Saint Peter URL: https://knowledge.ivjn.us/en/places/il-saint-peter.html Saint Peter is a village in Illinois, United States. ## Overview Saint Peter is a village in [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States, with a population of about 359[^geonames]. ## Geography - Coordinates: 38.8681, -88.8539 Updated: 2026-10-29 Relations: - Located in: Fayette County https://knowledge.ivjn.us/en/places/il-fayette-county.html Sources: - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip