Cities in Knox County, Illinois by Population (2024)

There are 24 cities in Knox 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)
Galesburg1Illinois28,56629,944-1.19%1,60817.76
Abingdon2Illinois2,7882,946-1.38%1,9561.43
Knoxville3Illinois2,7622,892-1.15%1,1752.35
Galva4Illinois2,3742,460-0.88%8592.77
Farmington5Illinois2,2992,385-0.91%1,5281.50
Elmwood6Illinois1,9852,055-0.85%1,4221.40
Oak Run7Illinois7594686.01%1784.28
Woodhull8Illinois722754-1.1%8220.88
East Galesburg9Illinois721759-1.23%5281.36
Wataga10Illinois700740-1.41%8440.83
Oneida11Illinois662694-1.19%8680.76
Yates City12Illinois607641-1.3%1,2310.49
Williamsfield13Illinois542568-1.09%4401.23
Altona14Illinois438462-1.35%4670.94
London Mills15Illinois346350-0.29%5060.68
Victoria16Illinois257269-1.15%5700.45
Henderson17Illinois254266-1.17%9580.27
Maquon18Illinois208222-1.42%1,2840.16
Rio19Illinois199209-1%6380.31
Norris20Illinois167173-0.6%5900.28
La Fayette21Illinois1601620%8470.19
St. Augustine22Illinois112118-0.89%1890.59
Nekoma23Illinois56483.7%4270.13
Gilson24Illinois48194-42.86%1450.33

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 Knox County, Illinois?

Galesburg is the largest city in Knox County.

What is the smallest city in Knox County, Illinois?

Gilson is the smallest city in Knox County.

How many cities are in Knox County?

There are 24 cities in Knox County, Illinois.

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