During the COVID-19 pandemic, California’s population dropped after a decade of steady growth. After reaching its highest-ever population level in 2020 with more than 39.5 million people ...

Nine counties had double-digit percentage population growth, led by Trinity County in Northern California with 16.9 percent growth. Riverside County in Southern California had the largest gain in ...

Most new immigrants settled in large states such as Florida, California ... As shown in the chart below, Washington D.C. led the nation in population growth in percentage terms during 2024.