How are Output Areas defined?
OAs aim to:
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be of a size that exceeds population and households thresholds as may be imposed for the purposes of data publication
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be assembled from complete unit postcodes wherever possible
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have uniformity of geographical area and shape
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social homogeneity
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have uniformity of population size
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.
You can find out much more about Output Areas for 2001 from Martin, 2002 and from CHCC Unit 8: 2001 Census Output Areas. [Note: This link opens in a new window]