United States Population 2024. The median age in the united states is 38.3 years (2024). 51 rows by far the most populous state in the united states is california, which has more than 40 million residents and comprises nearly 12% of the country’s total population.
In united states, the population is 346,111,912 as of tuesday, november 12, 2024, with a growth rate of 0.55% per year, 9,985 births per day, and 8,324 deaths per day. Usafacts uses census data to break down the us population by race, age, and more.