Historic Counties Institute

Geography • Identity • Continuity

Reference, evidence, and public education for the historic counties.

Historic counties are the enduring geography. Councils are administration, lieutenancies are ceremonial – neither define the counties.

County Dossier

Offaly

A central county of bogland, river margins and old kingdoms.

Offaly lies in the central midlands where raised bog, pasture and the Shannon corridor meet. Much of the county has a spacious, low-lying character broken by river systems and remnants of older woodland.

Offaly county reference map

At a glance

Offaly at a glance

A central county of bogland, river margins and old kingdoms.

Nation Ireland
Formal name County Offaly
Local name Uíbh Fhailí
Foundation 1556
  • Ancient Uí Failghe territory
  • Shannon edge, bogs and monasteries
  • Birthplace of Shane Lowry, golfer (1987)
  • Area: 800 sq miles / 2,072 km²
  • Population: 76,687
  • County Top: Arderin (1,729ft / 527m)

County Geography

Offaly meets Westmeath to the north, Kildare to the east, Laois to the south-east, Tipperary to the south-west, and Galway and Roscommon across the Shannon to the west and north-west. The county is shaped by its central bogland, the long western river line, and the low midland plain that stretches between them.

Offaly is easy to recognise through its central bogland, midland plain, and Shannon-side west.

Map Reference

View Offaly on the map

Offaly is the county. The map shows its boundary, places, and neighbouring counties.

Open Offaly in the Interactive Map

Places and routes

Tullamore, Birr, Edenderry, Clara, and Shannonbridge show the county from its central plain and southern side to its eastern approach and western river edge.

Connections

The county’s routes have long crossed through Tullamore, linked Birr and Edenderry across the midland plain, and run west toward the Shannon crossings at Shannonbridge. Movement follows the same plain, bog, and river-edge pattern.

Offaly landscape or key location
Birr Castle, County Offaly.

Names

  • Offaly
  • County Offaly
  • County of Offaly
  • Uíbh Fhailí

Uíbh Fhailí is the Irish form of Offaly. County Offaly is the formal historical style, the older historical background lies in Uí Failghe, and the older Offaly name ultimately outlasted the later title King’s County.

Offaly was shired in the sixteenth century, and the county’s own setting of bogland, river edge, and plain has remained easy to read ever since. That midland geography still gives the historic county a clear shape.

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County Reference

Explore Offaly

Open the map to explore Offaly, or return to the county index to browse other counties.