 |
| * Includes Uyugan in 1903. |
 |
| Highlights |
| Demographic Characteristics of Ivana |
| The Barangays - More than four out of five Ivanians or 84% of the population live in the town proper that comprises the barangays of Radiwan, Salagao and Tuhel. Median Age - In 1995, the median age in Ivana was 23.3 years. Because of a higher life expectancy, the median age of Ivana women was greater than that of Ivana men by 3.6 years, 25.1 years and 21.5 years, respectively. Age Structure - While the median age shows the |
| aging of the population, a more detailed picture may be obtained by looking at age groups. A useful breakdown distinguishes between persons aged under 15 (children), those 15-64 (working age population) and those 65 and over (elderly). |
| In 1995, children accounted for 37.3% of the total population of Ivana compared to 37.8 for Batanes. Working age population accounted for 53.1% while the proportion of persons aged 65 and over was 9.6%. A greater proportion of women than of men were aged 65 and over, 11.1% and 8%, respectively. The major difference between the figures for men and women in this age group was primarily because of higher male mortality. Dependency Ratio - The various dependency ratios (for children, for the aged, and the total |
| ratio) also serve as useful indicators since they provide information on the economic burden that is borne by the adult population. Ivana's total dependency ratio (ratio of the sum of those aged 0-14 and those 65 and over to those 15-64) was 88.2% in 1995. A breakdown of the total dependency ratio shows that the child dependency ratio was 70.2% and the elderly was 18%. Sex Ratio - In 1995, Ivana's sex ratio (number of males per 100 females) was 96.2% compared to 102.6 for Batanes. On the masculinity ratio of the elderly, Ivana has 69.1% compared to 79% for Batanes. Marital Status - In 1995, the proportion of single people was 46.5% of the population. The percentage of married people and widowed persons was 44.9% and 7.4%, respectively. As of the 1995 Census, there were four separated/divorced people in Ivana. |
| CENSUS POPULATION, IVANA, BATANES |
| 0.0 |
| Thousands |
| 1903* |
| 0.5 |
| 1.5 |
| 2.0 |
| 2.5 |
| 1918 |
| 1939 |
| 1948 |
| 1960 |
| 1970 |
| 1975 |
| 1980 |
| 1990 |
| 1995 |
| 2000 |
| Source: National Statistics Office |
| 1.9 |
| 0.9 |
| 1.0 |
| 1.1 |
| 1.0 |
| 1.0 |
| 0.9 |
| 1.0 |
| 1.2 |
| 1.0 |
| 1.3 |
| 1.0 |
| The other municipalities: The proportion of the population who attended or completed elementary education was highest in Sabtang (45.9%) and the lowest in Basco (30.8%), while the proportion of those who reached or completed high school was highest in Itbayat (36%) and lowest in Basco (26.1%). In contrast, the proportion for those who attended or completed post-secondary education was highest in Basco (34.5%) and the lowest in Itbayat (12.4%). The proportion of bachelor's degree holders or higher was highest in Basco (14.1%) and the lowest in Itbayat (4.5%). In the other muncipalities, the proportion was 10.8% in Ivana, 10.7% in Uyugan, 8.1% in Mahatao and 5.5% in Sabtang. In Sabtang, post-graduates represented 2.7% of the population aged 5 and over, the highest of any municipality. Elsewhere, the proportion ranges from 2.1% in Ivana to 0.3% in Itbayat. |
| Bachelor's degree holders highest in Basco |
| Post-graduates highest in Sabtang |
| Educational attainment - In 1995, 36 per cent of Ivana's household population aged 5 and over attended or completed elementary education. On the other hand, 26.8 per cent had reached or completed high school while 27.1 per cent had attended or graduated from university or other post-secondary institutions. Of the post-secondary graduates, 96 were university graduates with a bachelor's degree or higher. These university graduates represented 10.7 per cent of the population aged 5 and over. Of these, post-graduates accounted for 2.1 per cent. |
 |
| CENSUS POPULATION, IVANA, BATANES, 2000 |
| Source: National Statistics Office |
| Radiwan 384 29.7% |
| San Vicente 203 15.7% |
| Tuhel 329 25.4% |
| Salagao 377 29.2% |
 |
| POPULATION BY EDUCATIONAL ATTAINMENT, IVANA, BATANES |
| Source: National Statistics Office |
| FEMALE |
| MALE |
| No Grade |
| Pre-School |
| Elementary |
| High School |
| Post-Secondary |
| College Undergraduate |
| Academic Degree Holder |
| Post-Baccalaureate |
| 39.2% |
| 24.5% |
| 4.9% |
| 9.1% |
| 4.5% |
| 6% |
| 3.1% |
| 5.7% |
| 3.8% |
| 8.1% |
| 7.7% |
| 11.5% |
| 29.2% |
| 32.8% |
| 1.1% |
| 8.7% |
| The Population - According to the 2000 Census of Population and Housing, the population of Ivana was 1,293 on May 1, 2000, up 269 from the 1995 Census, representing an average annual growth of 4.8%. This compares to a negative growth of 3% between 1990 and 1995. |
 |
 |
 |
 |
 |
|
| The Municipalities |
 |
 |
|
 |