It Hoarnleger is een straat te Sumar in de gemeente Tytsjerksteradiel en is gelegen in de Nederlandse provincie Friesland.
| Postcode | Huisnummers |
|---|---|
| 9262 NX | 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 18, 16, 14, 12, 10, 8, 6, 4, 2; |
| 9262 NZ | 31, 29, 27, 25, 23, 21, 19, 17, 15, 15A, 13, 11, 9, 7, 5; |