Population Growth for the Islamic Republic of Iran was 1.20408 % Chg. at Annual Rate in January of 2023, according to the United States Federal Reserve. Historically, Population Growth for the Islamic Republic of Iran reached a record high of 4.13505 in January of 1983 and a record low of 0.83103 in January of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Growth for the Islamic Republic of Iran - last updated from the United States Federal Reserve on September of 2025.