Use this indicator to compare age-sex structure after placing every count in the stated age bands and using the same population reference date.

Pop 65+

Population aged 65 years and over.

Total pop

Total population of all ages.

65+ share

Share of the population aged 65+, in percent.

Fixed age thresholds are conventions rather than biological boundaries. Migration, cohort shocks, institutional populations, and different age-band definitions can alter comparisons.

Show the underlying age-sex counts or population pyramid beside the summary ratio. Alternative dependency thresholds can test whether a conclusion depends on one conventional age boundary.

• Ageing Index Calculator

  Compute the ageing index, the number of persons aged 65 and over per hundred children under age 15.

• Age-Specific Sex Ratio Checker

  Compute the sex ratio (males per 100 females) for each age group and flag groups outside a plausibility band; the default band of 90-110 is a stated heuristic and fully adjustable.

• Population Pyramid Shape Classifier

  Classify a pyramid as expansive when the young share exceeds the old share by more than half a point, constrictive when the reverse holds, stationary when they are equal within half a point, and report the age-dependency ratio.