Johnson County
URL: https://knowledge.ivjn.us/en/places/il-johnson-county.html

Johnson County is a county of Illinois, United States.

## Overview

Johnson County is a county of [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States (FIPS il087), with a population of about 12,582[^geonames].

## Geography

- Coordinates: 37.4596, -88.8809
- Time zone: America/Chicago

Updated: 2026-10-29

Relations:
- Located in: Illinois https://knowledge.ivjn.us/en/places/illinois.html
- Contains places: Belknap https://knowledge.ivjn.us/en/places/il-belknap.html
- Contains places: Buncombe https://knowledge.ivjn.us/en/places/il-buncombe.html
- Contains places: Cypress https://knowledge.ivjn.us/en/places/il-cypress.html
- Contains places: Goreville https://knowledge.ivjn.us/en/places/il-goreville.html
- Contains places: New Burnside https://knowledge.ivjn.us/en/places/il-new-burnside.html
- Contains places: Simpson https://knowledge.ivjn.us/en/places/il-simpson.html
- Contains places: Vienna https://knowledge.ivjn.us/en/places/il-vienna.html

Mentioned in:
- Belknap https://knowledge.ivjn.us/en/places/il-belknap.html
- Buncombe https://knowledge.ivjn.us/en/places/il-buncombe.html
- Cypress https://knowledge.ivjn.us/en/places/il-cypress.html
- Goreville https://knowledge.ivjn.us/en/places/il-goreville.html
- New Burnside https://knowledge.ivjn.us/en/places/il-new-burnside.html
- Simpson https://knowledge.ivjn.us/en/places/il-simpson.html
- Vienna https://knowledge.ivjn.us/en/places/il-vienna.html

Sources:
- GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip