Cities in Carroll County, Illinois by Population (2024)

There are 12 cities in Carroll 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.)

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Morrison1Illinois3,9524,067-0.73%1,5692.52
Savanna2Illinois2,6912,774-0.77%1,0292.62
Polo3Illinois2,2422,281-0.44%1,5451.45
Thomson4Illinois1,5971,611-0.25%7202.22
Lanark5Illinois1,4551,498-0.75%1,2981.12
Mount Carroll6Illinois1,4291,475-0.83%7132
Milledgeville7Illinois9951,023-0.7%1,4420.69
Lake Carroll8Illinois9025008.67%6713.55
Shannon9Illinois8648001.89%1,7930.48
Pearl City10Illinois752783-1.05%1,1640.65
Elizabeth11Illinois691705-0.58%7490.92
Chadwick12Illinois475482-0.42%1,5270.31

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.

What is the largest city in Carroll County, Illinois?

Morrison is the largest city in Carroll County.

What is the smallest city in Carroll County, Illinois?

Chadwick is the smallest city in Carroll County.

How many cities are in Carroll County?

There are 12 cities in Carroll County, Illinois.

Frequently Asked Questions