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Lower Super Output Area (LSOA) were originally created for Census data, specifically for the output of census estimates. The Lower Super Output Area is the second lowest geographical level at which census estimates are provided, the lowest being Output Areas.

Many other government datasets have incorporated LSOAs as a standard release level. These can be used to compare locations across the country due to their standard sizes.LOSA can be combined with MSOA to group at a higher level. LSOA can also be reduced in size by using the smallest geographical level OAs.

The minimum LSOA size is 400 households and 1,000 resident people. The total number of LSOAs is 32,844 for England and 1,909 for Wales. LSOAs align to local authority district (LAD) boundaries, and also at the border between Scotland and England.

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