| Population Projection Series | |||||||||||||||
| June 29, 2000 | |||||||||||||||
| Sussex County | |||||||||||||||
| Total Population | |||||||||||||||
| [As of July 1] | |||||||||||||||
| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2005 | 2010 | 2015 | 2020 | |
| 0 - 4 | 7992 | 8176 | 8346 | 8459 | 8551 | 8540 | 8596 | 8629 | 8717 | 8781 | 8851 | 9060 | 9530 | 9878 | 10206 |
| 5 - 9 | 7898 | 7982 | 8058 | 8115 | 8227 | 8273 | 8495 | 8645 | 8783 | 8933 | 9073 | 8620 | 8848 | 9065 | 9368 |
| 10 - 14 | 7374 | 7664 | 7953 | 8214 | 8459 | 8617 | 8736 | 8789 | 8886 | 8964 | 9046 | 9922 | 9446 | 9438 | 9638 |
| 15 - 19 | 6794 | 6739 | 6839 | 7032 | 7300 | 7608 | 7959 | 8243 | 8561 | 8884 | 9212 | 9877 | 10858 | 10064 | 10023 |
| 20 - 24 | 6924 | 6962 | 6942 | 6819 | 6660 | 6486 | 6502 | 6608 | 6855 | 7041 | 7262 | 8753 | 9394 | 10069 | 9316 |
| 25 - 29 | 8616 | 8381 | 8114 | 7868 | 7652 | 7521 | 7630 | 7584 | 7480 | 7410 | 7319 | 6651 | 8051 | 8401 | 8981 |
| 30 - 34 | 9050 | 9354 | 9615 | 9847 | 10053 | 10272 | 10024 | 9668 | 9351 | 9040 | 8741 | 8891 | 8063 | 9476 | 9876 |
| 35 - 39 | 8540 | 8914 | 9320 | 9743 | 10108 | 10482 | 10880 | 11158 | 11421 | 11706 | 11982 | 9695 | 9887 | 8716 | 10205 |
| 40 - 44 | 7603 | 8063 | 8293 | 8663 | 9051 | 9506 | 9956 | 10365 | 10816 | 11275 | 11751 | 13505 | 11005 | 10918 | 9573 |
| 45 - 49 | 6210 | 6478 | 6989 | 7352 | 7717 | 8132 | 8660 | 8885 | 9270 | 9597 | 9969 | 12350 | 14220 | 11296 | 11170 |
| 50 - 54 | 5313 | 5534 | 5808 | 6141 | 6413 | 6705 | 7021 | 7549 | 7927 | 8426 | 8894 | 10473 | 13018 | 14575 | 11580 |
| 55 - 59 | 5705 | 5662 | 5654 | 5689 | 5717 | 5743 | 6002 | 6267 | 6613 | 6943 | 7302 | 9107 | 10736 | 13005 | 14494 |
| 60 - 64 | 6845 | 6811 | 6741 | 6641 | 6524 | 6451 | 6435 | 6395 | 6437 | 6438 | 6455 | 7820 | 9773 | 11212 | 13573 |
| 65 - 69 | 6924 | 7026 | 7177 | 7379 | 7491 | 7700 | 7747 | 7728 | 7675 | 7643 | 7596 | 7294 | 8847 | 10784 | 12303 |
| 70 - 74 | 5115 | 5478 | 5848 | 6199 | 6560 | 6925 | 7127 | 7293 | 7499 | 7694 | 7897 | 7979 | 7687 | 9094 | 11059 |
| 75 - 79 | 3348 | 3507 | 3696 | 3878 | 4060 | 4310 | 4661 | 4972 | 5282 | 5625 | 5980 | 6448 | 6536 | 6150 | 7256 |
| 80 - 84 | 2023 | 2089 | 2160 | 2249 | 2335 | 2455 | 2595 | 2749 | 2916 | 3093 | 3280 | 4167 | 4501 | 4448 | 4168 |
| 85 & up | 1589 | 1669 | 1731 | 1799 | 1875 | 1953 | 2051 | 2132 | 2217 | 2307 | 2399 | 2847 | 3417 | 3724 | 3955 |
| Totals | 113863 | 116489 | 119284 | 122087 | 124753 | 127679 | 131077 | 133659 | 136706 | 139800 | 143009 | 153459 | 163817 | 170313 | 176744 |