Warren URL: https://knowledge.ivjn.us/en/places/or-warren.html Warren is a town in Columbia County, Oregon, United States. Warren is a town in Columbia County, Oregon, United States.[^geonames] Updated: 2026-11-01 Relations: - Located in: Columbia County https://knowledge.ivjn.us/en/places/or-columbia-county.html Sources: - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip