The town suffered damages in the flash flood of May 25, 2004, which killed many citizens during the night and washed away hundreds of homes.

General Paul Decayette, the Conde de Jimani and member of the Court of Faustin Soulouque, invades through the north.

After the independence of 1844 the earliest inhabitants of Jimaní came from various communities of the southwest, such as Neiba, Duvergé, El Estero, Las Salinas, Azua de Compostela, Santa Cruz de Barahona, and Haitian immigrants from the mountains that married or had common-law marriages with Dominicans, forming families in the most populous neighborhood of the community, known as Jimaní Viejo.

Lying in a valley in the rain shadow of the northeast trade winds, Jimaní has a hot semi-arid climate with relatively constant temperatures throughout the course of the year.

[citation needed] Jimaní has a popular duty-free open-air marketplace with Haiti that is also visited by people from adjoining towns and even from distant regions of the country.

The customs zone of the border is called "The Door" and it is visited by foreign tourists that come to observe the dynamics of the business and intercultural and interracial relation between Dominicans and Haitians.

The majority of the Jimanisenses prefer to seek medical attention in the Regional University Hospital Jaime Mota of Barahona.

As a historic-cultural monument, Jimaní conserves intact and conditioned the "Mansion of Trujillo", one of many the dictator built in the border region, although he never spent the night in this particular one.