The Ayrshire Post was founded in 1880 as a voice of Liberalism, in direct competition to existing Tory rival the Ayr Advertiser and the now defunct Ayr Observer and the more radical Ayrshire Express.
The paper is currently owned by Scottish & Universal Newspapers, part of the bigger Trinity Mirror Group. It now has the largest circulation of all publications in the Scottish and Universal stable. The sale is the second highest of any weekly paper in Scotland. The Ayrshire Post's editorial headquarters are on Nile Court in Ayr town centre.