The city was established in 1822 on the western margin of the Higuamo River as a result of the immigration of settlers from the eastern part of Santo Domingo.
In the year 1846, at the request of the inhabitants of the place called Macorix, the Conservative Council decided to declare the place as a military post.
At that time, Macoris belonged to the province of Seybo, being made up of three communes: Seybo as the head municipality, Higüey and Samaná.

After 1840, the inhabitants moved from the western margin of the Higuamo to the eastern margin, where the city of San Pedro de Macorís was born, becoming one of the most productive cities of the Dominican Republic.
The population was gradually increasing, dedicating itself to the production of provisions, and the quantities that reached the port of the capital in the boats of Macoris in the years 1868 to 1875, which were baptized there to the old fishermen's abode, were so great.
the name of Macoris de los Plátanos.

In 1852 Macorix is elevated to military port, this time depending on the common Hato Mayor, being Norman Maldonado his first commander in arms.
In 1957 the constitutional mayorship was established and its first mayor was Juan María Pinto.
On October 1, 1856, the first Catholic church was founded by Father Pedro Carrasco Capeller, a native of San José de los Llanos, who came to officiate Mass from Hato Mayor.
The name San Pedro de Macoris was born in 1858 at the suggestion of the presbytery Elías González, who suggested placing Macorís first, "San Pedro" and removing the x so that San Pedro de Macorís would sound, with its patron saint, Pedro Pedro.
This is where the patron saint festivities are born, starting on June 22 and ending on the 29th of the same month
San Pedro de Macoris experienced a significant wave of migration in the late 19th century from Cubans who were fleeing their country's War of Independence.
They brought their extensive sugar cane farming knowledge and contributed to making the sugar industry the most important economic activity in the area.
San Pedro de Macorís reached its peak during the first quarter of the 20th century, when its sugar production enjoyed high prices on the international market as a result of the First World War.
Many Europeans also settled in the city, making it a very cosmopolitan urban center.
Pan American flew its seaplanes in regularly (Eastern Macorís has the privilege of being the first Dominican city to receive seaplanes, in its Higuamo River), at a time when this port enjoyed more commercial activity than the capital city of Santo Domingo.
The next economic boom resulted in the recruitment of a large number of Afro-Caribbean workers from the Lesser Antilles.
These workers and their descendants would soon comprise the majority of the population in the city and are known as the "Cocolos of San Pedro de Macoris."

San Pedro de Macorís pioneered many areas such as the first firefighting corps, the first national baseball championship, the first town to have telephone and telegraph centers, the first racetrack and the first boxing coliseum, among others.
The first sugar factory was founded by Juan Amechazurra, milling for the first time on January 9, 1879.
By 1894 there were many factories in the province that reached a high level of progress.
The rapid industrial development placed the young city among the main ones of the Republic.
The intellectual culture surged at the same pace with schools and the press; among the first newspapers were "Las Novedades", "Boletín", "La Locomotora" and "El Cable."
The city was established in 1822 on the western margin of the Higuamo River as a result of the immigration of settlers from the eastern part of Santo Domingo. In the year 1846, at the request of the inhabitants of the place called Macorix, the Conservative Council decided to declare the place as a military post. At that time, Macoris belonged to the province of Seybo, being made up of three communes: Seybo as the head municipality, Higüey and Samaná.
After 1840, the inhabitants moved from the western margin of the Higuamo to the eastern margin, where the city of San Pedro de Macorís was born, becoming one of the most productive cities of the Dominican Republic. The population was gradually increasing, dedicating itself to the production of provisions, and the quantities that reached the port of the capital in the boats of Macoris in the years 1868 to 1875, which were baptized there to the old fishermen's abode, were so great. the name of Macoris de los Plátanos.
In 1852 Macorix is elevated to military port, this time depending on the common Hato Mayor, being Norman Maldonado his first commander in arms. In 1957 the constitutional mayorship was established and its first mayor was Juan María Pinto. On October 1, 1856, the first Catholic church was founded by Father Pedro Carrasco Capeller, a native of San José de los Llanos, who came to officiate Mass from Hato Mayor. The name San Pedro de Macoris was born in 1858 at the suggestion of the presbytery Elías González, who suggested placing Macorís first, "San Pedro" and removing the x so that San Pedro de Macorís would sound, with its patron saint, Pedro Pedro. This is where the patron saint festivities are born, starting on June 22 and ending on the 29th of the same month
San Pedro de Macoris experienced a significant wave of migration in the late 19th century from Cubans who were fleeing their country's War of Independence. They brought their extensive sugar cane farming knowledge and contributed to making the sugar industry the most important economic activity in the area. San Pedro de Macorís reached its peak during the first quarter of the 20th century, when its sugar production enjoyed high prices on the international market as a result of the First World War. Many Europeans also settled in the city, making it a very cosmopolitan urban center. Pan American flew its seaplanes in regularly (Eastern Macorís has the privilege of being the first Dominican city to receive seaplanes, in its Higuamo River), at a time when this port enjoyed more commercial activity than the capital city of Santo Domingo. The next economic boom resulted in the recruitment of a large number of Afro-Caribbean workers from the Lesser Antilles. These workers and their descendants would soon comprise the majority of the population in the city and are known as the "Cocolos of San Pedro de Macoris."
San Pedro de Macorís pioneered many areas such as the first firefighting corps, the first national baseball championship, the first town to have telephone and telegraph centers, the first racetrack and the first boxing coliseum, among others. The first sugar factory was founded by Juan Amechazurra, milling for the first time on January 9, 1879. By 1894 there were many factories in the province that reached a high level of progress. The rapid industrial development placed the young city among the main ones of the Republic. The intellectual culture surged at the same pace with schools and the press; among the first newspapers were "Las Novedades", "Boletín", "La Locomotora" and "El Cable."
San Pedro de Macorís