There are 20 cities in Will County, Illinois.
City | Rank | 2023 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|
| Plainfield | 1 | 46,618 | 44,800 | 1.33% | 1,921 | 24.26 |
| Romeoville | 2 | 41,678 | 39,878 | 1.48% | 2,186 | 19.07 |
| New Lenox | 3 | 27,923 | 27,257 | 0.81% | 1,801 | 15.51 |
| Lockport | 4 | 26,040 | 26,157 | -0.15% | 2,288 | 11.38 |
| Homer Glen | 5 | 24,532 | 24,508 | 0.03% | 1,109 | 22.13 |
| Frankfort | 6 | 20,842 | 20,319 | 0.85% | 1,295 | 16.09 |
| Crest Hill | 7 | 20,102 | 20,389 | -0.47% | 2,228 | 9.02 |
| Mokena | 8 | 19,812 | 19,863 | -0.09% | 2,251 | 8.80 |
| Shorewood | 9 | 18,399 | 18,182 | 0.4% | 2,332 | 7.89 |
| Manhattan | 10 | 11,129 | 9,532 | 5.3% | 1,666 | 6.68 |
| Crete | 11 | 8,335 | 8,443 | -0.43% | 883 | 9.44 |
| Braidwood | 12 | 6,170 | 6,188 | -0.1% | 1,163 | 5.30 |
| Wilmington | 13 | 5,580 | 5,646 | -0.39% | 406 | 13.73 |
| Monee | 14 | 5,077 | 5,116 | -0.26% | 1,142 | 4.44 |
| Beecher | 15 | 4,660 | 4,705 | -0.32% | 1,677 | 2.78 |
| Peotone | 16 | 4,236 | 4,155 | 0.64% | 2,269 | 1.87 |
| Elwood | 17 | 2,200 | 2,224 | -0.36% | 161 | 13.67 |
| Rockdale | 18 | 1,960 | 2,005 | -0.76% | 2,453 | 0.80 |
| Symerton | 19 | 122 | 125 | -0.81% | 803 | 0.15 |
| Wilmington | 20 | 87 | 90 | -1.14% | 111 | 0.79 |
Plainfield is the largest city in Will County.
Wilmington is the smallest city in Will County.
There are 20 cities in Will County, Illinois.