| Rank | City | 2000 Population |
|---|---|---|
| 1 | Victor | 1,024 |
| 2 | Paul | 1,007 |
| 3 | Ucon | 946 |
| 4 | Marsing | 897 |
| 5 | Troy | 816 |
| 6 | Hagerman | 776 |
| 7 | Hauser | 757 |
| 8 | Dubois | 707 |
| 9 | Ponderay | 663 |
| 10 | Kooskia | 668 |
| 11 | Smelterville | 649 |
| 12 | Pierce | 612 |
| 13 | Paris | 576 |
| 14 | Mackay | 566 |
| 15 | Deary | 562 |
| 16 | Craigmont | 555 |
| 17 | Georgetown | 539 |
| 18 | Nezperce | 522 |
| 19 | Lava Hot Springs | 521 |
| 20 | Carey | 513 |
| 21 | Lewisville | 468 |
| 22 | Notus | 461 |
| 23 | Melba | 455 |
| 24 | Riggins | 430 |
| 25 | Basalt | 419 |
| 26 | Cambridge | 371 |
| 27 | Kendrick | 366 |
| 28 | Newdale | 357 |
| 29 | Castleford | 277 |
| 30 | Mud Lake | 270 |
| 31 | Harrison | 270 |
| 32 | Hollister | 245 |
| 33 | Midvale | 214 |
| 34 | Fernan Lake Village | 187 |
| 35 | Dietrich | 150 |
| 36 | Murtaugh | 139 |
| 37 | Minidoka | 128 |
| 38 | Eagle | 12,451 |
| 39 | Jerome | 8,129 |
| 40 | Sandpoint | 6,871 |
| 41 | Ammon | 6,529 |
| 42 | Kuna | 6,436 |
| 43 | Hailey | 6,323 |
| 44 | American Falls | 4,101 |
| 45 | Soda Springs | 3,377 |
| 46 | Nampa | 54,770 |
| 47 | Salmon | 3,226 |
| 48 | Ketchum | 3,011 |
| 49 | Pocatello | 51,552 |
| 50 | Heyburn | 2,906 |
| 51 | Idaho Falls | 51,110 |
| 52 | Kimberly | 2,646 |
| 53 | Kellogg | 2,415 |
| 54 | McCall | 2,092 |
| 55 | Aberdeen | 1,837 |
| 56 | Wallace | 956 |
| 57 | Greenleaf | 864 |
| 58 | Horseshoe Bend | 849 |
| 59 | Mullan | 834 |
| 60 | McCammon | 819 |
| 61 | Star | 1,930 |
| 62 | Council | 817 |
| 63 | Priest River | 1,809 |
| 64 | Filer | 1,783 |
| 65 | Potlatch | 784 |
| 66 | Glenns Ferry | 1,601 |
| 67 | Inkom | 746 |
| 68 | Oakley | 722 |
| 69 | Menan | 707 |
| 70 | Spirit Lake | 1,401 |
| 71 | Hazelton | 692 |
| 72 | Athol | 678 |
| 73 | State Line | 60 |
| 74 | Placerville | 60 |
| 75 | Teton | 666 |
| 76 | Moyie Springs | 660 |
| 77 | Oxford | 53 |
| 78 | Twin Falls | 34,949 |
| 79 | Iona | 1,228 |
| 80 | Spencer | 38 |
| 81 | Clayton | 27 |
| 82 | Atomic City | 25 |
| 83 | Drummond | 15 |
| 84 | Hamer | 12 |
| 85 | Warm River | 10 |
| 86 | Roberts | 651 |
| 87 | Franklin | 641 |
| 88 | Juliaetta | 613 |
| 89 | Downey | 612 |
| 90 | Ririe | 575 |
| 91 | Hayden Lake | 511 |
| 92 | Kootenai | 478 |
| 93 | Dover | 462 |
| 94 | Clark Fork | 532 |
| 95 | New Meadows | 528 |
| 96 | Firth | 488 |
| 97 | Grand View | 472 |
| 98 | Idaho City | 465 |
| 99 | Dayton | 443 |
| 100 | Weston | 426 |
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