County
· Illinois
Johnson County
Johnson County is a county in the U.S. state of Illinois. According to the 2020 census, it has a population of 13,308. Its county seat is Vienna. It is located in the southern portion of Illinois known locally as "Little Egypt".
13,463 population
(2021)
·
County area: Johnson
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Cities and towns 7
Reference data (Census of Governments 2022)
- Census ID (PID6)
- 124844
- FIPS state
- 17
- FIPS county
- 087
- FIPS place
- 99087
- Census record name
- COUNTY OF JOHNSON
- Mailing address
- PO BOX 38, VIENNA 62995