| Type: | Municipality |
| Official Name: | Monterrubio de la Demanda |
| Nickname: | Monterrubio |
| Postal Code: | 09615 |
| Area Total Km2: | 15.11 |
| Elevation M: | 1210 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Website: | http://www.monterrubiodelademanda.es/ |
Monterrubio de la Demanda is a municipality and village located in the province of Burgos, Castile and León, Spain.
According to the 2004 census (INE), the municipality had a population of 100 inhabitants. By 2018 the population had declined to 59.