Cities in Henderson County, Illinois by Population (2024)

There are 17 cities in Henderson 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.)

Download Table Data

Enter your email below, and you'll receive this table's data in your inbox momentarily.

City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Monmouth1Illinois8,4578,896-1.28%1,9944.24
La Harpe2Illinois1,1441,174-0.69%8391.36
Oquawka3Illinois1,0621,124-1.48%7231.47
Dallas City4Illinois781807-0.89%3292.37
Stronghurst5Illinois769817-1.54%8810.87
Kirkwood6Illinois638676-1.54%6790.94
Keithsburg7Illinois5465450%2132.56
Lomax8Illinois377403-1.82%3171.19
Biggsville9Illinois285301-1.38%8460.34
Little York10Illinois268284-1.47%1,2020.22
Gladstone11Illinois217232-1.81%6030.36
Seaton12Illinois207213-0.96%1311.58
Carman13Illinois2031872.01%4960.41
Media14Illinois111118-1.77%651.70
Pontoosuc15Illinois99102-1%701.41
Raritan16Illinois96102-2.04%1,0110.10
Sciota17Illinois37370%1190.31

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 Henderson County, Illinois?

Monmouth is the largest city in Henderson County.

What is the smallest city in Henderson County, Illinois?

Sciota is the smallest city in Henderson County.

How many cities are in Henderson County?

There are 17 cities in Henderson County, Illinois.

Frequently Asked Questions