| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sierk | city | Lorraine | France | 49.44 | 6.36 | 830 | 7649 |
| Sierkas | city | Lefkosia | Cyprus | 35.02 | 33.34 | 928 | 9637 |
| Sierki | city | Podlaskie | Poland | 53.18 | 22.73 | 830 | 2532 |
| Sierks | city | New York | United States | 42.82 | -78.30 | 1105 | |
| Sierksdorf | city | Schleswig-Holstein | Germany | 54.07 | 10.77 | 3 | 14119 |
| Sierksdorf/Hof Altona Airport | airport | 54.07 | 10.74 | 79 | 0 | ||
| Sierksrade | city | Schleswig-Holstein | Germany | 53.74 | 10.60 | 62 | 3197 |
| Sierkuci | city | Vitebskaya Oblast' | Belarus | 54.70 | 29.85 | 830 | 1490 |
| Sierkuli | city | Minskaya Oblast' | Belarus | 53.89 | 26.70 | 830 | 1791 |
| Sierkuli | city | Minskaya Oblast' | Belarus | 53.76 | 26.74 | 830 | 1937 |