Zelinja Srednja
Zelinja Srednja is a village in the municipality of Gradačac, Bosnia and Herzegovina.
Demographics
According to the 2013 census, its population was 1,253.| Ethnicity | Number | Percentage |
| Bosniaks | 1,232 | 98.3% |
| Croats | 1 | 0.1% |
| other/undeclared | 20 | 1.6% |
| Total | 1,253 | 100% |