Johnson County, Illinois Cities (2026)

7 cities

City
Rank
2026 Pop. ↓
2020 Pop.
Annual Change
Density
Area (mi²)
Type
Vienna11,3491,3520%4763 City
Goreville21,0491,063-0.19%3913 Village
Cypress32192190%2911 Village
Buncombe42072070%1741 Village
New Burnside51521520%1451 Village
Belknap686860%811 Village
Simpson744440%841 Village

Johnson County Cities Summary

Largest City

Vienna is the largest city in Johnson County, with a population of 1,349.

Smallest City

Simpson is the smallest city in Johnson County, with a population of 44.

10 Largest Cities

There are 7 cities in Johnson County, Illinois.

Location of Johnson County