San Dionisio is dominated by mestizos, but there are significant native populations in two sections of the municipality, wibuse and Portillo del Jicaro.

[citation needed] The Rio Calico runs through the town from north-west to south-east.

[citation needed] The town is predominantly Catholic, but evangelical churches are springing up everywhere.

There is a Catholic festivity on October 9 to honor Pope Dionysius (San Dionisio).

Like many small towns in Nicaragua, the residents do not receive much support from central government, only getting attention during Political campaigns.