Town

Portarlington

Cúil an tSúdaire

Portarlington’s French refugee settlement and twentieth-century generating station tell different histories of migration and work.

Watercolour and fine ink illustration of Saint Paul's French Church, Portarlington, County Laois in Portarlington.
Illustration, Saint Paul's French Church, Portarlington, County Laois
Recorded locationPortarlington53.16060° N · 7.19026° WInteractive map supplied by OpenStreetMap.
Recorded place location · Logainm.ie

The name

These Irish name elements are associated with this record in the Logainm glossary.

An element’s translation is a clue, rather than a complete explanation of the name. Its form and meaning depend on local history and the full Irish name.

Recorded forms

  • Cúil an tSúdaire · Irish · main form · validated name
  • Portarlington · English · main form

Place & story

People & connections

Arlington and Ruvigny

Henry Bennet founded Portarlington in 1666. Later owner Henri Massue, Marquis de Ruvigny, welcomed Huguenot refugees; about 500 lived here by 1702. [2]

French schools and surviving houses

French education distinguished the refugee settlement. Houses on French Street and Patrick Street, and Jargonelle pear trees in gardens, preserve further associations. [2]

Electricity from Clonsast

A new industrial chapter began when the generating station opened in 1950. Designed to consume sod peat from nearby Clonsast bog, it used steam to drive three turbo-alternator sets. At its peak the station consumed roughly 195,000 tonnes of peat annually and produced about 150 million units of electricity. ESB’s archive records decommissioning in 1988 and demolition in 1997. This connected the town to a landscape of fuel harvesting and national electricity supply. [3]

Geographic information

Place type
Town
County
Laois, Offaly
Civil parish
Lea
Civil parish
Clonyhurk
Coordinates
53.16060, -7.19026
Logainm ID
28604 ↗

Population over time

Portarlington — Census 2016 settlement footprint

Population within 2016 settlement boundaries

9,316people · 2022

02.5K5K7.5K10K 2016: 8,368 people20162022: 9,316 people2022

Both counts use the 2016 settlement boundary, allowing like-for-like comparison. CSO supplies the 2022 count on this older boundary for comparison only. The official 2022 Built Up Area has different boundaries.

View population figures
Portarlington — Census 2016 settlement footprint — census population
Census yearPopulation
20168,368
20229,316

Source: CSO Census 2022 Profile 1 — Appendix Table 1: Census 2022 De Facto Population for the 2016 Towns · Supporting source 1. CC BY 4.0. Retrieved 2026-10-25.

Portarlington, Laois and Offaly — Census town, CSO 2006 report

2002–2006: census town

6,004people · 2006

01.8K3.5K5.3K7K 2002: 4,001 people20022006: 6,004 people2006

These are the historical areas published in the 2006 census report. Boundaries may differ between censuses and from modern settlements. Legal towns, environs and suburbs are shown separately; none has been combined into a modern settlement total.

View population figures
Portarlington, Laois and Offaly — Census town, CSO 2006 report — census population
Census yearPopulation
20024,001
20066,004

Source: CSO C0112 — Alphabetical list of towns, populations 2002 and 2006 · Supporting source 1. CC BY 4.0. Retrieved 2026-10-25.

Portarlington, Laois and Offaly — Census town, CSO 1996 report

1991–1996: census town

3,320people · 1996

01K2K3K4K 1991: 3,211 people19911996: 3,320 people1996

These are the historical areas published in the 1996 census report. Boundaries may differ between censuses and from modern settlements. Legal towns, environs and suburbs are shown separately; none has been combined into a modern settlement total.

View population figures
Portarlington, Laois and Offaly — Census town, CSO 1996 report — census population
Census yearPopulation
19913,211
19963,320

Source: CSO A0112 — Alphabetical list of towns, populations 1991 and 1996 · Supporting source 1. CC BY 4.0. Retrieved 2026-10-25.

Other census areas and years

These figures use different area definitions. Read the boundary note before comparing them.

Portarlington, Laois and Offaly

Published census settlement populations

8,368people · 2016

Settlement boundaries changed during this period. Differences may reflect boundary changes as well as population change. Where a 2011 legal-town-and-environs count is shown, it has not been recalculated onto the 2016 settlement boundary.

View population figures
Portarlington, Laois and Offaly — census population
Census yearPopulation
20117,788
20168,368

Source: CSO E2016 — Population and Actual and Percentage Change 2011 to 2016. CC BY 4.0. Retrieved 2026-10-25.

Portarlington, Counties Laois & Offaly — Census 2022 Built Up Area

Built Up Area population, 2022

9,288people · 2022

Built Up Areas use a new land-use definition. Their population figures cannot be compared directly with Census 2016 settlement counts.

View population figures
Portarlington, Counties Laois & Offaly — Census 2022 Built Up Area — census population
Census yearPopulation
20229,288

Source: CSO F1015 — Population, Census 2022 Built Up Areas. CC BY 4.0. Retrieved 2026-10-25.

Sources & further reading

  1. Logainm.ie — Portarlington. Place names and geographic record, licensed under CC BY 4.0.
  2. Portarlington heritage trail · Laois County Council
  3. Portarlington generating station · ESB Archives
  4. Saint Paul's French Church, Portarlington, County Laois illustration: based on a County Laois - St Paul's Church - 20190924174207 by Trenchspike. AI-assisted watercolour and ink adaptation; cream paper margins added, incidental clutter omitted and fine details simplified. Licence: CC BY-SA 4.0.

Name record retrieved 2026-10-25 · Source record modified 2026-09-19. How this page was prepared.