Washington URL: https://knowledge.ivjn.us/en/places/il-washington.html Washington is a city in Illinois, United States. ## Overview Washington is a city in [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States, with a population of about 16,664[^geonames]. ## Geography - Coordinates: 40.7037, -89.4073 Updated: 2026-10-29 Relations: - Located in: Tazewell County https://knowledge.ivjn.us/en/places/il-tazewell-county.html Sources: - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip