Town

Nenagh

An tAonach

Nenagh’s crossroads and castle stand within a history of markets, religious hospitality and links to the Shannon waterway.

Watercolour and fine ink illustration of Nenagh Castle keep, County Tipperary in Nenagh.
Illustration, Nenagh Castle keep, County Tipperary
Recorded locationNenagh52.86342° N · 8.19994° WInteractive map supplied by OpenStreetMap.
Recorded place location · Logainm.ie

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

  • An tAonach · Irish · main form · validated name
  • Nenagh · English · main form

Place & story

The market town

Lewis’s 1837 account describes four streets meeting in the centre, markets for grain and cattle and a stream running towards Lough Derg. It places Nenagh on the Limerick–Dublin mail route. The combination made the town a point where farming, road traffic and movement towards the lake could intersect. His opening population distinguishes town and parish, so even a seemingly straightforward number needs its geographical scope retained. [2]

Keep and religious houses

The directory describes the large round keep as part of a castle enclosure with additional towers. It separately records a hospital associated with Theobald Walter and a Franciscan friary. [2]

People & connections

John Desmond Bernal’s birthplace

The physicist and crystallographer John Desmond Bernal was born in Nenagh in 1901. The Science Museum Group records the town as his birthplace. His scientific education and professional work developed mainly in Britain, where he studied at Cambridge and became known for the study of molecular structure. [3] [4]

The National Portrait Gallery’s account places Bernal at Cambridge’s Cavendish Laboratory and later at Birkbeck College. He also worked as a scientific adviser during the Second World War and explored the relationship between science and society in The Social Function of Science, published in 1939. His career adds a twentieth-century scientific and political strand to the town’s older castle, market and administrative history. [4]

Geographic information

Place type
Town
County
Tipperary
Coordinates
52.86342, -8.19994
Logainm ID
1165378 ↗

Population over time

Nenagh — Census 2016 settlement footprint

Population within 2016 settlement boundaries

9,927people · 2022

02.5K5K7.5K10K 2016: 8,968 people20162022: 9,927 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
Nenagh — Census 2016 settlement footprint — census population
Census yearPopulation
20168,968
20229,927

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.

Nenagh Legal Town, North Tipperary — Legal town, CSO 2006 report

2002–2006: legal town

7,415people · 2006

02K4K6K8K 2002: 6,121 people20022006: 7,415 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
Nenagh Legal Town, North Tipperary — Legal town, CSO 2006 report — census population
Census yearPopulation
20026,121
20067,415

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

Nenagh Environs, North Tipperary — Town environs only, CSO 2006 report

2002–2006: town environs only

336people · 2006

0100200300400 2002: 333 people20022006: 336 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
Nenagh Environs, North Tipperary — Town environs only, CSO 2006 report — census population
Census yearPopulation
2002333
2006336

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

Nenagh Legal Town, North Tipperary — Legal town, CSO 1996 report

1991–1996: legal town

5,645people · 1996

01.5K3K4.5K6K 1991: 5,525 people19911996: 5,645 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
Nenagh Legal Town, North Tipperary — Legal town, CSO 1996 report — census population
Census yearPopulation
19915,525
19965,645

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

Nenagh Environs, North Tipperary — Town environs only, CSO 1996 report

1991–1996: town environs only

268people · 1996

075150225300 1991: 300 people19911996: 268 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
Nenagh Environs, North Tipperary — Town environs only, CSO 1996 report — census population
Census yearPopulation
1991300
1996268

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

Nenagh, Tipperary — Legal town, CSO 1986 report

1981–1986: legal town

5,483people · 1986

01.5K3K4.5K6K 1981: 5,717 people19811986: 5,483 people1986

Figures cover the historical town area printed in the 1986 report. Boundaries may have changed between censuses. Legal town, environs and suburb totals remain separate and differ from modern settlement boundaries.

View population figures
Nenagh, Tipperary — Legal town, CSO 1986 report — census population
Census yearPopulation
19815,717
19865,483

Source: CSO Census 1986, Volume 1, Table 10, page 62. Creative Commons Attribution 4.0 International (CC BY 4.0). Retrieved 2026-10-25.

Nenagh, Tipperary — Town environs only, CSO 1986 report

1981–1986: town environs only

294people · 1986

075150225300 1981: 266 people19811986: 294 people1986

Figures cover the historical town area printed in the 1986 report. Boundaries may have changed between censuses. Legal town, environs and suburb totals remain separate and differ from modern settlement boundaries.

View population figures
Nenagh, Tipperary — Town environs only, CSO 1986 report — census population
Census yearPopulation
1981266
1986294

Source: CSO Census 1986, Volume 1, Table 10, page 62. Creative Commons Attribution 4.0 International (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.

Nenagh, Tipperary — 2011 legal town and environs; 2016 census settlement

Published census settlement populations

8,968people · 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
Nenagh, Tipperary — 2011 legal town and environs; 2016 census settlement — census population
Census yearPopulation
20118,439
20168,968

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

Nenagh, Co Tipperary — Census 2022 Built Up Area

Built Up Area population, 2022

9,895people · 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
Nenagh, Co Tipperary — Census 2022 Built Up Area — census population
Census yearPopulation
20229,895

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

Sources & further reading

  1. Logainm.ie — Nenagh. Place names and geographic record, licensed under CC BY 4.0.
  2. Nenagh — A Topographical Dictionary of Ireland (1837)
  3. John Desmond Bernal — Science Museum Group Collection
  4. John Desmond Bernal — National Portrait Gallery
  5. Nenagh Castle keep, County Tipperary illustration: based on a Nenagh Castle by David P Howard. AI-assisted watercolour and ink adaptation; cream paper margins added, incidental clutter omitted and fine details simplified. Licence: CC BY-SA 2.0.

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