County Mayo Major Market Towns Mid 19th Century:
| Ballaghadireen (Ballaghaderreen) (B) (Kilcolman Civil Parish) (Kilcolman and Castlemore (A) below it were transferred to County Roscommon in 1898) |
| Ballina (48) (Kilmoremoy Civil Parish) |
| Ballinrobe (11) (Ballinrobe Civil Parish) |
| Castlebar (5) (Aglish Civil Parish) |
| Clare (a.k.a. Claremorris) (Kilcolman Civil Parish) |
| Crossmolina (24) (Crossmolina Civil Parish) |
| Foxford (67) (Toomore Civil Parish) |
| Killala (39) (Killala Civil Parish) |
| Newport (21) (Burrishoole Civil Parish) |
| Swinford (33) (Kilconduff Civil Parish) |
| Westport (59) Oughaval Civil Parish) |
I referred to the Book by Samuel Lewis: "Lewis's Atlas, Comprising the Counties of Ireland and General Map of the Kingdom" to identify the placement of the market towns of County Mayo on this map. (Lewis, 1837, 2009).