New local authority based population dataset with single year of age

A new dataset is released on Nomis on Wednesday 2 December 2015 giving mid-year population estimates for local authority based geographies, by single year of age and sex.

The dataset uses the mid-year population estimates, as at 30 June, published by ONS Population Estimates Unit. The figures within this dataset use the local authority estimates published in the summer of each year and are aggregated to other geographies in the local authority hierarchy. The single year of age data is also aggregated to quinary bands and to other commonly used age breakdowns. The estimates can be further broken down by sex.

The current dataset has data from 2001 to the latest 2014 estimates. It is intended to extend the datasets to include data back to 1991 in the coming weeks.

It is expected that this dataset will be updated each year alongside the release of the new mid-year estimates.

Nomis datasets

The new dataset can be accessed under the Population Estimates source in Nomis queries:

The existing dataset that gives estimates by five year age bands remains available but has been renamed to Population estimates - local authority based by five year age band.

Information Available


  • local authority: district / unitary
  • local authority: county / unitary
  • metropolitan counties
  • regions
  • countries


  • 2001 onwards (latest data is currently 2014)
  • 1991-2000 to be added shortly

Age bands

  • single year of age
  • five year (quinary) bands
  • labour market categories
    • 0 to 15 years
    • 16 and over
      • 16 to 64 years
        • 16 to 24 years
          • 16 to 17 years
          • 18 to 24 years
            • 18 to 21 years
        • 25 to 49 years
        • 50 to 64 years
      • 65 and over


  • Total persons
    • male
    • female

Further information and future developments

Further information on mid-year population estimates can be found in the latest statistical bulletin.

Following the release of this dataset, Nomis will be working with ONS Population Estimates Unit on a dataset based on output area level population estimates. It is hoped that this dataset will be available in the new year.