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Scottish Parliamentary Constituency (SPC) Population Estimates (2011 Data Zone based)

Scottish Parliamentary Constituency (SPC) Population Estimates (2011 Data Zone based)

National Statistics LogoLast update: 1 September 2022
Next update: TBC

This section provides annual mid-year population estimates for the 73 Scottish Parliamentary Constituencies (SPCs). The constituency boundaries and names correspond to those defined for the 2021 Scottish Parliament elections. The population estimates are available for each year from 2001 onwards broken down by sex and single year of age.

Parliamentary constituency boundaries may change from one election to the next. A constituency in the 2021 elections may have a different boundary from one with the same name in earlier elections. These estimates show how the populations in 2021 SPCs have changed over time.

Populations for SPCs are based on data zone population estimates where each data zone has been assigned to a particular SPC on a ‘best-fit’ basis. Where a data zone crosses the boundary of two (or more) SPCs it was assigned to the constituency containing the location of the population-weighted centroid of the data zone. More information on data zone population estimates is available on the Small Area Population Estimates section of this website.

Work carried out using 2011 Census data suggested that SPC population estimates based on 2011 Data Zones were within 2.5 per cent of the ‘true’ (that is Postcode based) population for 71 out of the 73 Scottish Parliamentary Constituencies. The estimates for the remaining two SPCs (Glasgow Maryhill and Springburn and Glasgow Kelvin) have been adjusted to account for a boundary problem. The Evaluation of Non Standard Geography Population Estimates report on this website gives further information on the data used in the process.


Maps and further information on the parliamentary constituency boundaries are available on the Scottish Boundary Commission website.

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