There are 7 cities in Johnson County, Illinois.

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Vienna1Illinois1,3301,348-0.89%4692.84
Goreville2Illinois1,0491,064-0.85%3912.69
Cypress3Illinois214218-0.93%2840.75
Buncombe4Illinois203206-0.98%1711.19
New Burnside5Illinois152153-0.65%1451.04
Belknap6Illinois8887 831.06
Simpson7Illinois4244-2.33%800.53
showing: 7 rows

Cities in Johnson County, Illinois by Population (2024)

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.

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