Generally, a total fertility rate of between 2.1 and 2.5 is considered appropriate to maintain a stable population.

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A total fertility rate (TFR) of about 2.1 children per woman is considered the replacement level fertility, which is the average number of children a woman would need to have to ensure that one daughter survives to reproductive age, thereby maintaining a stable population size over the long term. The range up to 2.5 accounts for higher child mortality rates in some regions and the desire for slightly larger families in others, but 2.1 is the generally accepted figure for a stable population.

Generally, a Total Fertility Rate of Between 2