Cities in Hancock County, Illinois by Population (2024)

There are 22 cities in Hancock 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)
Hamilton1Illinois2,6512,743-0.86%7443.56
Carthage2Illinois2,4072,489-0.82%9522.53
Warsaw3Illinois1,4511,505-0.89%2236.52
La Harpe4Illinois1,1341,174-0.87%8311.36
Colchester5Illinois1,0811,105-0.55%9401.15
Nauvoo6Illinois912942-0.76%2693.39
Mendon7Illinois843869-0.71%9840.86
Dallas City8Illinois777809-1.02%3272.37
Blandinsville9Illinois551563-0.54%6300.88
Augusta10Illinois534556-0.93%7730.69
Bowen11Illinois448462-0.66%1,0470.43
Plymouth12Illinois419435-0.95%7420.56
Loraine13Illinois296300-0.34%3510.84
Elvaston14Illinois145149-0.69%1810.80
West Point15Illinois137141-0.73%8150.17
Ferris16Illinois118126-1.67%601.97
Pontoosuc17Illinois98102-1.01%701.41
Tennessee18Illinois981000%2310.42
Basco19Illinois77790%3470.22
Bentley20Illinois27270%1890.14
Meyer21Illinois110-26.67%770.14
Niota22Illinois0850%00.52

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 Hancock County, Illinois?

Hamilton is the largest city in Hancock County.

What is the smallest city in Hancock County, Illinois?

Niota is the smallest city in Hancock County.

How many cities are in Hancock County?

There are 22 cities in Hancock County, Illinois.

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