Introduction
County in Ireland "Offaly" redirects here. For other uses, see Offaly (disambiguation). County in Leinster, IrelandCounty Offaly Contae Uíbh FhailíCounty Coat of armsNickname: The Faithful CountyMotto:  Esto Fidelis  (Latin)"Be Faithful"Interactive map of County OffalyCountryIrelandProvinceLeinsterRegionEastern and MidlandEstablished1556County townTullamoreGovernment • Local authorityOffaly County Council • Dáil constituenciesOffaly • EP constituencyMidlands–North-WestArea • Total2,001 km2 (773 sq mi) • Rank18thHighest elevation (Arderin)527 m (1,729 ft)Population (2022) • Total83,150 • Rank24th • Density41.55/km2 (107.6/sq mi)Time zoneUTC±0 (WET) • Summer (DST)UTC+1 (IST)Eircode routing keysR35, R42, R45 (primarily)Telephone area codes046, 057 (primarily)ISO 3166 codeIE-OYVehicle indexmark codeOYWebsiteOfficial website County Offaly (/ˈɒfəli/; Irish: Contae Uíbh Fhailí) is a county in Ireland. It is part of the Eastern and Midland Region and the province of Leinster. It is named after the ancient Kingdom of Uí Failghe. It was formerly known as King's County, in honour of Philip II of Spain, who was at the time King of Ireland by jure uxoris. Offaly County Council is the local authority for the county. The county population was 82,668 at the 2022 census.