Fairfield URL: https://knowledge.ivjn.us/en/places/il-fairfield.html Fairfield is a town in Illinois, United States. ## Overview Fairfield is a town in [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States, with a population of about 5,040[^geonames]. ## Geography - Coordinates: 38.3789, -88.3598 Updated: 2026-10-29 Relations: - Located in: Wayne County https://knowledge.ivjn.us/en/places/il-wayne-county.html Sources: - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip