Piatt 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
Monticello16,0405,9500.37%1,5583.9City
Bement21,4621,484-0.41%1,8790.8Village
Cerro Gordo31,3031,315-0.23%1,7870.7Village
Mansfield4925936-0.32%1,8210.5Village
Hammond5499506-0.4%6590.8Village
De Land6443450-0.45%1,0450.4Village
Cisco7252255-0.4%1,3850.2Village
White Heath8151153-6.21%4430.3CDP

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 Piatt County, Illinois?

Monticello is the largest city in Piatt County.

What is the smallest city in Piatt County, Illinois?

White Heath is the smallest city in Piatt County.

How many cities are in Piatt County?

There are 8 cities in Piatt County, Illinois.

Frequently Asked Questions