Mackay
URL: https://knowledge.ivjn.us/en/places/id-mackay.html

Mackay is a town in Custer County, Idaho, United States; its 2020 population was 439.

**Mackay** is a town in [Custer County](https://knowledge.ivjn.us/en/places/id-custer-county.html), Idaho, United States. The 2020 census recorded a population of 439[^enwiki].

Updated: 2026-11-01

Relations:
- Located in: Custer County https://knowledge.ivjn.us/en/places/id-custer-county.html

Sources:
- Mackay, Idaho https://en.wikipedia.org/wiki/Mackay,_Idaho
- GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip