🇺🇸 The population of the United States has grown dramatically over the past 70 years — from 166 million in 1955 to more than 347 million in 2025. This steady rise reflects economic expansion, immigration, urban development, and the country’s role as one of the world’s most influential nations. Each decade shows how the U.S. has evolved into a larger, more diverse, and more dynamic society. From the post-war boom to the modern tech-driven era, population growth continues to shape the country’s