| Main dwellings in buildings destined mainly for dwellings with some type of heating method according to year of construction of the building (grouped) by fuel used . 50-Zaragoza |
| TOTAL | Before 1900 | 1900-1920 | 1921-1940 | 1941-1950 | 1951-1960 | 1961-1970 | 1971-1980 | 1981-1990 | 1991-2001 | |||
| TOTAL | 306084 | 14103 | 6288 | 9239 | 12695 | 33333 | 61626 | 68978 | 50759 | 49063 | ||
| 40,34% | 20,05% | 22,71% | 29,31% | 35,16% | 37,30% | 41,09% | 27,59% | 48,52% | 62,43% | |||
| Gas | ||||||||||||
| Electricity | 17,65% | 23,43% | 22,15% | 22,98% | 23,28% | 29,72% | 26,08% | 10,72% | 9,39% | 12,45% | ||
| Petroleum or derivatives | 33,96% | 35,43% | 35,89% | 33,51% | 28,16% | 23,56% | 23,35% | 53,14% | 38,94% | 23,16% | ||
| Wood | 3,90% | 19,46% | 16,62% | 10,75% | 7,55% | 4,87% | 2,41% | 2,10% | 1,96% | 1,34% | ||
| Coal or derivatives | 3,63% | 1,23% | 1,83% | 2,93% | 5,29% | 4,07% | 6,41% | 5,77% | 0,81% | 0,39% | ||
| Others | 0,52% | 0,40% | 0,80% | 0,52% | 0,56% | 0,47% | 0,67% | 0,69% | 0,38% | 0,24% | ||