Population less than 15 years (Persons)
| 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 |
| Zuid-Holland | 633.136 | 635.225 | 613.847 | 615.287 | 616.890 | 616.051 | 613.862 | 613.415 | 611.986 | 612.195 | 612.494 |
| Noord-Holland | 448.015 | 466.657 | 461.134 | 462.983 | 463.208 | 462.374 | 459.738 | 458.077 | 455.618 | 453.948 | 451.847 |
| Noord-Brabant | 439.030 | 443.324 | 422.084 | 419.551 | 416.898 | 412.706 | 407.196 | 402.914 | 397.773 | 394.701 | 391.196 |
| Gelderland | 363.688 | 373.936 | 360.421 | 358.051 | 355.349 | 351.592 | 347.052 | 342.793 | 338.314 | 334.972 | 332.072 |
| Utrecht | 210.068 | 224.548 | 228.282 | 229.721 | 230.156 | 230.410 | 229.879 | 229.563 | 228.707 | 227.995 | 227.435 |
| Overijssel | 209.774 | 215.709 | 212.831 | 212.564 | 211.610 | 209.946 | 207.661 | 204.876 | 201.939 | 199.313 | 196.532 |
| Limburg | 196.787 | 188.408 | 169.343 | 166.517 | 163.850 | 160.930 | 157.554 | 154.472 | 151.349 | 149.136 | 147.008 |
| Friesland | 118.809 | 121.592 | 117.305 | 116.545 | 115.415 | 114.183 | 112.519 | 110.850 | 108.750 | 107.064 | 105.398 |
| Groningen | 94.549 | 96.343 | 91.737 | 91.015 | 90.518 | 89.508 | 88.238 | 87.121 | 85.681 | 84.558 | 83.354 |
| Flevoland | 75.644 | 84.018 | 83.138 | 83.442 | 83.339 | 82.863 | 81.805 | 80.869 | 80.027 | 79.401 | 78.935 |
| Drenthe | 87.286 | 89.414 | 87.486 | 86.718 | 85.523 | 84.272 | 82.526 | 80.874 | 79.186 | 78.818 | 77.268 |
| Zeeland | 68.757 | 69.400 | 65.303 | 64.681 | 63.903 | 63.087 | 62.044 | 61.242 | 60.442 | 59.667 | 59.085 |