There are 29 cities in Kendall County, Illinois.
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 | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Aurora | 1 | Illinois | 175,535 | 180,197 | -0.66% | 3,896 | 45.05 |
| Naperville | 2 | Illinois | 150,456 | 149,416 | 0.17% | 3,842 | 39.16 |
| Joliet | 3 | Illinois | 149,845 | 150,221 | -0.06% | 2,266 | 66.12 |
| Bolingbrook | 4 | Illinois | 74,244 | 73,818 | 0.14% | 2,982 | 24.90 |
| Plainfield | 5 | Illinois | 47,549 | 44,937 | 1.39% | 1,866 | 25.48 |
| Romeoville | 6 | Illinois | 40,360 | 39,874 | 0.3% | 2,089 | 19.32 |
| Oswego | 7 | Illinois | 36,981 | 34,719 | 1.55% | 2,433 | 15.20 |
| Yorkville | 8 | Illinois | 25,987 | 21,683 | 4.32% | 1,300 | 20 |
| Montgomery | 9 | Illinois | 23,199 | 20,399 | 3.11% | 2,415 | 9.61 |
| North Aurora | 10 | Illinois | 18,526 | 18,280 | 0.34% | 2,445 | 7.58 |
| Shorewood | 11 | Illinois | 18,360 | 18,182 | 0.25% | 2,271 | 8.09 |
| Morris | 12 | Illinois | 14,514 | 14,206 | 0.53% | 1,171 | 12.39 |
| Channahon | 13 | Illinois | 14,382 | 13,470 | 1.61% | 881 | 16.33 |
| Plano | 14 | Illinois | 13,037 | 11,907 | 2.22% | 1,452 | 8.98 |
| Minooka | 15 | Illinois | 12,854 | 12,756 | 0.19% | 1,369 | 9.39 |
| Boulder Hill | 16 | Illinois | 9,291 | 9,081 | -1.36% | 6,372 | 1.46 |
| Sugar Grove | 17 | Illinois | 9,098 | 9,258 | -0.44% | 861 | 10.56 |
| Sandwich | 18 | Illinois | 7,102 | 7,210 | -0.38% | 1,500 | 4.74 |
| Lake Holiday | 19 | Illinois | 5,605 | 5,365 | 1.08% | 1,599 | 3.50 |
| Seneca | 20 | Illinois | 2,274 | 2,342 | -0.74% | 366 | 6.21 |
| Prestbury | 21 | Illinois | 2,198 | 1,978 | 2.28% | 3,511 | 0.63 |
| Somonauk | 22 | Illinois | 1,757 | 1,787 | -0.4% | 703 | 2.50 |
| Crystal Lawns | 23 | Illinois | 1,753 | 1,943 | -2.61% | 2,660 | 0.66 |
| Big Rock | 24 | Illinois | 1,073 | 1,105 | -0.74% | 248 | 4.32 |
| Newark | 25 | Illinois | 986 | 976 | 0.3% | 877 | 1.12 |
| Millington | 26 | Illinois | 615 | 617 | 0% | 869 | 0.71 |
| Millbrook | 27 | Illinois | 281 | 275 | 0.72% | 152 | 1.85 |
| Lisbon | 28 | Illinois | 277 | 271 | 0.73% | 131 | 2.12 |
| Plattville | 29 | Illinois | 222 | 218 | 0.45% | 98 | 2.26 |
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.
Aurora is the largest city in Kendall County.
Plattville is the smallest city in Kendall County.
There are 29 cities in Kendall County, Illinois.