The U.S. and World Population Clock presents the

United States Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of th ...

's continuously active approximations of both the

population Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world. Governments typically quantify the size of the resident population within their jurisdiction usi ...

of the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

and the world's total population. The population totals are based on the latest census information and national population estimates, which are used in the algorithms that run the two clocks. The current population of the United States is approximately {{data United States, poptoday, formatnum.

Calculation

The calculation used to estimate the approximate timely population is; one birth per time ''T_W''
- one death per time ''T_X''
+ one international immigrant per time ''T_Y''
= overall increase (one person per time ''T_Z'').

Example

One birth every 1 minute and 56 seconds
- One death every 3 minutes and 59 seconds
+ One international migrant every 3 minutes and 11 seconds
= One person every 1 minute and 8 seconds

External Links

World Population Clock
Demographics of the United States Clocks United States Census Bureau