[3] At the 2011 census, Llangefni's population was 5,116, making it the second-largest town in the county and the largest on the island.

Its attractions include the Oriel Ynys Môn museum, which details the history of Anglesey and houses collections of the painters Kyffin Williams and Charles Tunnicliffe.

In the west of the town is a large secondary school, Ysgol Gyfun Llangefni (Llangefni Comprehensive School), and in the north a Victorian parish church, St Cyngar's, set in a wooded riverside location called the Dingle.

Llangefni is a commercial and farming town in Anglesey and once hosted the largest cattle market on the island.

Since then, there have been proposals to convert the line into a multi-purpose path at a cost estimated at £10 million pounds.

There are frequent buses to the larger settlements of Bangor and Holyhead as well as to the smaller towns of Amlwch and Beaumaris.

Llangefni is home to the headquarters of large builders merchant chain Huws Gray.

[13][14] The original Anglesey County Council was based at Llangefni Shire Hall from 1899 until 1974.