Morlaix originated in the 12th century, developing around a castle guarding the head of its navigable estuary, quickly becoming a strategically important port in Brittany.

The town is uniquely situated in a deep, narrow valley at the confluence of the Queffleuth and Jarlot rivers, which form the Morlaix River (estuary) flowing into the English Channel.

Dominating the town's skyline, the impressive Morlaix Viaduct, a double-deck railway bridge constructed between 1861 and 1863, stands as a remarkable 19th-century engineering achievement.

From the Middle Ages through the Renaissance, Morlaix flourished as a vital port for the lucrative linen trade, exporting significant quantities of canvas and sailcloth to England and northern Europe.

The historic town center boasts a collection of distinctive 15th and 16th-century timber-framed houses, notably the "maisons à pondalez" featuring internal galleries and courtyards, reflecting its past wealth.

Morlaix maintains a strong connection to its Breton cultural heritage, evident in its local traditions, the occasional use of the Breton language, and the vibrant celebration of traditional music and dance.

The population of the Morlaix commune stood at approximately 14,769 residents in 2020, representing a gradual decline from its mid-20th-century peak, a trend seen in many rural French towns.

Today, Morlaix's economy is diversified, relying on public services, healthcare, education, retail, light manufacturing, and a growing tourism sector capitalizing on its heritage and coastal proximity.

The town played a significant role during the tumultuous Wars of the League in the 16th century and is historically linked to Duchess Anne of Brittany, a powerful figure in the region's autonomy.

The "Fest Noz," a traditional Breton night festival involving communal dance and live music, is a regular and cherished cultural event that celebrates Morlaix's deep Breton roots.

The "Maison de la Duchesse Anne," an exquisitely preserved 16th-century Renaissance mansion, showcases intricate stone carvings and architectural details from Morlaix's golden age.

Its natural, deep-water estuary offered a well-protected harbor, essential for its historical maritime trade and fishing industries, directly influencing the town's growth and prosperity for centuries.

While not a UNESCO World Heritage site itself, Morlaix is located near the Parc Naturel Régional d'Armorique, a protected area recognized for its significant natural and cultural landscapes.

Morlaix hosts a branch of the Université de Bretagne Occidentale (UBO), contributing to regional higher education and fostering some specialized research initiatives within the area.

As a subprefecture of the Finistère department, Morlaix serves as an important administrative and judicial hub, overseeing a broad rural and coastal district within western Brittany.