Leeftijdsopbouw per vijfjaarsgroepen 2023| man | vrouw |
|---|
| Gemeente Nieuwkoop | Hollands Midden | Gemeente Nieuwkoop | Hollands Midden |
|---|
| 0-4 | 769 | 21.992 | 788 | 20.839 |
|---|
| 5-9 | 753 | 22.130 | 729 | 21.055 |
|---|
| 10-14 | 840 | 23.260 | 724 | 22.513 |
|---|
| 15-19 | 800 | 24.449 | 785 | 23.795 |
|---|
| 20-24 | 893 | 26.807 | 772 | 28.337 |
|---|
| 25-29 | 814 | 26.395 | 798 | 26.319 |
|---|
| 30-34 | 912 | 28.246 | 875 | 27.343 |
|---|
| 35-39 | 850 | 25.593 | 836 | 25.410 |
|---|
| 40-44 | 813 | 24.447 | 812 | 24.859 |
|---|
| 45-49 | 862 | 24.138 | 826 | 24.504 |
|---|
| 50-54 | 1.052 | 28.918 | 1.071 | 29.832 |
|---|
| 55-59 | 1.251 | 29.569 | 1.146 | 29.715 |
|---|
| 60-64 | 1.138 | 27.136 | 1.169 | 27.799 |
|---|
| 65-69 | 949 | 23.377 | 923 | 24.096 |
|---|
| 70-74 | 799 | 21.209 | 815 | 21.989 |
|---|
| 75-79 | 765 | 17.292 | 708 | 19.055 |
|---|
| 80-84 | 381 | 9.699 | 420 | 12.173 |
|---|
| 85-89 | 166 | 4.802 | 271 | 7.530 |
|---|
| 90-94 | 53 | 1.658 | 95 | 3.401 |
|---|
| 95 en ouder | 8 | 267 | 32 | 915 |
|---|