| Rank | City | 2005 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Des Moines | 193,574 | -0.8% |
| 2 | Cedar Rapids | 122,932 | 0.2% |
| 3 | Davenport | 97,880 | -0.1% |
| 4 | Sioux City | 83,116 | -0.5% |
| 5 | Waterloo | 66,880 | -0.7% |
| 6 | Iowa City | 65,436 | 1.0% |
| 7 | Council Bluffs | 59,062 | 0.3% |
| 8 | Dubuque | 57,302 | -0.2% |
| 9 | Ames | 52,477 | 0.8% |
| 10 | West Des Moines | 51,942 | 2.4% |
| 11 | Cedar Falls | 36,234 | 0.0% |
| 12 | Ankeny | 34,555 | 5.8% |
| 13 | Urbandale | 34,528 | 4.0% |
| 14 | Bettendorf | 31,449 | 0.1% |
| 15 | Marion | 29,975 | 3.1% |
| 16 | Mason City | 27,999 | -1.0% |
| 17 | Clinton | 26,990 | -0.6% |
| 18 | Marshalltown | 25,853 | -0.2% |
| 19 | Fort Dodge | 25,495 | -0.8% |
| 20 | Burlington | 25,411 | -1.3% |
| 21 | Ottumwa | 24,554 | -0.4% |
| 22 | Muscatine | 22,311 | -0.4% |
| 23 | Coralville | 17,570 | 3.7% |
| 24 | Newton | 15,514 | -0.1% |
| 25 | Indianola | 13,732 | 1.0% |
| 26 | Clive | 13,587 | 1.1% |
| 27 | Boone | 12,732 | -0.2% |
| 28 | Johnston | 12,411 | 8.4% |
| 29 | Altoona | 12,038 | 3.6% |
| 30 | Fort Madison | 11,184 | -1.0% |
| 31 | Spencer | 11,092 | -0.5% |
| 32 | Oskaloosa | 10,878 | -0.2% |
| 33 | Keokuk | 10,686 | -1.6% |
| 34 | Pella | 10,056 | 0.3% |
| 35 | Carroll | 9,929 | -0.3% |
| 36 | Storm Lake | 9,820 | -0.6% |
| 37 | Fairfield | 9,302 | -0.8% |
| 38 | Le Mars | 9,227 | -0.0% |
| 39 | Grinnell | 9,204 | 0.3% |
| 40 | Waverly | 9,129 | 0.4% |
| 41 | Perry | 8,723 | 3.2% |
| 42 | Mount Pleasant | 8,708 | -0.1% |
| 43 | Waukee | 8,454 | 10.9% |
| 44 | Decorah | 7,987 | -0.6% |
| 45 | Webster City | 7,974 | -0.6% |
| 46 | Clear Lake | 7,926 | -0.8% |
| 47 | Norwalk | 7,705 | 2.2% |
| 48 | North Liberty | 7,637 | 8.6% |
| 49 | Charles City | 7,584 | -0.7% |
| 50 | Knoxville | 7,424 | -1.0% |
| 51 | Creston | 7,331 | -0.8% |
| 52 | Denison | 7,275 | -0.2% |
| 53 | Washington | 7,080 | 0.1% |
| 54 | Atlantic | 6,900 | -1.2% |
| 55 | Nevada | 6,630 | -0.2% |
| 56 | Hiawatha | 6,594 | 0.3% |
| 57 | Sioux Center | 6,416 | 1.4% |
| 58 | Estherville | 6,334 | -1.1% |
| 59 | Oelwein | 6,323 | -1.4% |
| 60 | Pleasant Hill | 6,059 | 3.6% |
| 61 | Maquoketa | 6,026 | -0.5% |
| 62 | Independence | 5,989 | -0.3% |
| 63 | Red Oak | 5,846 | -1.5% |
| 64 | Grimes | 5,815 | 3.2% |
| 65 | Orange City | 5,749 | 0.5% |
| 66 | Centerville | 5,688 | -0.9% |
| 67 | Anamosa | 5,598 | 0.4% |
| 68 | Algona | 5,498 | -1.0% |
| 69 | Glenwood | 5,461 | 0.3% |
| 70 | Clarinda | 5,450 | -1.0% |
| 71 | Vinton | 5,229 | 0.6% |
| 72 | Harlan | 5,180 | -0.5% |
| 73 | De Witt | 5,173 | 0.6% |
| 74 | Shenandoah | 5,155 | -1.7% |
| 75 | Iowa Falls | 5,056 | -0.7% |
| 76 | Cherokee | 5,022 | -1.6% |
| 77 | Manchester | 5,015 | -1.3% |
| 78 | Sheldon | 4,944 | -0.4% |
| 79 | Osceola | 4,798 | 0.2% |
| 80 | Winterset | 4,794 | 0.2% |
| 81 | Windsor Heights | 4,597 | -0.9% |
| 82 | Chariton | 4,594 | 0.0% |
| 83 | Eldridge | 4,586 | 2.1% |
| 84 | Evansdale | 4,530 | 0.0% |
| 85 | Jefferson | 4,430 | -1.0% |
| 86 | Spirit Lake | 4,404 | 0.8% |
| 87 | Humboldt | 4,334 | -0.7% |
| 88 | Camanche | 4,210 | – |
| 89 | Forest City | 4,184 | -1.2% |
| 90 | Hampton | 4,180 | -0.2% |
| 91 | Dyersville | 4,076 | 0.2% |
| 92 | Mount Vernon | 4,006 | 1.2% |
| 93 | Waukon | 3,941 | -1.2% |
| 94 | Adel | 3,929 | 3.2% |
| 95 | Cresco | 3,768 | -0.9% |
| 96 | Sergeant Bluff | 3,732 | 2.8% |
| 97 | Emmetsburg | 3,708 | -1.3% |
| 98 | Monticello | 3,678 | 0.2% |
| 99 | Albia | 3,654 | -0.7% |
| 100 | Carlisle | 3,563 | -0.2% |
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