The population is 37,970 (2013), its population density is 670/km² and the area is 57.08 km². The elevation is 420 m. Los Realejos is the western terminus of the TF-5 motorway.
The town is split into two distinct zones:
Realejo Alto (High or Upper Realejo)
Realejo Bajo (Low or Lower Realejo)
These zones (zonas) are both geographic (geográficas) -- split by a large deep water gully (Barranco) -- and historical (históricas) -- during the Spanish conquest (conquista) of the island(s) the local Guanches had a camp in the high town area, and the low town area was occupied by the Spanish. Also each zone has its own Baroque church, both of which were built shortly after the success of the Spanish conquest. The municipality was founded as Realejo de Arriba.
The area governed by the local council also includes other smaller villages such as Palo Blanco, Cruz Santa, Mocan, Icod de Alto, Tigaiga and others. Although recently, as a result of population growth and construction, these have merged into what seems to be one town.
The municipality of Los Realejos also includes a few beaches of note, Playa del Socorro being the most popular with both local and tourists. Also worthy of mention are Playa de Castro and Playa de Fajana, although these are both slightly less accessible than Socorro. Los Realejos is the home of English language newspaper the Tenerife News. Los Realejos is the Shrine of Our Lady of Mount Carmel, which is the main Marian shrine north of the island of Tenerife.