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About the maps

The map below shows the sanitary districts defined by Doctor John Leigh (1812-1888), who served as the first Medical Officer of Health for Manchester.

A set of maps were drawn for each district exhibiting the age of each block of buildings within their boundaries. 

A sanitary map of Manchester‌There are 34 map sheets in total which cover the following districts:

  • Ancoats
  • Deansgate
  • London Road
  • Market Street
  • St. George’s

Colour coding

Sanitary map of Manchester‌The maps document the estimated age of housing in four classes indicated by colour shading:

  • Brown (constructed before 1830)
  • Yellow (constructed between 1830 and 1850)
  • Grey (constructed between 1850 and 1870)
  • Green (constructed after 1870)

The categorisation provides an indication of the condition of the properties and sanitary standards of the surrounding streets.

Civic and industrial land use is shown by red shading and public houses are marked with a cross.

Key features like rivers, railway lines, streets and small courts are named.