County Mayo

County Mayo Contae Mhaigh Eo (Irish)
County
Coat of arms
Nicknames:  The Maritime County, The Yew County (Others)
Motto(s):  Dia is Muire Linn  (Irish) "God and Mary be with us"
Country	Ireland
Province	Connacht
Region	Northern and Western
Established	c. 1570[1]
County town	Castlebar
Government
• Local authority	Mayo County Council
• Dáil constituencies	Mayo Galway West
• EP constituency	Midlands–North-West
Area [2]
• Total	5,588 km2 (2,158 sq mi)
• Rank	3rd
Population  (2022)[3]
• Total	137,231
• Rank	18th
• Density	25/km2 (64/sq mi)
Time zone	UTC±0 (WET)
• Summer (DST)	UTC+1 (IST)
Eircode routing keys	F12, F23, F26, F28, F31, F35 (primarily)
Telephone area codes	093–098 (primarily)
Vehicle index mark code	MO
Website	Official website

County Mayo (/ˈmeɪoʊ/;^[4] from Irish Maigh Eo, Contae Mhaigh Eo, meaning 'Plain of the yew trees') is a county in Ireland. In the West of Ireland, in the province of Connacht, it is named after the village of Mayo, now generally known as Mayo Abbey. Mayo County Council is the local authority. The population was 137,231 at the 2022 census.^[3] The boundaries of the county, which was formed in 1585, reflect the Mac William Íochtar lordship at that time.