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South Africa Population growth rate. Factbook > Countries > South Africa > Demographics. Population growth rate: 0.99% (2016 est.) Definition: The average annual percent change in the population, resulting from a surplus (or deficit) of births over deaths and the balance of migrants entering and leaving a country. The rate may be positive or negative.
The increase in the population growth rate is mainly due to migration. The net migration gain of. 57,400 persons accounted for 62 percent of the stateâs population growth, with natural increase. (births minus deaths) responsible for the other 38 percent. In 2013 and 2014, net migration as a. share of total growth was 44 percent and 58 percent, respectively.