Ordnance Survey Maps - Six-inch Ireland, 1829-1842

The most comprehensive, topographic mapping covering all of Ireland from the 1820s to the 1840s.

(We currently only have first edition maps online, but we are planning to add later editions / dates during October 2023).

Browse the maps:

• As individual sheets using a zoomable map of Ireland
• By map sheet number (eg. C. Galway, Sheet 20) – county text lists

See also:

• Guide to abbreviations – alphabetical list of standard OS abbreviations
• Guide to symbols – OS Characteristics Sheet
• Characters of writing – OS Lettering Styles (1897)
• List of counties, with their dates of survey.