The bishop is Joseph Trân Xuân Tiéu, since 2003.

The creation of the diocese in present form was declared November 24, 1960.

The diocese covers an area of 10,243 km², and is a suffragan diocese of the Archdiocese of Ho Chi Minh city.

By 2016, the diocese of Long Xuyên had about 247,000 believers (5.9% of the population), 275 priests and 186 parishes.

This article on a Roman Catholic diocese in Vietnam is a stub.