Region III (Central Luzon)

PSGC: 030000000
ISO: 03
Regional Centre: San Fernando, City of
Congressional Districts: 21
Provinces: 7
Cities: 13
Municipalities: 117
Barangays: 3,102

September 24, 1972: Region III (Central Luzon) created from Bataan, Bulacan, Nueva Ecija, Pampanga, Tarlac and Zambales with San Fernando, City of, as the regional centre, by Presidential Decree No. 1 as part of the Integrated Reorganisation Plan.
May 17, 2002: Aurora transferred from Region IV (Southern Tagalog) by Executive Order No. 103.

PSGC: 037700000
ISO: AUR
Province Capital: Baler
Area Code: 42
Congressional Districts: 1
Cities: 0
Municipalities: 8
Barangays: 151

1855: El Principe district created from Nueva Ecija.
June 12, 1902: El Principe district annexed by Tayabas.
June 14, 1951: Aurora created as a sub-province of Quezon by Republic Act No. 648.
August 13, 1979: Became a full province by Batas Pambansa No. 7.

PSGC: 030800000
ISO: BAN
Province Capital: Balanga, City of
Area Code: 47
Congressional Districts: 2
Cities: 1
Municipalities: 11
Barangays: 237

~1571: Mariveles district created from Zambales.
1754: Bataan province created from the Mariveles district and Pampanga.
March 10, 1917: Province established by Act No. 2711.

PSGC: 031400000
ISO: BUL
Province Capital: Malolos, City of
Area Code: 44
Congressional Districts: 5
Cities: 3
Municipalities: 21
Barangays: 569

1578: Bulacan province created from Manila.
March 10, 1917: Province established by Act No. 2711.

PSGC: 034900000
ISO: NUE
Province Capital: Palayan City
Area Code: 44
Congressional Districts: 4
Cities: 5
Municipalities: 27
Barangays: 849

1705: Nueva Ecija created as a district of Pampanga from the Kalilaya province.
1818: Created as a province.
March 10, 1917: Province established by Act No. 2711.

PSGC: 035400000
ISO: PAM
Province Capital: San Fernando, City of
Area Code: 45
Congressional Districts: 4
Cities: 2
Municipalities: 20
Barangays: 538

December 11, 1571: Pampanga province created.
March 10, 1917: Province established by Act No. 2711.

PSGC: 036900000
ISO: TAR
Province Capital: Tarlac, City of
Area Code: 45
Congressional Districts: 3
Cities: 1
Municipalities: 17
Barangays: 511

1860: Created as a district of Pampanga.
May 28, 1873: Tarlac created as a province from Pampanga and Pangasinan.
March 10, 1917: Established by Act No. 2711.
June 21, 1969: Officially declared a province by Republic Act No. 5907.

PSGC: 037100000
ISO: ZMB
Province Capital: Iba
Area Code: 47
Congressional Districts: 2
Cities: 1
Municipalities: 13
Barangays: 247

~1572: Zambales created as a district of Pangasinan.
Late 18th Century: Created as a province.
March 10, 1917: Province established by Act No. 2711.