The village takes its modern form from the 19th century with a wide area that was formerly the Market Square (and still named so) and a number of townhouses in the Georgian style.

Evidence of its former economic activity exists in the form of a number of ruined mills and accompanying mill-streams in the environs of the village, as well as several large estates.

When a secret oath-bound society known as the Whiteboys, formed in the parish, elements of the Protestant Ascendancy conspired to make him an example to those who questioned or threatened their powers.

[12] Lewis' Topographical Dictionary of 1837 notes Clogheen as being located in the barony of Iffa and Offa West and reported that there were 1,928 inhabitants, a military barracks for the accommodation of two troops of cavalry, an extensive brewery, plus seven flour mills in the town and neighbourhood.

[15] The problems reflected a general upheaval in Irish rural society in which the local population experienced net immigration for the first time in its modern history.