Declo URL: https://knowledge.ivjn.us/en/places/id-declo.html Declo is a village in Idaho, United States. ## Overview Declo is a village in [Idaho](https://knowledge.ivjn.us/en/places/idaho.html), United States, with a population of about 353[^geonames]. ## Geography - Coordinates: 42.5182, -113.6281 Updated: 2026-10-29 Relations: - Located in: Cassia County https://knowledge.ivjn.us/en/places/id-cassia-county.html Sources: - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip