Population and Housing Censuses León Dwellings by municipalities (with over 50,000 inhabitants or capitals), type of housing and year of construction (aggregate) of the building Units: dwellings Total Before 1900 From 1900 to 1920 From 1921 to 1940 From 1941 to 1950 From 1951 to 1960 From 1961 to 1970 From 1971 to 1980 From 1981 to 1990 From 1991 to 2001 From 2002 to 2011 No data recorded 2.1 Total main dwellings 24089 León 57,490 220 437 1,196 1,790 5,175 11,296 11,516 7,496 10,355 4,630 3,380 24115 Ponferrada 28,307 120 111 193 855 2,388 3,782 5,150 4,937 6,381 3,871 521 2.21 Secondary dwellings 24089 León 5,889 29 17 144 224 626 1,481 1,531 802 425 497 112 24115 Ponferrada 3,643 134 120 .. 327 357 472 521 497 710 492 12 2.22 Empty dwellings 24089 León 15,346 258 286 551 1,028 1,787 3,027 1,672 1,306 2,416 2,751 264 24115 Ponferrada 5,742 168 250 175 326 735 1,043 899 577 870 701 .. Notes: Source: National Statistics Institute