Doohamlet is a village situated in the very centre of Co Monaghan. It is located on the regional road R183 between Castleblayney and Ballybay. It forms the southern tip of the Parish of Clontibret. The district consists of the village and approximately 30 townlands.
Within the district of Doohamlet there are approximately 325 households, with around 1,000 people living in the area.
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The irish translations of our townland names give a great sense of our local heritage;
| Townland Name | Irish Name | Meaning |
| Brackagh | Brocach | A Badger Warren |
| Clare Oghill | Clar Eocaill | Plain of the Yew Wood |
| Clonaneor | Cluain an Oir | Lawn of the Gold |
| Coolmannon | Cul Manain | Mannins Back(of a hill) |
| Corderryduff | Cor a Doire Dubh | Hill of the Derry or Oak Wood(Black) |
| Corderrybane | Cor a Doire Ban | Hill of the Derry(White) |
| Cordevlis | Cor a Duibhlis | Hill of the Black Fort |
| Corlagan-South | Cor Lagain | Hill of the Hollow |
| Corlealackagh | Cor Liath Leacach | Grey Hill of the Flags |
| Corleanamaddy | Cor Liath naMadadh | Grey Hill of the Dogs |
| Cornamuckla | Corn a Mucladh | Hill of the Piggeries |
| Corrakeen | Corra Caoin | Beautiful Weir |
| Corrinshigo | Cor Fuinseaga | Hill of the Ash |
| Corryloan | Corr Ui Luain | O Loan’s(or Lambs) Hill |
| Crinkill | Crioc Coill | Withered Wood |
| Dernaglug | Doire na G-clog | Oak Wood of the Bells |
| Derryisland | Doire Eibhlin | Evlin’s Derry(or Oak Wood) |
| Devlin | Duibhlin | Black Pool |
| Doohamlet | Dubh-Thamalacht | Black Plague Grave |
| Garradevlin | Gardha Dobailean | Devlin’s Garden |
| Grig | Creid | A Rock |
| Killycrum | Coille Croim | Stopped Wood |
| Modeese | Maga Dise | Plain of the Two |
| Muldrumman | Mullac Dromain | Summit of the Ridges |
| Oghill | Eocaill | Yew Wood |
| Rausker | Ramhscair | Unknown |
| Rossollus | Ros Solais | Wood of the Light |
| Tattyreagh(South) | Taite Riach | Swarthy Tate |
| Tonyglassan | Tonnaidh Glasain | Glassan’s Mound |
| Tonyscallan | Tonnaidh Scallain | Scallan’s Mound |
| Toome | Tuam | A Mound |
Note: In the townland of Doohamlet there are the 3 estates with Irish names:
Cois Locha-meaning near to/beside the Lake.
Cois Cill-meaning near to/beside the Church.
Cois Carraig-meaning near to/beside the Rock.
A quick glance at the placenames reveals that about one third of them begin with ‘Cor’ – ‘A Hill’ which reflects the impact of the physical landscape in determining placenames. Only part of Corlealackagh is regarded as belonging to Doohamlet.
