| Population Projection Series | |||||||||||||||
| June 29, 2000 | |||||||||||||||
| New Castle County | |||||||||||||||
| White Population | |||||||||||||||
| [As of July 1] | |||||||||||||||
| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2005 | 2010 | 2015 | 2020 | |
| 0 - 4 | 25269 | 25517 | 25662 | 25589 | 25524 | 25155 | 24850 | 24699 | 24573 | 24408 | 24267 | 22665 | 21165 | 20736 | 21073 |
| 5 - 9 | 23242 | 23616 | 23914 | 24159 | 24601 | 24862 | 24978 | 25090 | 25030 | 25027 | 24998 | 23584 | 22034 | 20506 | 20143 |
| 10 - 14 | 21160 | 21795 | 22376 | 22836 | 23307 | 23501 | 23763 | 24049 | 24335 | 24598 | 24879 | 25271 | 23817 | 22102 | 20546 |
| 15 - 19 | 24426 | 23262 | 22605 | 22324 | 22236 | 22152 | 22720 | 23312 | 23829 | 24386 | 24938 | 25368 | 25753 | 24147 | 22379 |
| 20 - 24 | 31109 | 31004 | 30486 | 29561 | 28477 | 27463 | 26234 | 25597 | 25348 | 24892 | 24554 | 27848 | 28219 | 28558 | 26820 |
| 25 - 29 | 32714 | 32828 | 32722 | 32649 | 32703 | 33041 | 32812 | 32198 | 31258 | 30477 | 29654 | 26986 | 30632 | 30777 | 31235 |
| 30 - 34 | 33561 | 33911 | 34020 | 33998 | 33930 | 33876 | 33868 | 33686 | 33553 | 33365 | 33215 | 30174 | 27228 | 30660 | 30926 |
| 35 - 39 | 29090 | 30359 | 31661 | 32981 | 34207 | 35469 | 35698 | 35719 | 35595 | 35502 | 35397 | 35332 | 32031 | 28700 | 32320 |
| 40 - 44 | 26067 | 27158 | 27490 | 28188 | 28980 | 29942 | 31098 | 32335 | 33543 | 34798 | 36102 | 36036 | 36107 | 32522 | 29038 |
| 45 - 49 | 20893 | 21566 | 22964 | 23885 | 24860 | 25950 | 26921 | 27163 | 27731 | 28120 | 28616 | 35941 | 35798 | 35787 | 32225 |
| 50 - 54 | 16784 | 17408 | 18118 | 19010 | 19749 | 20517 | 21101 | 22412 | 23223 | 24336 | 25362 | 27776 | 34863 | 34509 | 34638 |
| 55 - 59 | 16284 | 16004 | 15755 | 15651 | 15545 | 15460 | 15953 | 16566 | 17302 | 17999 | 18762 | 22941 | 25059 | 31333 | 30946 |
| 60 - 64 | 16489 | 16274 | 15939 | 15543 | 15145 | 14873 | 14543 | 14290 | 14152 | 13946 | 13779 | 16626 | 20282 | 22030 | 27620 |
| 65 - 69 | 15580 | 15390 | 15253 | 15181 | 14966 | 14810 | 14587 | 14263 | 13902 | 13554 | 13214 | 11779 | 14167 | 17213 | 18624 |
| 70 - 74 | 11829 | 12341 | 12797 | 13150 | 13527 | 13758 | 13593 | 13391 | 13258 | 13083 | 12936 | 11743 | 10450 | 12536 | 15235 |
| 75 - 79 | 8290 | 8550 | 8867 | 9111 | 9378 | 9715 | 10092 | 10409 | 10673 | 10964 | 11254 | 10169 | 9246 | 8271 | 9922 |
| 80 - 84 | 5137 | 5269 | 5417 | 5571 | 5734 | 5929 | 6100 | 6320 | 6521 | 6736 | 6958 | 8138 | 7335 | 6647 | 5931 |
| 85 & up | 3907 | 4053 | 4150 | 4253 | 4394 | 4503 | 4642 | 4751 | 4871 | 4983 | 5104 | 5497 | 6305 | 6079 | 5684 |
| Totals | 361831 | 366305 | 370196 | 373640 | 377263 | 380976 | 383553 | 386250 | 388697 | 391174 | 393989 | 403874 | 410491 | 413113 | 415305 |