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1991 SMS Set 2( District level migration data from the 1991 Census )Flow Data Information System
The 1991 SMS refer to counts of individuals who were in existence 12 months before the Census and who were resident at a different usual residence on 21 April 1991 to that a year previously.
A subset of SMS Set 2 migrant flows (persons) within and between districts has been created where the flows have been "blurred" from the original totals by adding or subtracting 0-5% on a random basis. This is referred to as the SMS sample migration data.
In order to encourage use of the interaction data, WICID has been designed to allow non-registered users to access the system, find out what data sets are available and discover how to use the interface software. ONS have given permission for users to extract and download data from the SMS sample migration data without needing to be registered to use the SMS/SWS.
All the 1991 SMS data have been derived from the 100% sample and include imputed households.
Flowerdew, R. and Green, A. (1993) Migration, transport and workplace statistics from the 1991 Census, in Dale, A. and Marsh, C. (eds) The 1991 Census User's Guide, HMSO, London: 269-94.
The following statements should be attached to all output produced using this data set
Data from this set should be cited in a bibliography as:
Office for National Statistics, 1991 Census: Sample Migration Data [computer file], UK Data Service
This data type is derived from:
1991 SMS Set 2( District level migration data from the 1991 Census )The following pre-defined totals are available from this data set:
There are 1 tables defined for this data set:
The data are available for the following geographies:
| Geographies of origin areas | Geographies of destination areas |
|---|---|
| Supported directly | |
| GB Districts 1991GB Counties 1991GB Standard Regions 1991 | GB Districts 1991GB Counties 1991GB Standard Regions 1991 |
| Supported via aggregation | |
| GB Countries 1991GB Standard Region Urban / Rural componentsDETR 99 zone systemGreat BritainCIDS 1991/2001 common geography - 'districts'CIDS 1991/2001 common geography - 'intermediate'CIDS 1991/2001 common geography - '100 zones'CIDS 1991/2001 common geography - 'city regions' | GB Countries 1991GB Standard Region Urban / Rural componentsDETR 99 zone systemGreat BritainCIDS 1991/2001 common geography - 'districts'CIDS 1991/2001 common geography - 'intermediate'CIDS 1991/2001 common geography - '100 zones'CIDS 1991/2001 common geography - 'city regions' |
Output for geographies that are only supported via aggregation will take longer than for those supported directly
| Persons | |
| Count | 1 |