 |
| Sechna | city | Malopolskie | Poland | 49.76 | 20.57 | 1669 | 9109 |
| Secymin Niemiecki | city | Mazowieckie | Poland | 52.40 | 20.43 | 183 | 3665 |
| Secymin Polski | city | Mazowieckie | Poland | 52.38 | 20.43 | 170 | 3173 |