In 1990 the total population of the municipality was 14,665, a growth of almost 2.20% over 1980 when the total population was 11,797. the 1995 census showed the population of the municipality had increased to 17,732, an average annual growth  rate of 3.871%. 

        By 2010 the total population is projected to reach 31,345, an average annual growth rate from 1995 of 4.25%. Althoughthe population growth is expected to continue to this trend of high rates, it seems very high compared to earlier years. 

        Urban population in 1995 was 3,119 and is projected to reach 5,454 by 2010, a growth of almost 57.19% or an average annual growth of 5.72%. 

        The Municipality of Tampilisan has a total population of 17,732 and 3,119 or 17.59 percent reside in the urban area while 14,613 or 82.41% are staying in the rural areas. This urbanization level indicates that the municipality is still predominantly rural. 

        The Poblacion is the most populated barangay within the municipality. Of the total population, 17.59% or 3,119 are residing in the Poblacion area. this is followed by Barangays Situbo, Galingon and Lawaan with 6.92%, 6.66% and 6.50% respectively. 

        At present, the Municipality of Tampilsan has a gross density of 1.05 persons per hectare. the Poblacion is the most densely populated among the barangays with 2.72 persons per hectare. This is followed by Barangays Camul, Tininggaan and Molos with 1.70, 1.60, and 1.36  persons per hectare respectively. 

        According to the National Statistics Office, sex and age composition are the most fundamental of the attributes of the population structure. Changes in the structure directly affect fertility and mobility levels, social welfare and economic development. 

        The Municipality of Tampilisan is composed of the younger population (0-14), productive population (15-64) and the older age group (65 and over). majority of the resident in the Municipality are productive or working population with a number of 9,594 representing 54.11% of the total population, younger population with a number of 7,717 representing 43.52% and old age group with a number of 421 representing 2.37% of the total population respectively. 

        The 1995 census of population registered a total of 9,213 male population is slightly higher as compared to the female population. This indicates a sex ratio of 108:100. 

        Marital status of both sexes proportion, married (50.83%) is higher than single (45.73%) while 2.74% widowed, 0.41% separated, .20% common-law or live-in and 0.09% did not reveal their marital status. Among the marital status of male, 25.80% single, 25.38% married, 0.92% widowed, 0.22% separated or divorced., 0.10% common-law/live-in and 0.04 % is unknown,. Foe female proportion, married  (25.45%) is higher than single (19.94%) while 1.81% widowed, 0.10% separated or divorced, 0.10% common-law/live-in and 0.05% is unknown. 

Literacy and Education

         The literacy rate of Tampilisan is estimated at 88.49% which is higher compared to the provincial rate of 87%. More than half of 80.09% of the population five years old and over have completed at least a year in elementary education. Of the total household population 5 years old and over 67.67% have at least attended either first to seventh grade. About 18.40% have gone to secondary school, 0.89% have attended college and 1.53% have completed academic degrees. 

        The economic and social stability of any given area is largely dependent on the employment of its working age group. The Housing and Land Use Regulatory Board  defines the productive or working age group as those belonging to the age bracket 15-64 years old (Demographic Sectoral Guidelines, HLURB). 

        Labor force refers to the economically active population 15 years old and over who are either employed or unemployed. Per computation, the current labor force is estimated to reach 6,563 by the year 2000 and further increase to 9,594 by the end of  the planning period.