Richland 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
Olney18,4528,691-0.7%1,2196.9City
Noble2616630-0.65%6061.0Village
Dundas33582597.51%5350.7CDP
Parkersburg4183185-0.54%2220.8Village
Claremont5159163-0.63%2010.8Village
Calhoun6157161-0.63%1720.9Village

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 Richland County, Illinois?

Olney is the largest city in Richland County.

What is the smallest city in Richland County, Illinois?

Calhoun is the smallest city in Richland County.

How many cities are in Richland County?

There are 6 cities in Richland County, Illinois.

Frequently Asked Questions