Entity data for Mongolia's 21 aimags + 4 municipalities.
| Source | URL | Data Provided |
|---|---|---|
| National Statistics Office | nso.mn | 2010 Census population data, aimag structure |
| GADM (v4.1) | gadm.org | Administrative boundaries (aimags) |
| Wikipedia - Provinces of Mongolia | wikipedia.org | Administrative divisions (verification) |