Release Date :
Reference Number :
2016-102
First LD of Caloocan City is the country’s most populous LD; Lone LD of Batanes is least populous
- Of the country’s 238 legislative districts (LDs), the First LD of Caloocan City was the biggest in terms of population size, with 1.19 million persons, based on the results of the 2015 Census of Population (POPCEN 2015). It was followed by the Second LD of Rizal (1.07 million persons) and the First LD of Rizal (1.04 million persons).
TABLE 1. Top Ten Most Populous Legislative Districts: 2015
| Rank | Legislative District | Population |
| 1 | First Legislative District of Caloocan City | 1,193,419 |
| 2 | Second Legislative District of Rizal | 1,070,852 |
| 3 | First Legislative District of Rizal | 1,036,989 |
| 4 | Second Legislative District of Laguna | 937,382 |
| 5 | First Legislative District of South Cotabato | 856,536 |
| 6 | First Legislative District of Maguindanao | 821,475 |
| 7 | First Legislative District of Pampanga | 775,580 |
| 8 | Lone Legislative District of the City of Pasig | 755,300 |
| 9 | Fourth Legislative District of Bulacan | 746,699 |
| 10 | Sixth Legislative District of Cavite | 733,853 |
- The Lone LD of Batanes was the least populous LD with 17,246 persons, followed by the Lone LD of Camiguin (88,478 persons) and the Lone LD of Siquijor (95,984 persons). Except for the Lone LD of the City of San Juan in the NCR and the First LD of Surigao del Norte in Region XIII-Caraga, the rest of the ten least populous LDs are small provinces composed of only one LD.
TABLE 2. Ten Least Populous Legislative Districts: 2015
| Rank | Legislative District | Population |
| 1 | Lone Legislative District of Batanes | 17,246 |
| 2 | Lone Legislative District of Camiguin | 88,478 |
| 3 | Lone Legislative District of Siquijor | 95,984 |
| 4 | First Legislative District of Surigao del Norte | 116,587 |
| 5 | Lone Legislative District of Apayao | 119,184 |
| 6 | Lone Legislative District of the City of San Juan | 122,180 |
| 7 | Lone Legislative District of Dinagat Islands | 127,152 |
| 8 | Lone Legislative District of Mountain Province | 154,590 |
| 9 | Lone Legislative District of Biliran | 171,612 |
| 10 | Lone Legislative District of Guimaras | 174,613 |
Six out of 10 most populous and 10 least populous LDs in cities are in the NCR
- The First LD of Caloocan City was the most populous LD in cities with 1.19 million persons. It was followed by the Lone LD of the City of Pasig (755,300 persons) and the Second LD of Quezon City (688,773 persons). Three other LDs in the NCR; two in Davao City; and one each in Bacolod City and in City of San Jose del Monte comprise the rest of the ten most populous LDs in cities. Except for the City of San Jose del Monte, which is a component city in the province of Bulacan, the top ten most populous LDs in cities are all in highly urbanized cities (HUCs).
TABLE 3. Top Ten Most Populous Legislative Districts in Cities: 2015
| Rank | Legislative District | Population |
| 1 | First Legislative District of Caloocan City | 1,193,419 |
| 2 | Lone Legislative District of the City of Pasig | 755,300 |
| 3 | Second Legislative District of Quezon City | 688,773 |
| 4 | First Legislative District of Davao City | 592,736 |
| 5 | Second Legislative District of Davao City | 592,250 |
| 6 | Lone Legislative District of the City of Las Piñas | 588,894 |
| 7 | Lone Legislative District of the City of San Jose del Monte (Bulacan) | 574,089 |
| 8 | Lone Legislative District of Bacolod City | 561,875 |
| 9 | Fifth Legislative District of Quezon City | 535,798 |
| 10 | Sixth Legislative District of Quezon City | 531,592 |
- Among the LDs in cities, the smallest in terms of population size was the Lone LD of the City of San Juan with 122,180 persons, followed by the First LD of the City of Marikina (178,875 persons) and the Second LD of the City of Manila (215,457 persons). The rest of the ten least populous LDs in cities are found in the NCR.
