Bauan is politically subdivided into 40 barangays. Barangay San Teodoro was created in 1953 from the sitio of Pook ng Buhangin from Barrio Ilat and the sitio of Cupang from Barrio Gelerang Kawayan. In 1954, the sitio of Jipit in the barrio of San Antonio was converted to the barrio of Sto. Niño, while the sitio of Pook ni Banal in the Barrio of Malaking Pook was converted into the barrio of Pook n
i Banal. The next year, sitio Pinagcurusan in barrio Maricaban and sitio Pinagcurusan in barrio Tingloy were constituted into barrio San Jose, while sitio Pirasan in barrio Payapa was constituted into the barrio of San Juan. In 1956 portions of San Andres and Bolo were separated to form the barrio of San Miguel. The next year, sitio Puting Buhangin of barrio Magalanggalang was converted into barrio Orense. Alagao
Aplaya
As-Is
Bagong Silang
Baguilawa
Balayong
Barangay I (Pob.) Barangay II (Pob.) Barangay III (Pob.) Barangay IV (Pob.) Bolo
Colvo
Cupang
Durungao
Gulibay
Inicbulan
Locloc
Magalang-Galang
Malindig
Manalupang
Manghinao Proper
Manghinao Uno
New Danglayan
Orense
Pitugo
Rizal
Sampaguita
San Agustin
San Andres Proper
San Andres Uno
San Diego
San Miguel
San Pablo
San Pedro
San Roque
San Teodoro
San Vicente
Santa Maria
Santo Domingo
Sinala
