rise of 2.9 per cent since mid-1991 according to new data released by
National Statistics today. The mid-1999 UK population is 0.4 per
cent higher than in mid-1998 when the population was estimated at
which increased by 27.3 per cent between 1991 and 1999. Although the
United Kingdom population increased overall, there were decreases in
some age groups. The largest decrease occurred in the number of
people aged 16-29. This group was estimated at 10,733,500 in 1999
which is a fall of 13.1 per cent since 1991.
Changes in the population age structure mid-1991 to mid-1999. Table A
shows for various age groups how the size of the United Kingdom
population has changed between mid-1991 and mid-1999. The population
has increased since 1991 with the biggest increases being observed in
three age groups:
- The working population of age 30 and over
- Children aged 5-15
- the very elderly age group of 85 and over
The working population aged 30 and over has increased by 12.1 per
cent since 1991. This increase is due to the post second world war
baby boom and to the high birth rates during the sixties. The very
elderly age group of 85 and over has increased by 27.3 per cent since
1991. This is due to an increased life expectancy.
Despite the overall increase in the population some age groups have
decreased since 1991:
- The working population of 16-29
- Children aged 0-4
- the early retired age group of 65/60-74
The decline since 1991 in the 16-29 age group is mainly as a result
of low fertility rates during the seventies. The decline since 1991
in the early retired age group of 65/60-74 years old is mainly a
result of low birth rates during the thirties.
Components of population change mid-1991 to mid-1999 Table B shows
components of population change in the United Kingdom between
mid-1991 and mid-1999. Of the total increase between mid-1998 and
mid-1999, 76,000 is due to natural change (more births than deaths).
The remainder, 188,400, is estimated to be mainly due to people
migrating to the United Kingdom and this includes people returning to
the United Kingdom after a stay abroad of a year or more.
Table 1 gives the estimated population by single year of age and sex
for the United Kingdom. Further tables by single year of age and sex
for the constituent countries of the United Kingdom and for Great
Britain are available on the National Statistics website. For
details of how to access these data see the section below.
Availability of population estimates on the Internet Population
estimates are available on the internet on the National Statistics
From 3 August 2000 the national level tables of population estimates
by age and sex for United Kingdom, Great Britain, England and Wales
combined, England, Wales, Scotland and Northern Ireland are available
on the National Statistics Website. These are available by accessing
the National Statistics Website and selecting-main features,,
'themes', 'population and migration', 'statbase datasets',
'population, census, migration and vital events'.
The population estimates by local authority areas and health
authority areas will be available from 24 August 2000 and can be
accessed via the internet.
In addition, population estimates will be published in a reference
volume and will be available in machine-readable format on disk or CD
Rom after 24 August. A charge is made for these data to cover costs.
An order form will be enclosed with the annual reference volume.
Descriptions of the methodology that are used to produce population
estimates will be provided with data purchased on disk or CD Rom and
are available on the National Statistics website.
1. This first release contains population estimates of the United
Kingdom. Population estimates for constituent countries of the UK are
available on the National Statistics website.
Population estimates for local and health authorities in England and
Wales will be available on 24 August 2000.
2. Population estimates for Scotland and Northern Ireland are
compiled by the General Register Office for Scotland and the Northern
Ireland Statistics and Research Agency respectively. Queries about
the production of estimates for Scotland and Northern Ireland should
be addressed to the respective offices.