The population of Lake County on July 1, 2023 was 708,760, a decrease of 0.8% since 2020.
| Antioch | Small line chart with 2 values, ranging from 14618 to 14833. | 215 | 1.5% |
|---|---|---|---|
| Arlington Heights | Small line chart with 2 values, ranging from 77689 to 74495. | −3,194 | −4.1% |
| Bannockburn | Small line chart with 2 values, ranging from 1013 to 1005. | −8 | −0.8% |
| Barrington | Small line chart with 2 values, ranging from 10718 to 10476. | −242 | −2.3% |
| Barrington Hills | Small line chart with 2 values, ranging from 4106 to 4018. | −88 | −2.1% |
| Beach Park | Small line chart with 2 values, ranging from 14262 to 14057. | −205 | −1.4% |
| Buffalo Grove | Small line chart with 2 values, ranging from 43193 to 42482. | −711 | −1.6% |
| Deer Park | Small line chart with 2 values, ranging from 3688 to 3628. | −60 | −1.6% |
| Deerfield | Small line chart with 2 values, ranging from 19190 to 18884. | −306 | −1.6% |
| Fox Lake | Small line chart with 2 values, ranging from 10987 to 10805. | −182 | −1.7% |
| Fox River Grove | Small line chart with 2 values, ranging from 4698 to 4619. | −79 | −1.7% |
| Grayslake | Small line chart with 2 values, ranging from 21257 to 20954. | −303 | −1.4% |
| Green Oaks | Small line chart with 2 values, ranging from 4116 to 4060. | −56 | −1.4% |
| Gurnee | Small line chart with 2 values, ranging from 30715 to 30193. | −522 | −1.7% |
| Hainesville | Small line chart with 2 values, ranging from 3546 to 3489. | −57 | −1.6% |
| Hawthorn Woods | Small line chart with 2 values, ranging from 9065 to 9373. | 308 | 3.4% |
| Highland Park | Small line chart with 2 values, ranging from 30188 to 30272. | 84 | 0.3% |
| Highwood | Small line chart with 2 values, ranging from 5068 to 5304. | 236 | 4.7% |
| Indian Creek | Small line chart with 2 values, ranging from 531 to 526. | −5 | −0.9% |
| Island Lake | Small line chart with 2 values, ranging from 8048 to 7992. | −56 | −0.7% |
| Kildeer | Small line chart with 2 values, ranging from 4084 to 4377. | 293 | 7.2% |
| Lake Barrington | Small line chart with 2 values, ranging from 5098 to 5092. | −6 | −0.1% |
| Lake Bluff | Small line chart with 2 values, ranging from 5620 to 5534. | −86 | −1.5% |
| Lake Forest | Small line chart with 2 values, ranging from 19368 to 19354. | −14 | −0.1% |
| Lake Villa | Small line chart with 2 values, ranging from 8742 to 8625. | −117 | −1.3% |
| Lake Zurich | Small line chart with 2 values, ranging from 19791 to 19676. | −115 | −0.6% |
| Lakemoor | Small line chart with 2 values, ranging from 6186 to 6338. | 152 | 2.5% |
| Libertyville | Small line chart with 2 values, ranging from 20578 to 20332. | −246 | −1.2% |
| Lincolnshire | Small line chart with 2 values, ranging from 7946 to 7912. | −34 | −0.4% |
| Lindenhurst | Small line chart with 2 values, ranging from 14403 to 14339. | −64 | −0.4% |
| Long Grove | Small line chart with 2 values, ranging from 8366 to 8263. | −103 | −1.2% |
| Mundelein | Small line chart with 2 values, ranging from 31573 to 31790. | 217 | 0.7% |
| North Barrington | Small line chart with 2 values, ranging from 3140 to 3105. | −35 | −1.1% |
| North Chicago | Small line chart with 2 values, ranging from 30757 to 30416. | −341 | −1.1% |
| Old Mill Creek | Small line chart with 2 values, ranging from 164 to 162. | −2 | −1.2% |
| Park City | Small line chart with 2 values, ranging from 7891 to 7842. | −49 | −0.6% |
| Port Barrington | Small line chart with 2 values, ranging from 1587 to 1567. | −20 | −1.3% |
| Riverwoods | Small line chart with 2 values, ranging from 3796 to 3737. | −59 | −1.6% |
| Round Lake | Small line chart with 2 values, ranging from 18726 to 18430. | −296 | −1.6% |
| Round Lake Beach | Small line chart with 2 values, ranging from 27260 to 26783. | −477 | −1.7% |
| Round Lake Heights | Small line chart with 2 values, ranging from 2621 to 2575. | −46 | −1.8% |
| Round Lake Park | Small line chart with 2 values, ranging from 7672 to 7724. | 52 | 0.7% |
| Third Lake | Small line chart with 2 values, ranging from 1114 to 1097. | −17 | −1.5% |
| Tower Lakes | Small line chart with 2 values, ranging from 1224 to 1200. | −24 | −2.0% |
| Vernon Hills | Small line chart with 2 values, ranging from 26857 to 26677. | −180 | −0.7% |
| Volo | Small line chart with 2 values, ranging from 6160 to 7016. | 856 | 13.9% |
| Wadsworth | Small line chart with 2 values, ranging from 3513 to 3459. | −54 | −1.5% |
| Wauconda | Small line chart with 2 values, ranging from 14093 to 13891. | −202 | −1.4% |
| Waukegan | Small line chart with 2 values, ranging from 89312 to 87642. | −1,670 | −1.9% |
| Winthrop Harbor | Small line chart with 2 values, ranging from 6700 to 6594. | −106 | −1.6% |
| Zion | Small line chart with 2 values, ranging from 24678 to 24206. | −472 | −1.9% |