Johnson 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
Vienna11,3421,346-0.07%4732.8City
Goreville21,0591,063-0.09%3942.7Village
Cypress32182180%2900.8Village
Buncombe42062060%1741.2Village
New Burnside51531530%1461.0Village
Belknap685850%801.1Village
Simpson744440%840.5Village

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 Johnson County, Illinois?

Vienna is the largest city in Johnson County.

What is the smallest city in Johnson County, Illinois?

Simpson is the smallest city in Johnson County.

How many cities are in Johnson County?

There are 7 cities in Johnson County, Illinois.

Frequently Asked Questions