Legislative districts of Negros Oriental

Negros Oriental was divided into two congressional districts from 1907 to 1972, it was redistricted into three congressional districts in 1986. It was part of the representation of Region VII from 1978 to 1984, and from 1984 to 1986 it elected 3 assemblymen at-large. Siquijor was last represented as part of the province's second district in 1972. == 1st District ==

• Cities: Canlaon, Guihulngan (became city 2007) • Municipalities: Ayungon, Bindoy, Jimalalud, La Libertad, Manjuyod, Tayasan, Vallehermoso • Population (2020): 445,970 1907–1972 • Municipalities: Amlan (Ayuquitan Nuevo), Bais (became city 1968), Dumaguete (became city 1948), Guihulngan, Tanjay, Tayasan, Manjuyod (re-established 1908), Jimalalud (re-established 1910), Sibulan (re-established 1910), Vallehermoso (re-established 1913), La Libertad (re-established 1918), Canlaon (established 1946, became city 1961), Bindoy (Payabon) (established 1949), Pamplona (established 1959), San Jose (established 1955), Mabinay (established 1959) == 2nd District ==

• City: Bais, Dumaguete, Tanjay (became city 2001) • Municipalities: Amlan, Mabinay, Pamplona, San Jose, Sibulan • Population (2020): 535,632 1907–1972 • Municipalities: Bacong, Bayawan (Tolong Nuevo), Dauin, Larena, Lazi, Siaton, Siquijor, Valencia (Nueva Valencia, later Luzuriaga), Zamboanguita (established 1908), San Juan (re-established 1908), Maria (re-established 1909), Enrique Villanueva (Talingting) (established 1924), Santa Catalina (Tolong Viejo) (re-established 1947), Basay (established 1968) Notes == 3rd District ==

• City: Bayawan (became city 2000) • Municipalities: Bacong, Basay, Dauin, Santa Catalina, Siaton, Valencia, Zamboanguita • Population (2020): 451,388 == At-Large (defunct) ==

Malolos Congress Notes 1943-1944 • Includes present-day Siquijor 1984-1986 == See also ==