No menu items!

Net Migration Rate – Definition, Formula, Examples


The net migration rate is a quantity that tells us how many migrants have entered a country relative to its population in a fixed time period. It tells us at what rate the net migration has augmented the population over the course of a year. It is defined as the ratio of the net migration in a year to the annual mean population multiplied by 1000.

It can be calculated using the formula,

\text{Net Migration Rate}=\frac{\text{Number of Immigrants - Number of Emigrants}}{\text{Annual Mean Population}}\times 1000

If the number of immigrants is greater than the number of emigrants then we have a positive net migration rate whereas, if the number of emigrants is greater than the number of immigrants then we have a negative net migration rate.


Suppose that in a given year, a particular country has a mean population of 25000000. If 200000 people immigrate into the country that year and 50000 depart overseas, then the net migration rate is given as,

\text{Net Migration Rate}=\frac{200000 - 50000}{25000000}\times 1000 = 6

This means that the population of the country is augmented by 6 people annually per 1000 people in the population.

Hey 👋

I'm currently pursuing a Ph.D. in Maths. Prior to this, I completed my master's in Maths & bachelors in Statistics.

I created this website for explaining maths and statistics concepts in the simplest possible manner.

If you've found value from reading my content, feel free to support me in even the smallest way you can.

Share this article

Recent posts

Popular categories

Recent comments