The U.S. Census Bureau says the U.S. population was 326,971,407 on Jan. 1, 2018, representing an increase of 2,314,238, or 0.71 percent, from New Year’s Day 2017.
Since Census Day (April 1) 2010, the population has grown by 18,225,587, or 5.9 percent.
In January 2018, the United States is expected to experience one birth every 8 seconds and one death every 10 seconds. Meanwhile, net international migration is expected to add one person to the U.S. population every 29 seconds.
The combination of births, deaths and net international migration will increase the U.S. population by one person every 18 seconds.
The projected world population on Jan. 1, 2018, is 7,444,443,881, an increase of 78,521,283, or 1.07 percent, from New Year’s Day 2017. During January 2018, 4.3 births and 1.8 deaths are expected worldwide every second.
The Census Bureau’s U.S. and World Population Clock simulates real-time growth of the United States and world populations.
The U.S. population clock is based on a series of short-term projections for the resident population of the United States, including people whose usual residence is in the 50 states and the District of Columbia.
The world population was estimated to have reached 7.5 billion in December and the United Nations estimates it will further increase to 11.8 billion by the year 2100.
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