Hamilton County URL: https://knowledge.ivjn.us/en/places/il-hamilton-county.html Hamilton County is a county of Illinois, United States. ## Overview Hamilton County is a county of [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States (FIPS il065), with a population of about 8,457[^geonames]. ## Geography - Coordinates: 38.0816, -88.5391 - Time zone: America/Chicago Updated: 2026-10-29 Relations: - Located in: Illinois https://knowledge.ivjn.us/en/places/illinois.html - Contains places: Belle Prairie City https://knowledge.ivjn.us/en/places/il-belle-prairie-city.html - Contains places: Broughton https://knowledge.ivjn.us/en/places/il-broughton.html - Contains places: Dahlgren https://knowledge.ivjn.us/en/places/il-dahlgren.html - Contains places: Macedonia https://knowledge.ivjn.us/en/places/il-macedonia.html - Contains places: McLeansboro https://knowledge.ivjn.us/en/places/il-mcleansboro.html Mentioned in: - Belle Prairie City https://knowledge.ivjn.us/en/places/il-belle-prairie-city.html - Broughton https://knowledge.ivjn.us/en/places/il-broughton.html - Dahlgren https://knowledge.ivjn.us/en/places/il-dahlgren.html - Macedonia https://knowledge.ivjn.us/en/places/il-macedonia.html - McLeansboro https://knowledge.ivjn.us/en/places/il-mcleansboro.html Sources: - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip