| Area | Census 2000 | 7/1/2008 | Absolute Change | Relative Change |
| Idaho | 1,293,953 | 1,523,816 | 229,863 | 17.76% |
|---|---|---|---|---|
| Aberdeen city | 1,840 | 1,749 | -91 | -4.95% |
| Acequia city | 144 | 132 | -12 | -8.33% |
| Albion city | 262 | 255 | -7 | -2.67% |
| American Falls city | 4,111 | 4,069 | -42 | -1.02% |
| Ammon city | 6,187 | 13,646 | 7,459 | 120.56% |
| Arco city | 1,026 | 977 | -49 | -4.78% |
| Arimo city | 348 | 320 | -28 | -8.05% |
| Ashton city | 1,129 | 1,073 | -56 | -4.96% |
| Athol city | 676 | 684 | 8 | 1.18% |
| Atomic City city | 25 | 25 | 0 | 0.00% |
| Bancroft city | 382 | 344 | -38 | -9.95% |
| Basalt city | 419 | 419 | 0 | 0.00% |
| Bellevue city | 1,876 | 2,165 | 289 | 15.41% |
| Blackfoot city | 10,419 | 11,012 | 593 | 5.69% |
| Bliss city | 275 | 247 | -28 | -10.18% |
| Bloomington city | 251 | 225 | -26 | -10.36% |
| Boise City city | 185,787 | 205,314 | 19,527 | 10.51% |
| Bonners Ferry city | 2,515 | 2,596 | 81 | 3.22% |
| Bovill city | 305 | 287 | -18 | -5.90% |
| Buhl city | 3,985 | 4,077 | 92 | 2.31% |
| Burley city | 9,316 | 9,105 | -211 | -2.26% |
| Butte City city | 76 | 72 | -4 | -5.26% |
| Caldwell city | 25,967 | 42,331 | 16,364 | 63.02% |
| Cambridge city | 360 | 380 | 20 | 5.56% |
| Carey city | 513 | 511 | -2 | -0.39% |
| Cascade city | 997 | 991 | -6 | -0.60% |
| Castleford city | 277 | 271 | -6 | -2.17% |
| Challis city | 909 | 896 | -13 | -1.43% |
| Chubbuck city | 9,700 | 11,828 | 2,128 | 21.94% |
| Clark Fork city | 530 | 578 | 48 | 9.06% |
| Clayton city | 27 | 27 | 0 | 0.00% |
| Clifton city | 213 | 238 | 25 | 11.74% |
| Coeur d'Alene city | 34,514 | 43,360 | 8,846 | 25.63% |
| Cottonwood city | 944 | 1,041 | 97 | 10.28% |
| Council city | 816 | 680 | -136 | -16.67% |
| Craigmont city | 556 | 519 | -37 | -6.65% |
| Crouch city | 154 | 161 | 7 | 4.55% |
| Culdesac city | 378 | 376 | -2 | -0.53% |
| Dalton Gardens city | 2,278 | 2,389 | 111 | 4.87% |
| Dayton city | 444 | 442 | -2 | -0.45% |
| Deary city | 552 | 541 | -11 | -1.99% |
| Declo city | 338 | 329 | -9 | -2.66% |
| Dietrich city | 150 | 160 | 10 | 6.67% |
| Donnelly city | 138 | 142 | 4 | 2.90% |
| Dover city | 342 | 527 | 185 | 54.09% |
| Downey city | 613 | 562 | -51 | -8.32% |
| Driggs city | 1,100 | 1,362 | 262 | 23.82% |
| Drummond city | 15 | 14 | -1 | -6.67% |
| Dubois city | 647 | 616 | -31 | -4.79% |
| Eagle city | 11,085 | 19,471 | 8,386 | 75.65% |
| East Hope city | 200 | 218 | 18 | 9.00% |
| Eden city | 411 | 405 | -6 | -1.46% |
| Elk River city | 156 | 136 | -20 | -12.82% |
| Emmett city | 5,490 | 6,357 | 867 | 15.79% |
| Fairfield city | 395 | 417 | 22 | 5.57% |
| Ferdinand city | 145 | 145 | 0 | 0.00% |
| Fernan Lake Village city | 186 | 183 | -3 | -1.61% |
| Filer city | 1,620 | 2,141 | 521 | 32.16% |
| Firth city | 408 | 486 | 78 | 19.12% |
| Franklin city | 641 | 665 | 24 | 3.74% |
| Fruitland city | 3,805 | 4,732 | 927 | 24.36% |
| Garden City city | 10,624 | 11,713 | 1,089 | 10.25% |
| Genesee city | 946 | 878 | -68 | -7.19% |
| Georgetown city | 538 | 463 | -75 | -13.94% |
| Glenns Ferry city | 1,611 | 1,388 | -223 | -13.84% |
| Gooding city | 3,384 | 3,200 | -184 | -5.44% |
| Grace city | 990 | 939 | -51 | -5.15% |
| Grand View city | 470 | 462 | -8 | -1.70% |
| Grangeville city | 3,228 | 3,110 | -118 | -3.66% |
| Greenleaf city | 862 | 893 | 31 | 3.60% |
| Hagerman city | 656 | 791 | 135 | 20.58% |
| Hailey city | 6,200 | 7,883 | 1,683 | 27.15% |
| Hamer city | 12 | 12 | 0 | 0.00% |
| Hansen city | 970 | 1,022 | 52 | 5.36% |
| Harrison city | 267 | 284 | 17 | 6.37% |
| Hauser city | 668 | 791 | 123 | 18.41% |
| Hayden city | 9,159 | 12,873 | 3,714 | 40.55% |
| Hayden Lake city | 494 | 560 | 66 | 13.36% |
| Hazelton city | 687 | 742 | 55 | 8.01% |
| Heyburn city | 2,899 | 2,696 | -203 | -7.00% |
| Hollister city | 237 | 233 | -4 | -1.69% |
| Homedale city | 2,528 | 2,471 | -57 | -2.25% |
| Hope city | 79 | 86 | 7 | 8.86% |
| Horseshoe Bend city | 770 | 854 | 84 | 10.91% |
| Huetter city | 96 | 97 | 1 | 1.04% |
| Idaho City city | 458 | 476 | 18 | 3.93% |
| Idaho Falls city | 50,730 | 54,334 | 3,604 | 7.10% |
| Inkom city | 738 | 725 | -13 | -1.76% |
| Iona city | 1,201 | 1,331 | 130 | 10.82% |
| Irwin city | 157 | 165 | 8 | 5.10% |
| Island Park city | 215 | 287 | 72 | 33.49% |
| Jerome city | 7,780 | 9,157 | 1,377 | 17.70% |
| Juliaetta city | 609 | 577 | -32 | -5.25% |
| Kamiah city | 1,160 | 1,088 | -72 | -6.21% |
| Kellogg city | 2,395 | 2,228 | -167 | -6.97% |
| Kendrick city | 369 | 347 | -22 | -5.96% |
| Ketchum city | 3,003 | 3,272 | 269 | 8.96% |
| Kimberly city | 2,614 | 3,148 | 534 | 20.43% |
| Kooskia city | 675 | 655 | -20 | -2.96% |
| Kootenai city | 441 | 498 | 57 | 12.93% |
| Kuna city | 5,382 | 13,354 | 7,972 | 148.12% |
| Lapwai city | 1,134 | 1,120 | -14 | -1.23% |
| Lava Hot Springs city | 521 | 492 | -29 | -5.57% |
| Leadore city | 90 | 86 | -4 | -4.44% |
| Lewiston city | 30,904 | 31,764 | 860 | 2.78% |
| Lewisville city | 467 | 525 | 58 | 12.42% |
| Mackay city | 566 | 548 | -18 | -3.18% |
| Malad City city | 2,158 | 2,084 | -74 | -3.43% |
| Malta city | 177 | 173 | -4 | -2.26% |
| Marsing city | 890 | 945 | 55 | 6.18% |
| McCall city | 2,084 | 2,593 | 509 | 24.42% |
| McCammon city | 805 | 821 | 16 | 1.99% |
| Melba city | 439 | 560 | 121 | 27.56% |
| Menan city | 707 | 716 | 9 | 1.27% |
| Meridian city | 34,919 | 66,916 | 31,997 | 91.63% |
| Middleton city | 2,978 | 5,594 | 2,616 | 87.84% |
| Midvale city | 176 | 209 | 33 | 18.75% |
| Minidoka city | 129 | 118 | -11 | -8.53% |
| Montpelier city | 2,785 | 2,356 | -429 | -15.40% |
| Moore city | 196 | 185 | -11 | -5.61% |
| Moscow city | 21,291 | 22,798 | 1,507 | 7.08% |
| Mountain Home city | 11,143 | 12,382 | 1,239 | 11.12% |
| Moyie Springs city | 656 | 727 | 71 | 10.82% |
| Mud Lake city | 270 | 286 | 16 | 5.93% |
| Mullan city | 840 | 748 | -92 | -10.95% |
| Murtaugh city | 139 | 149 | 10 | 7.19% |
| Nampa city | 51,867 | 80,362 | 28,495 | 54.94% |
| New Meadows city | 533 | 491 | -42 | -7.88% |
| New Plymouth city | 1,400 | 1,448 | 48 | 3.43% |
| Newdale city | 358 | 349 | -9 | -2.51% |
| Nezperce city | 523 | 486 | -37 | -7.07% |
| Notus city | 458 | 623 | 165 | 36.03% |
| Oakley city | 668 | 707 | 39 | 5.84% |
| Oldtown city | 190 | 207 | 17 | 8.95% |
| Onaway city | 230 | 217 | -13 | -5.65% |
| Orofino city | 3,247 | 3,045 | -202 | -6.22% |
| Osburn city | 1,545 | 1,389 | -156 | -10.10% |
| Oxford city | 53 | 52 | -1 | -1.89% |
| Paris city | 576 | 483 | -93 | -16.15% |
| Parker city | 319 | 315 | -4 | -1.25% |
| Parma city | 1,771 | 1,870 | 99 | 5.59% |
| Paul city | 998 | 919 | -79 | -7.92% |
| Payette city | 7,054 | 7,637 | 583 | 8.26% |
| Peck city | 186 | 184 | -2 | -1.08% |
| Pierce city | 617 | 527 | -90 | -14.59% |
| Pinehurst city | 1,661 | 1,589 | -72 | -4.33% |
| Placerville city | 60 | 57 | -3 | -5.00% |
| Plummer city | 990 | 997 | 7 | 0.71% |
| Pocatello city | 51,466 | 54,901 | 3,435 | 6.67% |
| Ponderay city | 638 | 696 | 58 | 9.09% |
| Post Falls city | 17,247 | 26,460 | 9,213 | 53.42% |
| Potlatch city | 791 | 742 | -49 | -6.19% |
| Preston city | 4,682 | 5,059 | 377 | 8.05% |
| Priest River city | 1,754 | 1,913 | 159 | 9.06% |
| Rathdrum city | 4,816 | 6,821 | 2,005 | 41.63% |
| Reubens city | 72 | 69 | -3 | -4.17% |
| Rexburg city | 17,257 | 28,028 | 10,771 | 62.42% |
| Richfield city | 412 | 414 | 2 | 0.49% |
| Rigby city | 2,998 | 3,394 | 396 | 13.21% |
| Riggins city | 410 | 418 | 8 | 1.95% |
| Ririe city | 545 | 534 | -11 | -2.02% |
| Roberts city | 647 | 642 | -5 | -0.77% |
| Rockland city | 316 | 313 | -3 | -0.95% |
| Rupert city | 5,645 | 5,082 | -563 | -9.97% |
| Salmon city | 3,122 | 2,986 | -136 | -4.36% |
| Sandpoint city | 6,835 | 8,337 | 1,502 | 21.98% |
| Shelley city | 3,813 | 4,257 | 444 | 11.64% |
| Shoshone city | 1,398 | 1,564 | 166 | 11.87% |
| Smelterville city | 651 | 598 | -53 | -8.14% |
| Soda Springs city | 3,381 | 3,072 | -309 | -9.14% |
| Spencer city | 38 | 33 | -5 | -13.16% |
| Spirit Lake city | 1,376 | 1,730 | 354 | 25.73% |
| St. Anthony city | 3,342 | 3,401 | 59 | 1.77% |
| St. Charles city | 156 | 128 | -28 | -17.95% |
| St. Maries city | 2,652 | 2,644 | -8 | -0.30% |
| Stanley city | 100 | 106 | 6 | 6.00% |
| Star city | 1,795 | 5,065 | 3,270 | 182.17% |
| State Line city | 28 | 60 | 32 | 114.29% |
| Stites city | 226 | 225 | -1 | -0.44% |
| Sugar City city | 1,242 | 1,540 | 298 | 23.99% |
| Sun Valley city | 1,427 | 1,466 | 39 | 2.73% |
| Swan Valley city | 213 | 244 | 31 | 14.55% |
| Tensed city | 126 | 125 | -1 | -0.79% |
| Teton city | 569 | 661 | 92 | 16.17% |
| Tetonia city | 247 | 229 | -18 | -7.29% |
| Troy city | 798 | 777 | -21 | -2.63% |
| Twin Falls city | 34,469 | 42,197 | 7,728 | 22.42% |
| Ucon city | 943 | 1,082 | 139 | 14.74% |
| Victor city | 840 | 1,817 | 977 | 116.31% |
| Wallace city | 960 | 861 | -99 | -10.31% |
| Wardner city | 215 | 197 | -18 | -8.37% |
| Warm River city | 10 | 10 | 0 | 0.00% |
| Weippe city | 416 | 370 | -46 | -11.06% |
| Weiser city | 5,343 | 5,290 | -53 | -0.99% |
| Wendell city | 2,338 | 2,418 | 80 | 3.42% |
| Weston city | 425 | 437 | 12 | 2.82% |
| White Bird city | 106 | 105 | -1 | -0.94% |
| Wilder city | 1,462 | 1,473 | 11 | 0.75% |
| Winchester city | 308 | 291 | -17 | -5.52% |
| Worley city | 223 | 219 | -4 | -1.79% |
Source: Population Division, U.S. Census Bureau