Births by Age of Parents by County,
Oregon Residents, 1997-1999
YAMHILL COUNTY
| Total Births | Mother's Age |
| <15 | 15 | 16 | 17 | 18 | 19 | 20-24 | 25+ | N.S. |
| Total | 3,491 | 4 | 24 | 51 | 98 | 132 | 176 | 991 | 2,013 | 2 |
| Father's Age | <15 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 15 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 16 | 8 | 0 | 2 | 3 | 3 | 0 | 0 | 0 | 0 | 0 |
| 17 | 21 | 0 | 3 | 6 | 1 | 5 | 2 | 3 | 1 | 0 |
| 18 | 47 | 0 | 0 | 7 | 12 | 10 | 6 | 11 | 1 | 0 |
| 19 | 67 | 0 | 2 | 4 | 7 | 15 | 17 | 21 | 1 | 0 |
| 20 | 100 | 0 | 1 | 2 | 11 | 12 | 26 | 47 | 1 | 0 |
| 21 | 106 | 0 | 0 | 2 | 8 | 16 | 15 | 57 | 8 | 0 |
| 22 | 137 | 0 | 1 | 1 | 5 | 9 | 18 | 92 | 11 | 0 |
| 23 | 145 | 0 | 0 | 0 | 5 | 11 | 13 | 99 | 17 | 0 |
| 24 | 175 | 0 | 0 | 1 | 2 | 3 | 6 | 120 | 43 | 0 |
| 25+ | 2,291 | 0 | 1 | 0 | 5 | 13 | 33 | 414 | 1,825 | 0 |
| N.S. | 391 | 3 | 12 | 25 | 39 | 38 | 40 | 127 | 105 | 2 |