Full-Reuenthal has a population () of , 10.9% of the population are foreign nationals. Over the last 10 years (1997–2007) the population has changed at a rate of 0.5%. Most of the population () speaks
German(95.4%), with
Italian being second most common ( 1.1%) and
Portuguese being third ( 1.0%). The age distribution, , in Full-Reuenthal is; 99 children or 12.1% of the population are between 0 and 9 years old and 112 teenagers or 13.7% are between 10 and 19. Of the adult population, 73 people or 8.9% of the population are between 20 and 29 years old. 80 people or 9.8% are between 30 and 39, 158 people or 19.3% are between 40 and 49, and 125 people or 15.3% are between 50 and 59. The senior population distribution is 69 people or 8.4% of the population are between 60 and 69 years old, 62 people or 7.6% are between 70 and 79, there are 36 people or 4.4% who are between 80 and 89, and there are 4 people or 0.5% who are 90 and older. the average number of residents per living room was 0.55 which is about equal to the cantonal average of 0.57 per room. In this case, a room is defined as space of a housing unit of at least as normal bedrooms, dining rooms, living rooms, kitchens and habitable cellars and attics. About 74.9% of the total households were owner occupied, or in other words did not pay rent (though they may have a
mortgage or a
rent-to-own agreement). , there were 8 homes with 1 or 2 persons in the household, 115 homes with 3 or 4 persons in the household, and 172 homes with 5 or more persons in the household. There were a total of 0 empty apartments for a 0.0% vacancy rate. The historical population is given in the following table: ==Heritage sites of national significance==