The total estimated population of UK for the year 2016 is about 65.64 million.
For the year 2016, the estimated birth rate is 7.86 births per 1,000, the lowest rate since 1992 and the death rate is 9.33 deaths per 1,000 members of the population, with an infant mortality rate of 4.5 deaths per 1,000 live births. The sex ratio is estimated to be 1.05 males for every female, and the growth rate of the population is estimated at 0.55%.
The distribution of population in the UK is uneven, with a majority of the population concentrated in England while the remaining three constituent parts - Wales, Scotland, and Northern Ireland, are relatively sparsely populated. In England too, almost one-third of the population lives in the southeastern portion centered around London. The estimated population density for the country for the year 2016 is 650 persons per sq mi.
The estimated figures for the year 2013, for age structure in the UK show that 17.3% of the population consists of children between 0-14 years, 12.8% of the population is in the early working age between 15-24 years, 41.1% of the population is in the prime working age between 25-54 years, 11.5% of the population is in the mature working age between 55-64 years, and 17.3% of the population is in the elderly age of 65 years and over.
As per the 2010 census, 80% of the total population in the UK is classified as urban while the remaining 20% is classified as rural population.