Sligo ( SLY-goh; Irish: Sligeach [ˈʃlʲɪɟəx], meaning 'abounding in shells') is a coastal seaport and the county town of County Sligo, Ireland, within the western province of Connacht. With a population of approximately 20,000 in 2016, it is the second largest urban centre in the West of Ireland, with only Galway being larger.