Small Area Microdata
Census 2001 Microdata for Local Authority Districts
The Small Area Microdata are a sample of records drawn from the 2001 Census of Population.
The file is a 5% sample of individuals for all countries of the UK, with 2.96 million cases. Local Authority is the lowest level of geography for England and Wales, Council Areas for Scotland and Parliamentary Constituencies for Northern Ireland.
The individual level data contain a wide range of Census topics including health, transport, housing, NS-SEC, education and demographic features.
For the first time local authority sample microdata is available for nearly all authorities. Sample sizes are large enough to satisfy flexible analyses; the median sample size for an authority is 5.6 thousand records. The largest sample size is for Birmingham which has 49 thousand cases while Teesdale, the smallest, has 1238 individual records. Only 7% of authorities have fewer than 3,000 cases, while nearly eighty authorities have more than 10,000 records - sample sizes which would normally be beyond the scope of a local survey.
What can you use the data for?
- Analyses for individual Local Authorities
- Undertaking geographic comparisons
- Produce tables to your own specification
- Test tables prior to ordering a custom table from Census Offices
- Undertake multivariate and/or multi-level analyses
- Working with other Census products, linking aggregate and microdata
- Adding in additional Local Authority level indicators
| How many records? Authorities with more than 10,000 cases:
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