| Rank | City | 2020 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Boise City | 228,959 | 1.2% |
| 2 | Meridian | 114,161 | 4.8% |
| 3 | Nampa | 99,277 | 2.2% |
| 4 | Idaho Falls | 62,888 | 1.1% |
| 5 | Caldwell | 58,481 | 2.6% |
| 6 | Pocatello | 56,637 | 0.5% |
| 7 | Coeur d'Alene | 52,414 | 1.9% |
| 8 | Twin Falls | 50,197 | 1.4% |
| 9 | Post Falls | 36,250 | 3.1% |
| 10 | Lewiston | 32,788 | 0.3% |
| 11 | Eagle | 29,796 | 4.6% |
| 12 | Rexburg | 29,400 | 1.6% |
| 13 | Moscow | 25,702 | 0.9% |
| 14 | Kuna | 22,257 | 4.3% |
| 15 | Ammon | 17,115 | 2.4% |
| 16 | Chubbuck | 15,588 | 1.3% |
| 17 | Hayden | 15,434 | 1.7% |
| 18 | Mountain Home | 14,562 | 0.3% |
| 19 | Blackfoot | 12,034 | 0.1% |
| 20 | Jerome | 11,994 | 1.1% |
| 21 | Garden City | 11,969 | 1.0% |
| 22 | Burley | 10,582 | 0.3% |
| 23 | Star | 10,532 | 6.9% |
| 24 | Rathdrum | 9,150 | 3.3% |
| 25 | Sandpoint | 8,931 | 2.2% |
| 26 | Hailey | 8,689 | 1.0% |
| 27 | Middleton | 8,466 | 4.9% |
| 28 | Payette | 7,727 | 0.4% |
| 29 | Emmett | 7,054 | 0.8% |
| 30 | Rupert | 5,893 | 0.7% |
| 31 | Preston | 5,557 | 0.7% |
| 32 | Fruitland | 5,426 | 1.6% |
| 33 | Weiser | 5,376 | -0.3% |
| 34 | Buhl | 4,507 | 1.0% |
| 35 | Shelley | 4,466 | 0.1% |
| 36 | American Falls | 4,315 | -0.4% |
| 37 | Rigby | 4,292 | 0.9% |
| 38 | Kimberly | 4,054 | 2.4% |
| 39 | McCall | 3,597 | 2.1% |
| 40 | St. Anthony | 3,553 | 0.0% |
| 41 | Heyburn | 3,447 | 1.2% |
| 42 | Gooding | 3,446 | -0.4% |
| 43 | Grangeville | 3,237 | 0.3% |
| 44 | Salmon | 3,169 | 0.2% |
| 45 | Orofino | 3,099 | -0.2% |
| 46 | Soda Springs | 3,023 | -0.1% |
| 47 | Filer | 2,931 | 1.7% |
| 48 | Ketchum | 2,855 | 0.7% |
| 49 | Homedale | 2,720 | 0.4% |
| 50 | Wendell | 2,714 | -0.3% |
| 51 | Bonners Ferry | 2,637 | 0.4% |
| 52 | Montpelier | 2,538 | -0.3% |
| 53 | Spirit Lake | 2,533 | 3.0% |
| 54 | Victor | 2,503 | 2.9% |
| 55 | Bellevue | 2,456 | 0.8% |
| 56 | St. Maries | 2,448 | 0.2% |
| 57 | Dalton Gardens | 2,410 | 0.4% |
| 58 | Iona | 2,354 | 3.0% |
| 59 | Parma | 2,147 | 0.9% |
| 60 | Malad City | 2,137 | 0.2% |
| 61 | Kellogg | 2,136 | 0.1% |
| 62 | Aberdeen | 1,977 | -0.1% |
| 63 | Priest River | 1,893 | 0.9% |
| 64 | Wilder | 1,823 | 1.9% |
| 65 | Driggs | 1,817 | 1.0% |
| 66 | Pinehurst | 1,626 | 0.0% |
| 67 | Osburn | 1,556 | 0.0% |
| 68 | New Plymouth | 1,554 | 0.1% |
| 69 | Shoshone | 1,502 | 0.3% |
| 70 | Sun Valley | 1,486 | 0.6% |
| 71 | Sugar City | 1,452 | -0.5% |
| 72 | Paul | 1,449 | 2.4% |
| 73 | Marsing | 1,318 | 2.8% |
| 74 | Glenns Ferry | 1,303 | -0.1% |
| 75 | Hansen | 1,284 | 1.3% |
| 76 | Kamiah | 1,244 | -0.4% |
| 77 | Ucon | 1,161 | 0.5% |
| 78 | Ponderay | 1,157 | 0.2% |
| 79 | Lapwai | 1,137 | – |
| 80 | Challis | 1,091 | 0.1% |
| 81 | Ashton | 1,050 | -0.8% |
| 82 | Plummer | 1,029 | -0.2% |
| 83 | Cascade | 1,025 | 1.0% |
| 84 | Kootenai | 978 | 4.2% |
| 85 | Genesee | 965 | 0.1% |
| 86 | Cottonwood | 940 | 0.5% |
| 87 | Grace | 935 | 0.2% |
| 88 | Inkom | 902 | 0.6% |
| 89 | Troy | 895 | 0.4% |
| 90 | Council | 894 | 0.7% |
| 91 | Hagerman | 893 | 0.3% |
| 92 | Greenleaf | 886 | 0.5% |
| 93 | Arco | 880 | -1.4% |
| 94 | Dover | 874 | 5.2% |
| 95 | Franklin | 835 | 3.0% |
| 96 | McCammon | 831 | 0.3% |
| 97 | Hazelton | 821 | 1.0% |
| 98 | Potlatch | 814 | 0.1% |
| 99 | Oakley | 812 | 0.7% |
| 100 | Menan | 804 | 0.9% |
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