Births by Age of Parents by County,
Oregon Residents, Yamhill County, 2005-2007 | ? | Mother's Age |
| <15 | 15 | 16 | 17 | 18 | 19 | 20-24 | 25+ | N.S. | Total |
| Father's Age | Total | 5 | 8 | 30 | 60 | 106 | 177 | 1052 | 2368 | 1 | 3807 |
| <15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 15 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| 16 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 3 |
| 17 | 0 | 0 | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 6 |
| 18 | 0 | 2 | 1 | 7 | 6 | 11 | 5 | 1 | 0 | 33 |
| 19 | 0 | 0 | 3 | 11 | 17 | 12 | 11 | 4 | 0 | 58 |
| 20 | 0 | 0 | 0 | 6 | 16 | 24 | 44 | 0 | 0 | 90 |
| 21 | 0 | 0 | 0 | 4 | 13 | 23 | 61 | 10 | 0 | 111 |
| 22 | 0 | 0 | 0 | 2 | 7 | 23 | 76 | 14 | 0 | 122 |
| 23 | 0 | 0 | 1 | 0 | 6 | 6 | 118 | 22 | 0 | 153 |
| 24 | 0 | 1 | 0 | 2 | 5 | 16 | 112 | 55 | 0 | 191 |
| 25+ | 0 | 0 | 0 | 3 | 12 | 28 | 493 | 2115 | 0 | 2651 |
| N.S. | 4 | 5 | 21 | 23 | 23 | 31 | 132 | 147 | 1 | 387 |