Clay County, Illinois Cities (2024)

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.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Flora14,6824,796-0.62%9984.7City
Louisville21,1101,144-0.8%1,3410.8Village
Clay City3824854-0.96%4621.8Village
Xenia4369381-0.81%7480.5Village
La Clede5201338.06%6550.3CDP
Iola69699-1.03%1001.0Village
Sailor Springs78891-1.12%3380.3Village

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 Clay County, Illinois?

Flora is the largest city in Clay County.

What is the smallest city in Clay County, Illinois?

Sailor Springs is the smallest city in Clay County.

How many cities are in Clay County?

There are 7 cities in Clay County, Illinois.

Frequently Asked Questions