Nearly half of the biggest US cities reported fewer residents after COVID. By 2024, many had begun adding residents again.

Researchers formulated a mathematical equation that unifies 12,000 years of human population growth and points to an alarming ...

A physicist warned that raging pandemics, war, resource shortages, plunging birthrates and climate change could destabilize ...

A sharp decline in international migration slowed population growth in 48 states, underscoring how dependent many states have ...

Population growth in midsize cities held relatively steady last year, even as the national rate slowed.

Each year, the Census Bureau publishes population estimates for all municipalities in the U.S. with a population of 20,000 or more. Last week, it released last year’s estimates, reporting population ...

Population ecology is the study of how populations — of plants, animals, and other organisms — change over time and space and interact with their environment. Populations are groups of organisms of ...

Experts say the Colorado economy could take a hit as the state’s population growth continues on a decade-long decline.

While global population growth is projected to slow over the rest of the century, Africa stands out for its relatively young ...

Michigan has seen sluggish population growth over the past five years. The state gained an estimated 48,522 residents between the 2020 Census and July 2025, going from a population of 10,079,362 to 10 ...

In a new open-access study that I published with my late colleague Kostya Trachenko from Queen Mary University of London, I propose a surprisingly simple nonlinear mathematical equation that unifies ...