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We have a wide range of maps of our county, including the impressive Bald map from the early nineteenth century, numerous Ordnance Survey maps, and many estate maps.

Our mapping system allows you search for a place name and to view the selected place in various maps so you can see how it has changed over the years.

It is also linked to the 1910 Census, Griffiths Valuation (1855/56) and Tourist Surveys from the 1940S so you can plot holdings and population changes as well as get descriptions of places from the past. 

  • The Bald Map is A map of the Maritime County of Mayo in 25 sheets commenced in 1809 and terminated in 1817 by William Bald F.R.S.E. Printed in 1830 (scale 2 inches)  
  • We have Ordnance Survey six-inch maps of County Mayo 1839 & 1900 ed. (the 1839 ed. available online) 
  • Recorded Monuments protected under Section 12 of the National Monuments (amendment) Act 1994. County Mayo Archaeological Constraint Maps. Office of Public Works 1999 – available in hard copy. 

A wide selection of Maps of Mayo is available here  

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