United States Rate of Natural Increase

The rate of natural increase (RNI)—the difference between a country's birth rate and death rate, excluding migration—reflects the underlying demographic trends of a nation. In the United States, the RNI has been relatively low in recent years, hovering around 0.1% to 0.2% per year, primarily due to declining birth rates and an aging population. This rate is similar to that of Canada, which also experiences low birth rates and an aging demographic, resulting in an RNI close to or even below that of the U.S. In contrast, Mexico exhibits a higher RNI, typically around 1% annually, driven by a younger population and higher fertility rates. Thus, while all three countries are experiencing a gradual slowdown in natural population growth, the U.S. and Canada have much lower RNIs compared to Mexico, reflecting broader trends of demographic transition in North America.

Data from US Census International Database