The newspaper is published by Trinity Mirror, the same company behind the South Wales Evening Post.

In 2012, Local World acquired South West Wales Publications owner Northcliffe Media from Daily Mail and General Trust.

[4] The Llanelli Star has a sister paper, the Carmarthen Journal.

The two papers have different formats and news content which varies by area.

The Llanelli Star covers the district of Llanelli and the Gwendraeth Valley where the Carmarthen Journal covers the town of Carmarthen and also the Gwendraeth Valley.