Union County
URL: https://knowledge.ivjn.us/en/places/il-union-county.html

Union County is a county of Illinois, United States.

## Overview

Union County is a county of [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States (FIPS il181), with a population of about 17,808[^geonames].

## Geography

- Coordinates: 37.4712, -89.2551
- Time zone: America/Chicago

Updated: 2026-10-29

Relations:
- Located in: Illinois https://knowledge.ivjn.us/en/places/illinois.html
- Contains places: Alto Pass https://knowledge.ivjn.us/en/places/il-alto-pass.html
- Contains places: Anna https://knowledge.ivjn.us/en/places/il-anna.html
- Contains places: Cobden https://knowledge.ivjn.us/en/places/il-cobden.html
- Contains places: Dongola https://knowledge.ivjn.us/en/places/il-dongola.html
- Contains places: Jonesboro https://knowledge.ivjn.us/en/places/il-jonesboro.html
- Contains places: Mill Creek https://knowledge.ivjn.us/en/places/il-mill-creek.html

Mentioned in:
- Alto Pass https://knowledge.ivjn.us/en/places/il-alto-pass.html
- Anna https://knowledge.ivjn.us/en/places/il-anna.html
- Cobden https://knowledge.ivjn.us/en/places/il-cobden.html
- Dongola https://knowledge.ivjn.us/en/places/il-dongola.html
- Jonesboro https://knowledge.ivjn.us/en/places/il-jonesboro.html
- Mill Creek https://knowledge.ivjn.us/en/places/il-mill-creek.html

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