Rate of natural increase

The natural increase in population, from the CIA World Factbook, 2017.
  ≥ 30
  25 – 29.99
  20 – 24.99
  15 – 19.99
  10 – 14.99
  5 – 9.99
  0 – 4.99
  -5 – -0.01
  < -5
  Data unavailable

In demography and population dynamics, the rate of natural increase (RNI), also known as natural population change, is defined as the birth rate minus the death rate of a particular population, over a particular time period.[1] It is typically expressed either as a number per 1,000 individuals in the population[2] or as a percentage.[3] RNI can be either positive or negative. It contrasts to total population change by ignoring net migration.

This RNI gives demographers an insight into how a region's population is evolving, and these analyses can inform government attempts to shape RNI.

  1. ^ Rogers, Luke; Borsella, Peter (March 24, 2016). "Growth or Decline: Understanding How Populations Change". United States Census Bureau.
  2. ^ "World Population Prospects". United Nations Department of Economic and Social Affairs.
  3. ^ "Estimates, 1950 - 2020: Annually interpolated demographic indicators - Rate of natural increase (per 1,000 population)". Our World In Data.