Tabel 3.5 Jumlah Penduduk Menurut Kelompok Umur dan Jenis Kelamin di Desa Mataiwoi, 2026
| UMUR | LAKI-LAKI | PEREMPUAN | TOTAL |
| 0-4 | 23 | 19 | 42 |
| 5-9 | 29 | 26 | 55 |
| 10-14 | 21 | 25 | 46 |
| 15-19 | 41 | 16 | 57 |
| 20-24 | 36 | 31 | 67 |
| 25-29 | 28 | 25 | 53 |
| 30-34 | 19 | 22 | 41 |
| 35-39 | 14 | 20 | 34 |
| 40-44 | 31 | 25 | 56 |
| 45-49 | 33 | 29 | 62 |
| 50-54 | 33 | 26 | 59 |
| 55-59 | 25 | 15 | 40 |
| 60-64 | 10 | 11 | 21 |
| 65-69 | 8 | 6 | 14 |
| 70-74 | 8 | 10 | 18 |
| 75+ | 20 | 11 | 31 |
| MATAIWOI | 379 | 317 | 696 |