Town

Carlow

Ceatharlach

Carlow's riverside stronghold, its nineteenth-century partial destruction and a scientist's birthplace provide unusually concrete historical connections.

Recorded locationCarlow52.83192° N · 6.91504° WInteractive map supplied by OpenStreetMap.
Recorded place location · Logainm.ieOpen in OpenStreetMap ↗

The name

A reliable full-name meaning has not been established here. The recorded Irish and English forms are given without an unsupported translation.

Recorded forms

  • Ceatharlach · Irish · main form · validated name
  • Carlow · English · main form

Place & story

A strategic town

Carlow's castle and river crossing made it an important administrative and military centre. Lewis records the establishment of the Irish Exchequer at Carlow in the fourteenth century and a succession of sieges and changes of possession. His narrative also describes the failed insurgent attack of May 1798. These events place the town within national conflicts, but the surviving monument has another, more unexpected explanation for much of its present appearance. [2]

Middleton's blasting powder

The Office of Public Works records that Dr Philip Parry Middleton obtained the castle in 1814 and attempted to adapt it for an asylum. He used explosive charges to open up the vaulted interior. The eastern half collapsed, and further demolition followed for safety. The two surviving towers and connecting wall preserve the portion that escaped this nineteenth-century collapse. [3]

People & connections

Samuel Haughton's birthplace

The geologist, mathematician and physiologist Samuel Haughton was born in Carlow on 21 December 1821. The Dictionary of Irish Biography identifies his father as a merchant and traces his education to Trinity College Dublin, which he entered at sixteen. He remained associated with the college for the rest of his life. [4]

A scientist from a milling family

Carloviana's account of the commemorative plaque connects Haughton's family home with the Burrin, a mill and grain stores. The article describes the unveiling of a plaque in 2005 and places his childhood within the town's prosperous commercial world. That physical setting adds something more specific than a name on a list of notable natives: riverside industry was part of the family environment from which a later scientist emerged. The precise house identification is treated cautiously in the article itself. [5]

Geographic information

Place type
Town
County
Carlow
Barony
Carlow
Civil parish
Carlow
Civil parish
Clonmelsh
Civil parish
Urglin
Coordinates
52.83192, -6.91504
Logainm ID
1411922 ↗

Population over time

Carlow — Census 2016 settlement footprint

Population within 2016 settlement boundaries

27,215people · 2022

07.5K15K22.5K30K 2016: 24,272 people20162022: 27,215 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
Carlow — Census 2016 settlement footprint — census population
Census yearPopulation
201624,272
202227,215

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.

Other census areas and years

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

Carlow, Carlow — 2011 legal town and environs; 2016 census settlement

Published census settlement populations

24,272people · 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
Carlow, Carlow — 2011 legal town and environs; 2016 census settlement — census population
Census yearPopulation
201123,030
201624,272

Source: CSO E2016 — Population and Actual and Percentage Change 2011 to 2016 · Supporting source 1. CC BY 4.0. Retrieved 2026-10-25.

Carlow, Counties Carlow & Laois — Census 2022 Built Up Area

Built Up Area population, 2022

27,351people · 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
Carlow, Counties Carlow & Laois — Census 2022 Built Up Area — census population
Census yearPopulation
202227,351

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

Sources & further reading

  1. Logainm.ie — Carlow. Place names and geographic record, licensed under CC BY 4.0.
  2. Carlow Town History — Lewis,1837
  3. Carlow Castle — Office of Public Works
  4. Samuel Haughton — Dictionary of Irish Biography
  5. Samuel Haughton plaque — Carloviana 54,2005

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