Ranking · Illinois
Fastest-growing and fastest-shrinking places in Illinois
Wonder Lake has the highest population change, 2020 to 2025 of Illinois's 1,347 ranked places (+39.4%); Sumner has the lowest (−37.2%). Ranked: places with 1,000 or more residents in the 2020 Census that are incorporated (the Census Bureau estimates only those each year).
Which are the fastest-growing places?
Fastest-growing places in Illinois, first to fifth: Wonder Lake (+39.4%), Buckheart Township (+26.4%), Yorkville (+23.6%), Pingree Grove (+21.1%) and Hampshire (+21.0%).
| Rank | Place | Population change, 2020 to 2025 |
|---|---|---|
| 1 | Wonder Lake | +39.4% |
| 2 | Buckheart Township | +26.4% |
| 3 | Yorkville | +23.6% |
| 4 | Pingree Grove | +21.1% |
| 5 | Hampshire | +21.0% |
| 6 | Cambria | +20.2% |
| 7 | Kendall Township | +18.4% |
| 8 | East Fork Township, Montgomery County | +18.0% |
| 9 | Manhattan | +16.6% |
| 10 | Oswego | +15.4% |
| 11 | Hampshire Township | +15.4% |
| 12 | Elburn | +14.5% |
| 13 | Kildeer | +14.5% |
| 14 | Waterman | +14.4% |
| 15 | Bristol Township | +13.8% |
| 16 | Manhattan Township | +13.2% |
| 17 | Warrenville | +12.2% |
| 18 | Mahomet | +11.8% |
| 19 | Plainfield | +11.5% |
| 20 | Rutland Township, Kane County | +11.2% |
| 21 | Clinton Township | +11.1% |
| 22 | Quarry Township | +10.9% |
| 23 | Oswego Township | +10.8% |
| 24 | North Chicago | +10.7% |
| 25 | West Dundee | +10.6% |
Source: Census Bureau population estimates, Vintage 2025 (SUB-EST2025) · Census population estimates
Which are the fastest-shrinking places?
Fastest-shrinking places in Illinois, first to fifth: Sumner (−37.2%), Christy Township (−32.3%), Sheridan (−13.2%), Cairo (−12.9%) and Denison Township (−8.9%).
| Rank | Place | Population change, 2020 to 2025 |
|---|---|---|
| 1,347 | Sumner | −37.2% |
| 1,346 | Christy Township | −32.3% |
| 1,345 | Sheridan | −13.2% |
| 1,344 | Cairo | −12.9% |
| 1,343 | Denison Township | −8.9% |
| 1,342 | Bridgeport Township | −8.5% |
| 1,341 | Bridgeport | −8.3% |
| 1,340 | Mission Township | −8.1% |
| 1,339 | Broadwell Township | −7.1% |
| 1,338 | River Forest | −7.1% |
| 1,337 | Gold Hill Township | −6.8% |
| 1,336 | Stronghurst Township | −6.6% |
| 1,335 | Sharon Township | −6.5% |
| 1,334 | Shawneetown | −6.4% |
| 1,333 | Oquawka | −6.3% |
| 1,332 | Oquawka Township | −5.9% |
| 1,331 | Marissa | −5.8% |
| 1,330 | Bannockburn | −5.8% |
| 1,329 | Macomb | −5.8% |
| 1,328 | Dupo | −5.7% |
| 1,327 | Greenfield | −5.7% |
| 1,326 | Mason City | −5.6% |
| 1,325 | Albion | −5.6% |
| 1,324 | Roodhouse Township | −5.6% |
| 1,323 | Carrollton Township | −5.6% |
Source: Census Bureau population estimates, Vintage 2025 (SUB-EST2025) · Census population estimates
How is this ranking made?
Each place's population change, 2020 to 2025 is read from the Census Bureau's April 1, 2020 estimates base and its July 1, 2025 estimate. A place enters the ranking if it had 1,000 or more residents in the 2020 Census and is incorporated. Ties in the published figure share a rank. This is a measurement of one figure, not a judgment of a place.
Towns and townships are ranked beside cities, villages and census-designated places, and a census-designated place can lie inside a township, so one area can appear twice, once as each.
Source: PlainCities ranking method applied to the Census Bureau population estimates, Vintage 2025 (SUB-EST2025) · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections