President Andrés Manuel López Obrador announced in 2021 that the former prison would be rehabilitated as the environmental and cultural education center "Muros de Agua-José Revueltas" in honor of the writer who was imprisoned there.

A subtext to the founding of San Blas may have been Gálvez' desire to curtail tax evasion on trade with Asia out of Acapulco, which was controlled by businessmen of Mexico City.

Silver mined in Mexico's northwest was shipped out of San Blas to pay for imports of goods, particularly from Panama, which was flooded with British products that entered through Jamaica on the other side of the isthmus.

Gálvez ordered four new vessels to be built, one of which was the schooner Sonora, later sailed in 1775 by Juan Francisco de la Bodega y Quadra to Alaska.

The climate's stifling humidity and torrential rains from July to October, coupled with extensive mangrove swamps that surrounded the settlement, resulted in San Blas being plagued by clouds of voracious mosquitoes.

San Blas's location was useful and logical, however, because it minimized travel time from Guadalajara and Mexico City without increasing the total distance to the Californias.

In 2021, ejidatarios (farmers) from Jolotemba and nearby communities blocked access to the luxury tourist complex "Limoncitos Hills" owned by Canadian developer Angela Birkenbach.

For about twenty years in the late 18th century, San Blas was one of the busiest ports and shipbuilding centers on the Pacific coast of the Americas, rivaling Acapulco, the eastern terminus of the trans-Pacific Manila galleon convoy.

During the 1900s, San Blas served as the arrival port for thousands of Yaqui men, women and children forcibly removed from their lands and sold into slavery.

The area has an abundance of migratory birds in the surrounding estuaries and lowland palm forests, attracting significant numbers of birders.

[16] The town is also a gateway, along with the nearby village of Matanchen, to the La Tovara park, an extensive mangrove forest and federally protected nature preserve accessible by small boat.

The song was inspired by Rebeca Méndez Jiménez who waited at the pier for 41 years for her fiancé fisherman Manuel to come back from a fishing trip.

The last poem penned by American poet Henry Wadsworth Longfellow was "The Bells of San Blas", included in his book In the Harbor.