Hato Mayor is a province of the Dominican Republic. The province was split from El Seibo in 1984. The following is a sortable table of the municipalities and municipal districts with population figures as of the 2014 estimate. Urban population are those living in the seats of municipalities or of municipal districts. Rural population are those living in the districts …Hato Mayor is a province of the Dominican Republic. The province was split from El Seibo in 1984. The following is a sortable table of the municipalities and municipal districts with population figures as of the 2014 estimate. Urban population are those living in the seats of municipalities or of municipal districts. Rural population are those living in the districts and neighborhoods outside them. The population figures are from the 2014 population estimate.