In 2004, the Catholic population, proportionately the largest in Scotland and second largest in Great Britain, was 165,100 from a total population of 633,000 (26.1%). In 2012 the diocese was served by 65 parish priests, 7 assistant priests and 13 deacons in across its 74 parishes. There are currently 35 retired priests from the diocese and 4 who reside in parishes in the diocese. The area of the diocese is .
The following is a list of the Bishops of Motherwell:
There are currently 75 parishes and 74 churches in the Diocese which are served by 72 priests and 13 deacons.
Father Krysztof Garwolinski, administrator of St Patrick's, Wishaw is chaplain to the Polish community.
Father Joseph Vembadamthara is chaplain to the Syro Malabar Community and is an assistant priest at St Cuthbert's, Hamilton.
In 2011 many priests retired, meaning big changes in the diocese. The most notable retirement was of Canon Noel Provost Carey who had served as parish priest of the cathedral for 30 years and as provost of the diocese for many of them, with Canon Thomas Millar (made Canon in December 2011) taking over charge of the cathedral in June 2011. Father Francis McGachey replaced Fr Millar as parish priest of St Francis Carfin and Carfin Grotto.
Other retirements included: Canon William O'Sullivan (St Barbara's Muirhead), Fr Brian Logue (St Kevin's Bargeddie), Fr Leo Muldoon (St Peter's Hamilton), Fr James O'Hara (St Mark's Rutherglen), Canon Timothy Brosnan (St Gerard's Bellshill), Canon Andrew Reen (Sacred Heart, Bellshill) and Canon Michael Ryan (St Bride's East Kilbride).
Canon Niall Hayes (St John Bosco's New Stevenston), Mgr Michael Conway (St Ignatius' Wishaw), Father John Farrell (St Patrick's Strathaven), Father Damian Murphy (St Paul's Hamilton) Canon John Healy (St Serf's Airdrie), Canon Michael Walsh (St Aloysius' Chapelhall) and Father Vivian Hayes (St Francis of Assisi Baillieston) all retired in 2012. Canon Henry Allison was also due to retire as parish priest of St Anthony's Rutherglen but died on 3 January.
Canon Humphrey O'Mahony (Corpus Christi Calderbank and Sacred Heart Salsburgh) retired in October 2013.
There were two ordinations to the priesthood in the Diocese in 2011, the first ordinations in the diocese since 2005.
Father Michael Kane was ordained in St John's Uddingston and Father Liam O'Connor in St Barbara's Muirhead.
There were also two men ordained to the Permanent Deaconate in 2011.
Mr John McGarry who was ordained in St Bride's East Kilbride and now serves there and Mr Mario Vannini who was ordained in Our Lady and Saint Anne's Hamilton and now serves in both St Ninian's and St Cuthbert's Hamilton.
Mr Richard Haggarty was ordained for the diocese in early 2012 and serves in St John the Baptist Uddingston.
In September 2012 another two men were ordained deacons, both Mr Henry McKenna at St Patrick's Shotts and Mr William McMillan in St Benedict's Easterhouse who will serve St Columbkille's Rutherglen.
Fr Brian Lamb is the Vocations Director (Priests) and Fr James Grant is Vocations Director (Deacons).
On Wednesday 24 July 2013, Mgr Leo Cushley+, a priest of the diocese of Motherwell was appointed the Archbishop of St Andrew's and Edinburgh. Mgr Cushley was ordained in 1985 by Bishop Devine in St John the Baptist Church, Uddingston before serving in the Cathedral, St Serf's, Airdrie and St Aidan's, Wishaw. Since 1992 he has been a diplomat for the Vatican and held the post as head of the English-language section of the Vatican's Secretariat of State.
The 75 Parishes in the Diocese are spilt in 9 deaneries.
# Airdrie+ Deanery - :Dean Rev T Trench
# Central Deanery - :Dean Rev J Morris
# Coatbridge+ Deanery - :Dean Very Rev W Canon Dunnachie
# East Kilbride+ Deanery - :Dean Rev William Nolan (Interm)
# Hamilton+ Deanery - :Dean Rt Rev Mgr T Canon O'Hare
# Motherwell+ Deanery - :Dean Rt Rev Mgr T Canon Millar
# Northern Deanery - :Dean Rt Rev Mgr J Canon McIntyre
# Rutherglen+ Deanery - :Dean Rev P Morton
# Wishaw+ Deanery - :Dean Rev H Kelly.
Due to a shortage in priests, a number of parishes have began to share parish priests including, Larkhall (St Mary's), Blackwood (St John's), Hamilton (St Ninian's, St Cuthbert's, St Mary's and St Paul's), Motherwell (Cathedral and St Luke's), Coatbridge (St Stephen's and St Bernard's), Holytown (Christ the King), New Stevenston (St John Bosco's), Airdrie (St Margaret's and St Serf's), Baillieston (St Bridget's and St Francis of Assisi'), Bellshill (Sacred Heart and St Gerard's), Cambuslang (St Bride's and St Cadoc's Halfway).
There are 11 priests and 1 deacon who serve as school chaplains to the high schools in the diocese.
There is also a chaplain to the main hospitals in the diocese, Monklands(Fr Colin Hughes), Wishaw(Fr Michael Brown) and Hairmyres(Fr Liam O'Connor).
Our Lady of Good Aid Cathedral was first built in 1900 and became the cathedral of the new diocese of Motherwell in 1948. The current Cathedral Administrator is Mgr Thomas Canon Millar. The parish of the cathedral was linked with the parish of St Luke's Motherwell in 2011.
:Monsignor Thomas Canon O'Hare
:Monsignor Thomas Canon Millar
:Very Rev. James Foley
:Very Rev. Edward Glackin
:Very Rev. Joseph Clements
:Very Rev. Cornelius O'Leary
:Monsignor John Canon McIntyre
:Very Rev. William Dunnachie
:Very Rev. Denis Keane
:Very Rev. Patrick McGovern
:Very Rev. Herbert Flack
:Very Rev. Kieran O'Farrell
:Very Rev. Patrick Moss
:Very Rev. Patrick O'Hare
:Very Rev. Patrick O'Sullivan
:Very Rev. Thomas Gibbons
:Very Rev. Timothy Brosnan
:Very Rev. Michael Ryan
:Very Rev. Noel Carey
:Very Rev. Andrew Reen
:Very Rev. William O'Sullivan
:Very Rev. Niall Hayes
:Very Rev. John B Healy
:Very Rev. Michael Walsh
:Very Rev. Humphrey O'Mahony