As of May 1, 2020, the population of Tanudan is 8,746 based on 2020 Census of Population and Housing (2020 CPH). The official count is declared by the President of the Philippines under Proclamation No. 1179 dated July 6, 2021.
The 2020 population of Tanudan is lower by 788 as compared to the population in 2015 which is 9,534 but higher by 217 compared with the population in 2010 with 8,529. (table 1)
Among the eight (8) city/municipalities of the province, the municipality of Tanudan is the least in terms of population size with 8,746 persons, comprising of 3.81 percent of the total population of the province.
Table 1. Population of Tanudan, Kalinga
| Census Year | Census Reference Rate | Population |
| 2010 | May 1, 2010 | 8,529 |
| 2015 | August 1, 2015 | 9,534 |
| 2020 | May 1, 2020 | 8,476 |
From 2015 to 2020, the annual population growth rate of Tanudan is -1.80 percent, higher by 3.94 percent as compared from 2010 to 2015 with 2.14 annual population growth rate. (Table 2).
Table 2. Annual Population Growth Rate: Tanudan, Kalinga
| Reference Period | Annual Population Growth Rate (in percent) |
| 2010-2015 | 2.14 |
| 2015-2020 | -1.80 |
The municipality of Tanudan is composed of 16 barangays. Among the 16 barangays, 10 barangays or 62.50 percent decreased in population as compared to 2015 population and 6 barangays increased. These were barangays Lower Taloctoc, Mabaca, Pangol, Upper Taloctoc, Dupligan and Lay-asan. There was only one (1) barangay of Tanudan that have more than 1000 population in 2020. This was barangay Dupligan with 2,019 persons and there 11 Barangays that have less than 500 population. (Table 3)
Table 3. Population by Barangay: Tanudan, Kalinga
| Barangay | Population | ||
|---|---|---|---|
| 2010 | 2015 | 2020 | |
| Anggacan | 320 | 400 | 259 |
| Babbanoy | 367 | 620 | 326 |
| Dacalan | 401 | 482 | 369 |
| Gaang | 559 | 541 | 457 |
| Lower Mangali | 301 | 286 | 278 |
| Lower Taloctoc | 318 | 351 | 387 |
| Lower Lubo | 632 | 612 | 527 |
| Upper Lubo | 522 | 586 | 353 |
| Mabaca | 801 | 806 | 892 |
| Pangol | 801 | 916 | 974 |
| Poblacion | 485 | 515 | 313 |
| Upper Taloctoc | 370 | 362 | 369 |
| Anggacan Sur | 224 | 281 | 185 |
| Dupligan | 1,405 | 1,798 | 2,019 |
| Lay-asan | 614 | 602 | 757 |
| Mangali Centro | 409 | 376 | 281 |
Among the 16 barangays in the municipality of Tanudan, the largest in terms of population size is Dupligan with 2,019 persons. It was followed by Pangol with 974 persons, Mabaca ranked 3rd with 892 persons, Lay-asan with 757 and Lower Lubo with 527. The combined population of these five barangays accounted for about 59.10 percent of the total population of Tanudan in 2020. (Table 4)
Table 4. Top Five Most Populous Barangays: Tanudan, Kalinga
| Barangay | 2020 Population |
| Dupligan | 2,019 |
| Pangol | 974 |
| Mabaca | 892 |
| Lay-asan | 757 |
| Lower Lubo | 527 |
Barangay Anggacan Sur was the least populous barangay in the municipality of Tanudan and the province of Kalinga as well with 185 persons. Anggacan ranked 2nd most populous in the municipality of Tanudan with 259 followed by Lower Mangali with 278 persons, Mangali Centro with 281 persons, and Poblacion belongs to top five least populous barangays with 313 persons. (Table 5)
Table 5. Top Five Least Populous Barangays: Tanudan, Kalinga
| Barangay | 2020 Population |
| Anggacan Sur | 185 |
| Anggacan | 259 |
| Lower Mangali | 278 |
| Mangali Centro | 281 |
| Poblacion | 313 |
The total land area of Tanudan is 307.55 square kilometers and the population density of Tanudan in 2020 was posted at 28 persons per square kilometer. This represents a decrease of 3 persons per square kilometer in five (5) years time. In 2010, there were about 28 persons in every square kilometer of land in the municipality (Table 6)
Table 6. Population Density: Tanudan, Kalinga
| Census Year |
Population Density
(Persons Per Square Kilometer)
|
| 2010 | 28 |
| 2015 | 31 |
| 2020 | 28 |
The population figures in this report were based on the results of the 2020 CPH. The land areas were based on the 2013 Masterlist of land Areas of Cities and Municipalities provided to the Philippine Statistics Authority (PSA) by the Land Management Bureau (LMB).