TABLE 4. Ten Least Populous Legislative Districts in Cities: 2015
| Rank | Legislative District | Population |
| 1 | Lone Legislative District of the City of San Juan | 122,180 |
| 2 | First Legislative District of the City of Marikina | 178,875 |
| 3 | Second Legislative District of the City of Manila | 215,457 |
| 4 | Third Legislative District of the City of Manila | 221,780 |
| 5 | First Legislative District of the City of Makati | 242,655 |
| 6 | Lone Legislative District of the City of Navotas | 249,463 |
| 7 | First Legislative District of the City of Parañaque | 258,210 |
| 8 | Fourth Legislative District of the City of Manila | 265,046 |
| 9 | Second Legislative District of the City of Marikina | 271,866 |
| 10 | Sixth Legislative District of the City of Manila | 295,245 |
Cavite is the biggest province in terms of population size and number of LDs
- With seven LDs each, Cavite and Cebu (excluding Cebu City and Lapu-Lapu City, but including Mandaue City) led the country’s 81 provinces with the most number of LDs. The aggregate population of the seven LDs comprising Cavite was 3.68 million, while the combined population of the seven LDs comprising Cebu (excluding Cebu City and Lapu-Lapu City, but including Mandaue City) totalled to 3.30 million. Table 5 presents the aggregate population of the LDs in the provinces with five or more LDs.
TABLE 5. Population of the Provinces with Five or More Legislative Districts
| Province | Population | Number of Legislative Districts 1 |
| Cavite | 3,678,301 | 7 |
| Cebu 2 | 3,301,636 | 7 |
| Pangasinan | 2,956,726 | 6 |
| Batangas | 2,694,335 | 6 |
| Negros Occidental 3 | 2,497,261 | 6 |
| Camarines Sur | 1,952,544 | 5 |
| Iloilo 4 | 1,936,423 | 5 |
| Leyte 5 | 1,966,768 | 5 |
1 As of the 9 May 2016 National and Local Elections
2 Excluding Cebu City, which has two LDs and Lapu-Lapu City, which constitutes one LD; but including Mandaue City, which is part of the Sixth LD of Cebu
3 Excluding Bacolod City, which constitute one LD
4 Excluding Iloilo City, which constitutes one LD
5 Including Tacloban City, which is part of the First LD of Leyte
QC and Manila have the biggest population and most number of LDs among the HUCs
- Twenty-five of the country’s 33 HUCs are represented by at least one representative in the Congress. Quezon City and the City of Manila, with six LDs each, have the most number of LDs among the HUCs. The population of the six LDs comprising Quezon City was 2.94 million. On the other hand, the combined population of the six LDs in the City of Manila totalled to 1.78 million. Presented in Table 6 are the population of Davao City, which has three LDs; eight HUCs, which have two LDs each; and 14 HUCs, which have one LD each.
TABLE 6. Population of the Highly Urbanized Cities Which Comprise at Least One Legislative District
| Highly Urbanized City | Population | Number of Legislative Districts 1 |
| Quezon City | 2,936,116 | 6 |
| City of Manila | 1,780,148 | 6 |
| Davao City | 1,632,991 | 3 |
| Caloocan City | 1,583,978 | 2 |
| Cebu City | 922,611 | 2 |
| Zamboanga City | 861,799 | 2 |
| Cagayan de Oro City | 675,950 | 2 |
| City of Parañaque | 665,822 | 2 |
| City of Valenzuela | 620,422 | 2 |
| City of Makati | 582,602 | 2 |
| City of Marikina | 450,741 | 2 |
| City of Taguig | 804,915 a | 1 |
| City of Pasig | 755,300 | 1 |
| City of Las Piñas | 588,894 | 1 |
| Bacolod City | 561,875 | 1 |
| City of Muntinlupa | 504,509 | 1 |
| Iloilo City | 447,992 | 1 |
| Pasay City | 416,522 | 1 |
| Lapu-Lapu City | 408,112 | 1 |
| City of Mandaluyong | 386,276 | 1 |
| City of Malabon | 365,525 | 1 |
| Baguio City | 345,366 | 1 |
| Iligan City | 342,618 | 1 |
| City of Navotas | 249,463 | 1 |
| City of San Juan | 122,180 | 1 |
1 As of the 9 May 2016 National and Local Elections
a Includes 364,100 persons who reside in the Lone LD of Taguig City-Municipality of Pateros
