Population in the US

The population size of the United States of America is now almost 330 million, making it the third most populous country in the world after China and India. California, at almost 40 million people, has the highest number of inhabitants out of all states.

The US has experienced relatively rapid population growth for a developed country due to high immigration and birth rates, but as in other high-income countries, its fertility rate is now below replacement and continuing to decline.

Read our latest news stories and blog posts about population in the US.

11 July 2020

World Population Day 2020 Live Q&A

Join us for a live panel discussion on the link between population and the UN Sustainable Development Goals.

23 December 2019

2019 Year in Review

PM director Robin Maynard reviews a successful year for Population Matters, but one which brought much bad news about the planet.

7 August 2019

US loses ‘football field’ worth of nature every 30 seconds

A new report from the Center for American Progress (CAP) reveals that more than 24 million acres of nature have been lost from the contiguous United States between 2001 and 2017 due to human development; the equivalent of one football field every 30 seconds.

Biodiversity

Environment

US population

7 January 2019

US and China's population growth at new low

Population growth rates in the US and China are now at 0.6% and 0.4%, respectively. Whilst both countries achieved similar results with very different measures, a lower number of people being added every year is a welcome development on our overstretched planet.

Search form

Population in the US

World Population Day 2020 Live Q&A

2019 Year in Review

US loses ‘football field’ worth of nature every 30 seconds

US and China's population growth at new low