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ONS coding system
The ONS coding system was a hierarchical code used in the United Kingdom for tabulating census and other statistical data. ONS refers to the Office for National Statistics.
It was replaced by the GSS coding system on 1 January 2011.
The code was constructed top down from a four character code representing a unitary authority or two-tier county and district.
Local government wards had a two-letter code within their local authority, and census output area an additional four digits within a ward.
The authority and ward codes were recognised by Eurostat as local administrative unit code levels 1 and 2 within the NUTS system.
An overlapping system encoded civil parish areas. Parishes were represented by an additional three digits within their local authority:
The codes for counties and districts were as follows.
Also showing NUTS(3) codes thus: (UKH12)
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ONS coding system
The ONS coding system was a hierarchical code used in the United Kingdom for tabulating census and other statistical data. ONS refers to the Office for National Statistics.
It was replaced by the GSS coding system on 1 January 2011.
The code was constructed top down from a four character code representing a unitary authority or two-tier county and district.
Local government wards had a two-letter code within their local authority, and census output area an additional four digits within a ward.
The authority and ward codes were recognised by Eurostat as local administrative unit code levels 1 and 2 within the NUTS system.
An overlapping system encoded civil parish areas. Parishes were represented by an additional three digits within their local authority:
The codes for counties and districts were as follows.
Also showing NUTS(3) codes thus: (UKH12)