Like each of the 78 Municipalities of Puerto Rico, the capital of Puerto Rico, San Juan, Puerto Rico, is subdivided into barrios or in English wards, 18 in number, 8 of which are further subdivided into a total of 72 sub-barrios:

  1. Caimito
  2. Cupey
  3. El Cinco
  4. Gobernador Piñero
  5. Hato Rey Central (4 sub-barrios)
  6. Hato Rey Norte (4 sub-barrios)
  7. Hato Rey Sur (4 sub-barrios)
  8. Monacillo
  9. Monacillo Urbano
  10. Oriente (3 sub-barrios)
  11. Pueblo (6 sub-barrios)
  12. Quebrada Arenas
  13. Sabana Llana Norte
  14. Sabana Llana Sur
  15. San Juan Antiguo (7 sub-barrios)
  16. Santurce (40 sub-barrios)
  17. Tortugo
  18. Universidad (4 sub-barrios)
Barrios of San Juan

On the lowest level of territorial subdivision, each barrio is subdivided into