Town

Knock

Cnoc Mhuire

Knock became an international pilgrimage centre after fifteen witnesses reported an apparition in 1879; its later history includes monumental religious art and a campaign for an airport.

Watercolour and fine ink illustration of Basilica of Our Lady, Queen of Ireland, Knock.
Illustration, Basilica of Our Lady, Queen of Ireland, Knock
Recorded locationKnock53.79235° N · 8.91941° 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

  • Cnoc Mhuire · Irish · main form · validated name
  • An Cnoc · Irish · main form
  • Knock · English · main form

Place & story

The witnesses of August 1879

On the evening of 21 August 1879, people at Knock reported seeing figures identified as Mary, Joseph and John the Evangelist beside the parish church, with a lamb, altar and cross. Fifteen official witnesses gave testimony to an ecclesiastical inquiry that October. Archbishop John MacHale appointed the commission, whose investigators reported favourably on their evidence. Pilgrims began travelling to the village, and Knock developed around the reported event. A much larger church opened in 1976 and became a basilica during Pope John Paul II's visit in 1979. [2]

A mosaic made in Italy

The basilica's large apparition mosaic was unveiled on 28 February 2016. Irish illustrator P. J. Lynch designed the scene from the witnesses' descriptions, and the Travisanutto workshop at Spilimbergo in Italy made it from about one and a half million individual pieces. The artisans worked on the mosaic for eight months before transporting it to Knock in sections. Installed behind the sanctuary, the fourteen-metre-square work became the concluding feature of a major refurbishment. Its creation brought Irish illustration and Italian mosaic craftsmanship together in one of the shrine's most distinctive interiors. [3]

People & connections

Monsignor James Horan and the airport

Knock's parish priest, Monsignor James Horan, championed an international airport in rural Mayo during the early 1980s. He sought easier access to the west for pilgrims and other travellers and gathered substantial community support for the project. The airport opened in 1986. Although its name is closely associated with the shrine, the airport serves the wider western region from a separate location. Its own institutional history identifies Horan's campaign as the foundation of a transport venture whose significance extended far beyond parish and pilgrimage travel. [4]

Geographic information

Place type
Town
County
Mayo
Barony
Costello
Civil parish
Knock
Coordinates
53.79235, -8.91941
Logainm ID
36077 ↗

Population over time

Knock — Census 2016 settlement footprint

Population within 2016 settlement boundaries

1,102people · 2022

05001K1.5K2K 2016: 972 people20162022: 1,102 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
Knock — Census 2016 settlement footprint — census population
Census yearPopulation
2016972
20221,102

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.

Knock, Mayo — Census town, CSO 2006 report

2002–2006: census town

745people · 2006

0200400600800 2002: 595 people20022006: 745 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
Knock, Mayo — Census town, CSO 2006 report — census population
Census yearPopulation
2002595
2006745

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

Knock, Mayo — Census town, CSO 1996 report

1991–1996: census town

575people · 1996

0150300450600 1991: 440 people19911996: 575 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
Knock, Mayo — Census town, CSO 1996 report — census population
Census yearPopulation
1991440
1996575

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

Knock, Mayo — Census town, CSO 1986 report

1981–1986: census town

332people · 1986

0100200300400 1981: 314 people19811986: 332 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
Knock, Mayo — Census town, CSO 1986 report — census population
Census yearPopulation
1981314
1986332

Source: CSO Census 1986, Volume 1, Table 10, page 66. 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.

Knock, Mayo

Published census settlement populations

972people · 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
Knock, Mayo — census population
Census yearPopulation
2011811
2016972

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

Knock, Co Mayo — Census 2022 Built Up Area

Built Up Area population, 2022

1,029people · 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
Knock, Co Mayo — Census 2022 Built Up Area — census population
Census yearPopulation
20221,029

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

Sources & further reading

  1. Logainm.ie — Knock. Place names and geographic record, licensed under CC BY 4.0.
  2. Journey Through the Years: Knock Shrine History · Knock Shrine
  3. Unveiling of New Apparition Mosaic at Knock Shrine, 29 February 2016 · Irish Catholic Bishops' Conference
  4. Company Information: History · Ireland West Airport
  5. Basilica of Our Lady, Queen of Ireland, Knock illustration: based on a Knock Basilica 16 July 2017 by Sinéad Mallee. 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 2025-01-10. How this page was prepared.