Rio Dell URL: https://knowledge.ivjn.us/en/places/ca-rio-dell.html Rio Dell is a town in California, United States. ## Overview Rio Dell is a town in [California](https://knowledge.ivjn.us/en/places/california.html), United States, with a population of about 3,387[^geonames]. ## Geography - Coordinates: 40.4993, -124.1064 Updated: 2026-10-29 Relations: - Located in: Humboldt County https://knowledge.ivjn.us/en/places/ca-humboldt-county.html Sources: - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip