| City | Rank | Annual Change ↓ | 2026 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Ponderay | 1 | 8.5% | 2,196 | 1,303 |
| Star | 2 | 8.01% | 22,547 | 11,488 |
| Paul | 3 | 7.61% | 1,853 | 1,198 |
| Rathdrum | 4 | 6.28% | 14,058 | 9,289 |
| Sugar City | 5 | 6.26% | 2,631 | 1,736 |
| Middleton | 6 | 4.33% | 13,145 | 9,573 |
| Caldwell | 7 | 4.07% | 79,746 | 60,708 |
| Kimberly | 8 | 4.02% | 6,031 | 4,648 |
| Sandpoint | 9 | 3.86% | 11,056 | 8,726 |
| Kuna | 10 | 3.62% | 32,665 | 24,526 |
| Meridian | 11 | 3.51% | 148,009 | 119,506 |
| Post Falls | 12 | 3.47% | 48,338 | 39,320 |
| Driggs | 13 | 3.41% | 2,485 | 2,039 |
| Fruitland | 14 | 3.4% | 7,458 | 6,115 |
| Nampa | 15 | 3.36% | 124,426 | 101,406 |
| Victor | 16 | 2.9% | 2,664 | 2,171 |
| Iona | 17 | 2.89% | 3,271 | 2,751 |
| Ammon | 18 | 2.79% | 20,681 | 17,877 |
| Rigby | 19 | 2.64% | 5,909 | 5,069 |
| Emmett | 20 | 2.56% | 9,128 | 7,734 |
| McCall | 21 | 2.42% | 4,233 | 3,717 |
| Hailey | 22 | 2.35% | 10,289 | 9,199 |
| Franklin | 23 | 2.34% | 1,182 | 1,029 |
| Plummer | 24 | 2.3% | 1,156 | 1,015 |
| St. Anthony | 25 | 2.28% | 4,081 | 3,691 |
| Jerome | 26 | 2.23% | 14,037 | 12,366 |
| Preston | 27 | 2.17% | 6,311 | 5,551 |
| Priest River | 28 | 2.16% | 1,891 | 1,671 |
| Filer | 29 | 2.08% | 3,089 | 2,784 |
| Shelley | 30 | 2.06% | 5,412 | 4,840 |
| Grangeville | 31 | 1.96% | 3,692 | 3,325 |
| Wilder | 32 | 1.9% | 1,767 | 1,596 |
| Homedale | 33 | 1.88% | 3,197 | 2,917 |
| Bonners Ferry | 34 | 1.86% | 2,849 | 2,534 |
| Hayden | 35 | 1.84% | 17,682 | 15,653 |
| Weiser | 36 | 1.7% | 6,355 | 5,655 |
| Shoshone | 37 | 1.64% | 1,796 | 1,658 |
| Payette | 38 | 1.58% | 8,952 | 8,197 |
| Blackfoot | 39 | 1.53% | 13,566 | 12,404 |
| Twin Falls | 40 | 1.53% | 57,077 | 52,112 |
| New Plymouth | 41 | 1.41% | 1,652 | 1,516 |
| American Falls | 42 | 1.4% | 4,852 | 4,567 |
| Chubbuck | 43 | 1.34% | 17,049 | 15,677 |
| Eagle | 44 | 1.31% | 35,112 | 31,630 |
| Pinehurst | 45 | 1.29% | 1,803 | 1,676 |
| Genesee | 46 | 1.28% | 1,108 | 1,032 |
| Idaho Falls | 47 | 1.27% | 72,700 | 65,908 |
| Salmon | 48 | 1.25% | 3,327 | 3,097 |
| Spirit Lake | 49 | 1.25% | 2,516 | 2,348 |
| Aberdeen | 50 | 1.24% | 1,875 | 1,759 |
| Garden City | 51 | 1.2% | 13,203 | 12,292 |
| Kellogg | 52 | 1.18% | 2,485 | 2,318 |
| St. Maries | 53 | 1.14% | 2,485 | 2,369 |
| Parma | 54 | 1.13% | 2,228 | 2,094 |
| Wendell | 55 | 1.13% | 3,125 | 2,923 |
| Burley | 56 | 1.12% | 12,548 | 11,757 |
| Rupert | 57 | 1.1% | 6,531 | 6,061 |
| Ucon | 58 | 1.09% | 1,209 | 1,169 |
| Mountain Home | 59 | 1.08% | 16,961 | 16,051 |
| Osburn | 60 | 1.08% | 1,691 | 1,598 |
| Moscow | 61 | 1.04% | 27,000 | 25,528 |
| Coeur d'Alene | 62 | 1.04% | 58,785 | 54,951 |
| Buhl | 63 | 1% | 4,849 | 4,566 |
| Gooding | 64 | 0.96% | 3,892 | 3,713 |
| Ketchum | 65 | 0.8% | 3,672 | 3,553 |
| Kamiah | 66 | 0.79% | 1,143 | 1,117 |
| Pocatello | 67 | 0.74% | 59,205 | 56,863 |
| Lapwai | 68 | 0.72% | 1,260 | 1,212 |
| Bellevue | 69 | 0.62% | 2,613 | 2,569 |
| Cascade | 70 | 0.59% | 1,024 | 1,003 |
| Heyburn | 71 | 0.56% | 3,804 | 3,669 |
| Malad City | 72 | 0.51% | 2,350 | 2,296 |
| Hansen | 73 | 0.45% | 1,114 | 1,092 |
| Orofino | 74 | 0.4% | 3,272 | 3,230 |
| Soda Springs | 75 | 0.35% | 3,176 | 3,114 |
| Lewiston | 76 | 0.34% | 34,836 | 34,252 |
| Marsing | 77 | 0.33% | 1,234 | 1,229 |
| Rexburg | 78 | 0.32% | 40,465 | 39,803 |
| Montpelier | 79 | 0.26% | 2,717 | 2,642 |
| Boise City | 80 | 0.18% | 238,853 | 236,033 |
| Sun Valley | 81 | 0.17% | 1,779 | 1,787 |
| Glenns Ferry | 82 | -0.16% | 1,254 | 1,280 |
| Dalton Gardens | 83 | -0.44% | 2,485 | 2,538 |
Idaho's cities with over 1,000 residents show varied growth patterns from 2020 to 2025. Ponderay leads with 8.5% annualized growth, followed by Star (8.01%) and Paul (7.61%). The largest population centers are Boise City (238,853), Meridian (148,009), and Nampa (124,426). Of the 83 cities over 1,000 population, 81 are growing while 2 experienced population decline. Overall, cities averaged 1.97% annualized growth, with total urban population growing by 13.22% annually.