There was a large Royal Navy depot in the village, which was closed in 2007 in Ministry of Defence restructuring.

Llangennech has a strong rugby union team, Llangennech RFC, that feeds many players into Llanelli RFC and then on to the Llanelli Scarlets regional rugby union team.

The town is served by Llangennech railway station on the Heart of Wales Line with trains to Swansea to the south and Shrewsbury to the north.

These include Llangennydd, Llangennich, Llangenardh, Llangennach, Llangenarth, Llangenneth, Llangenyth, Llangennych and Langenardh.

After surrendering the estate back to Symmons in 1806, it was sold to the MP Edward Rose Tunno in 1821 or 1824.

He suffered a stroke at the Mansion and died the same day on 14 January 1856;[5] his son and wife lived there until 1870.

After Tunno's death, Edward Sartoris, Nevill's nephew and MP for Carmarthenshire, received the Llangennech estate.

[6] Llangennech Park House was a country estate in what is now Maes Tŷ Gwyn.

The Welshman reported that the murderer of Sarah Williams, who is believed to be the only victim killed during the riots, was a "named shoemaker of Llangennech".

[12] Though it no longer belongs to the Royal Navy, the site still operates as a contractor for the Ministry of Defence,[citation needed] helping to equip the Bronco All Terrain Tracked Carrier vehicles which were used by the British Army during the war in Afghanistan.

The Troserch Woodlands lie near the Afon Morlais, approximately one mile to the north of the village.

[23] Llangennech is currently represented in the UK Parliament by Nia Griffith MP[24] and in the Welsh Senedd by Lee Waters MS,[25] both under the Llanelli constituency.

[27][28] Llangennech is served by the Heart of Wales line, with train services between Swansea and Shrewsbury.

On 26 August 2020, ten tankers derailed near the village and spilled around 446,000 litres of fuel.

[37][38][39][40] Bryn Seion, a Presbyterian chapel, was the subject of a book written by the local resident and renowned historian Hywel Teifi Edwards.

[citation needed] The village is represented in football by Llangennech AFC in the Carmarthenshire League.

It has three senior sides, all playing in the South Wales Cricket Association's leagues.