United States - Fertility Rate, Total for Least Developed Countries was 3.94464 Births per Woman in January of 2019, according to the United States Federal Reserve. Historically, United States - Fertility Rate, Total for Least Developed Countries reached a record high of 6.78376 in January of 1970 and a record low of 3.94464 in January of 2019. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Fertility Rate, Total for Least Developed Countries - last updated from the United States Federal Reserve on March of 2024.