Williamson County
URL: https://knowledge.ivjn.us/en/places/il-williamson-county.html

Williamson County is a county of Illinois, United States.

## Overview

Williamson County is a county of [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States (FIPS il199), with a population of about 66,357[^geonames].

## Geography

- Coordinates: 37.7302, -88.9299
- Time zone: America/Chicago

Updated: 2026-10-29

Relations:
- Located in: Illinois https://knowledge.ivjn.us/en/places/illinois.html
- Contains places: Cambria https://knowledge.ivjn.us/en/places/il-cambria.html
- Contains places: Bush https://knowledge.ivjn.us/en/places/il-bush.html
- Contains places: Carterville https://knowledge.ivjn.us/en/places/il-carterville.html
- Contains places: Colp https://knowledge.ivjn.us/en/places/il-colp.html
- Contains places: Crainville https://knowledge.ivjn.us/en/places/il-crainville.html
- Contains places: Creal Springs https://knowledge.ivjn.us/en/places/il-creal-springs.html
- Contains places: Crab Orchard https://knowledge.ivjn.us/en/places/il-crab-orchard.html
- Contains places: Energy https://knowledge.ivjn.us/en/places/il-energy.html
- Contains places: Freeman Spur https://knowledge.ivjn.us/en/places/il-freeman-spur.html
- Contains places: Herrin https://knowledge.ivjn.us/en/places/il-herrin.html

Mentioned in:
- Bush https://knowledge.ivjn.us/en/places/il-bush.html
- Cambria https://knowledge.ivjn.us/en/places/il-cambria.html
- Carterville https://knowledge.ivjn.us/en/places/il-carterville.html
- Colp https://knowledge.ivjn.us/en/places/il-colp.html
- Crab Orchard https://knowledge.ivjn.us/en/places/il-crab-orchard.html
- Crainville https://knowledge.ivjn.us/en/places/il-crainville.html
- Creal Springs https://knowledge.ivjn.us/en/places/il-creal-springs.html
- Energy https://knowledge.ivjn.us/en/places/il-energy.html
- Freeman Spur https://knowledge.ivjn.us/en/places/il-freeman-spur.html
- Herrin https://knowledge.ivjn.us/en/places/il-herrin.html

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