There are 22 cities in Clinton County, Iowa.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Population | 2020 Population | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Clinton | 1 | 24,170 | 24,444 | -0.29% | 679 | 35.6 | City |
| Maquoketa | 2 | 6,028 | 6,119 | -0.38% | 1,335 | 4.5 | City |
| DeWitt | 3 | 5,610 | 5,517 | 0.41% | 902 | 6.2 | City |
| Camanche | 4 | 4,545 | 4,571 | -0.15% | 512 | 8.9 | City |
| Preston | 5 | 935 | 947 | -0.32% | 1,086 | 0.9 | City |
| Wheatland | 6 | 759 | 774 | -0.52% | 1,322 | 0.6 | City |
| Grand Mound | 7 | 607 | 618 | -0.49% | 324 | 1.9 | City |
| Delmar | 8 | 541 | 544 | -0.18% | 708 | 0.8 | City |
| Sabula | 9 | 490 | 501 | -0.61% | 992 | 0.5 | City |
| Oxford Junction | 10 | 423 | 427 | -0.24% | 653 | 0.6 | City |
| Lost Nation | 11 | 420 | 431 | -0.71% | 556 | 0.8 | City |
| Miles | 12 | 399 | 409 | -0.75% | 316 | 1.3 | City |
| Charlotte | 13 | 388 | 390 | -0.26% | 680 | 0.6 | City |
| Calamus | 14 | 348 | 354 | -0.57% | 706 | 0.5 | City |
| Goose Lake | 15 | 251 | 249 | 0% | 758 | 0.3 | City |
| Low Moor | 16 | 239 | 246 | -0.83% | 439 | 0.5 | City |
| Welton | 17 | 126 | 128 | -0.79% | 455 | 0.3 | City |
| Andover | 18 | 106 | 108 | -0.94% | 592 | 0.2 | City |
| Toronto | 19 | 100 | 102 | -0.99% | 549 | 0.2 | City |
| Baldwin | 20 | 99 | 101 | -1% | 261 | 0.4 | City |
| Spragueville | 21 | 89 | 91 | -1.11% | 120 | 0.7 | City |
| Big Rock | 22 | 14 | 34 | 7.69% | 42 | 0.3 | CDP |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Clinton is the largest city in Clinton County.
Big Rock is the smallest city in Clinton County.
There are 22 cities in Clinton County, Iowa.