| Rank | City | 2006 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Des Moines | 194,362 | -0.5% |
| 2 | Cedar Rapids | 123,965 | 0.3% |
| 3 | Davenport | 98,282 | 0.0% |
| 4 | Sioux City | 82,039 | -0.7% |
| 5 | Waterloo | 66,514 | -0.7% |
| 6 | Iowa City | 65,641 | 0.9% |
| 7 | Council Bluffs | 59,453 | 0.4% |
| 8 | Dubuque | 57,252 | -0.2% |
| 9 | West Des Moines | 52,792 | 2.3% |
| 10 | Ames | 52,415 | 0.6% |
| 11 | Cedar Falls | 36,477 | 0.2% |
| 12 | Ankeny | 36,039 | 5.5% |
| 13 | Urbandale | 35,722 | 3.9% |
| 14 | Bettendorf | 31,714 | 0.3% |
| 15 | Marion | 30,410 | 2.7% |
| 16 | Mason City | 27,771 | -1.0% |
| 17 | Clinton | 26,829 | -0.6% |
| 18 | Marshalltown | 25,679 | -0.3% |
| 19 | Fort Dodge | 25,211 | -0.8% |
| 20 | Burlington | 25,192 | -1.2% |
| 21 | Ottumwa | 24,656 | -0.2% |
| 22 | Muscatine | 22,290 | -0.4% |
| 23 | Coralville | 17,788 | 3.2% |
| 24 | Newton | 15,328 | -0.4% |
| 25 | Indianola | 14,045 | 1.3% |
| 26 | Clive | 13,961 | 1.4% |
| 27 | Johnston | 13,632 | 8.7% |
| 28 | Altoona | 12,936 | 4.4% |
| 29 | Boone | 12,684 | -0.2% |
| 30 | Fort Madison | 11,039 | -1.0% |
| 31 | Spencer | 11,030 | -0.5% |
| 32 | Oskaloosa | 10,964 | -0.0% |
| 33 | Keokuk | 10,616 | -1.4% |
| 34 | Pella | 10,027 | 0.2% |
| 35 | Carroll | 9,971 | -0.2% |
| 36 | Storm Lake | 9,722 | -0.7% |
| 37 | Fairfield | 9,214 | -0.8% |
| 38 | Le Mars | 9,195 | -0.1% |
| 39 | Grinnell | 9,193 | 0.2% |
| 40 | Waverly | 9,190 | 0.5% |
| 41 | Waukee | 9,186 | 10.5% |
| 42 | Perry | 9,043 | 3.3% |
| 43 | North Liberty | 8,806 | 9.9% |
| 44 | Mount Pleasant | 8,782 | 0.1% |
| 45 | Decorah | 7,965 | -0.5% |
| 46 | Webster City | 7,932 | -0.6% |
| 47 | Norwalk | 7,898 | 2.3% |
| 48 | Clear Lake | 7,871 | -0.8% |
| 49 | Charles City | 7,540 | -0.7% |
| 50 | Knoxville | 7,379 | -1.0% |
| 51 | Creston | 7,344 | -0.6% |
| 52 | Denison | 7,242 | -0.3% |
| 53 | Washington | 7,066 | 0.0% |
| 54 | Atlantic | 6,800 | -1.3% |
| 55 | Hiawatha | 6,628 | 0.3% |
| 56 | Grimes | 6,536 | 5.0% |
| 57 | Nevada | 6,528 | -0.5% |
| 58 | Sioux Center | 6,486 | 1.3% |
| 59 | Pleasant Hill | 6,334 | 3.8% |
| 60 | Estherville | 6,313 | -0.9% |
| 61 | Oelwein | 6,295 | -1.2% |
| 62 | Independence | 6,005 | -0.2% |
| 63 | Maquoketa | 5,993 | -0.5% |
| 64 | Red Oak | 5,847 | -1.2% |
| 65 | Orange City | 5,777 | 0.5% |
| 66 | Centerville | 5,644 | -0.9% |
| 67 | Anamosa | 5,624 | 0.4% |
| 68 | Glenwood | 5,516 | 0.4% |
| 69 | Clarinda | 5,499 | -0.6% |
| 70 | Algona | 5,446 | -1.0% |
| 71 | De Witt | 5,214 | 0.7% |
| 72 | Vinton | 5,191 | 0.3% |
| 73 | Shenandoah | 5,118 | -1.5% |
| 74 | Harlan | 5,087 | -0.8% |
| 75 | Iowa Falls | 5,031 | -0.6% |
| 76 | Manchester | 4,946 | -1.3% |
| 77 | Cherokee | 4,934 | -1.6% |
| 78 | Evansdale | 4,924 | 1.7% |
| 79 | Sheldon | 4,907 | -0.4% |
| 80 | Winterset | 4,794 | 0.1% |
| 81 | Osceola | 4,741 | -0.1% |
| 82 | Windsor Heights | 4,595 | -0.8% |
| 83 | Chariton | 4,563 | -0.1% |
| 84 | Spirit Lake | 4,527 | 1.2% |
| 85 | Eldridge | 4,459 | 1.1% |
| 86 | Jefferson | 4,351 | -1.2% |
| 87 | Humboldt | 4,301 | -0.7% |
| 88 | Camanche | 4,224 | 0.1% |
| 89 | Hampton | 4,203 | -0.0% |
| 90 | Forest City | 4,199 | -0.9% |
| 91 | Adel | 4,125 | 3.6% |
| 92 | Dyersville | 4,121 | 0.3% |
| 93 | Mount Vernon | 4,110 | 1.5% |
| 94 | Waukon | 3,938 | -0.9% |
| 95 | Sergeant Bluff | 3,753 | 2.4% |
| 96 | Cresco | 3,742 | -0.8% |
| 97 | Emmetsburg | 3,667 | -1.2% |
| 98 | Monticello | 3,663 | 0.1% |
| 99 | Albia | 3,625 | -0.7% |
| 100 | Carlisle | 3,564 | -0.1% |
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