The decade

Born in the 2000s

Written . By the BirthAlmanac team.

Years
2000–2009Ten years.
Age in 2026
17 to 26The age a birthday in 2026 brings.
Generation
Generation ZAs the sources named on the generations page draw them.
Leap years
2000, 2004 and 20082000 was one because it divides by 400; 1900 was not, and 2100 will not be.

The world they were born into

The 2000s began with the attacks of 11 September 2001 in the United States and the wars that followed. The euro entered circulation as notes and coins in 2002. The decade closed with the global financial crisis of 2008 and the recession that came after it. In 2006 South Africa became the fifth country in the world to allow same-sex marriage, and it is still the only one in Africa.

Growing up

It was the decade the social web was built: Wikipedia launched in 2001, Facebook in 2004 and YouTube in 2005, and the first iPhone went on sale in 2007, when the oldest children of the decade were six or seven.

Which generation

Everyone born in the 2000s belongs to Generation Z. The boundaries are conventions rather than facts, and the generations page names the source for each one. Where the tables disagree about the 2000s:

  • 2000. Pew puts 2000 in Generation Z. Definitions that end the Millennials in 2000 put it with the Millennials.
19001920194019601980200020202040The Greatest Generation1901–1927The Silent Generation1928–1945Baby Boomers1946–1964Generation X1965–1980Millennials1981–1996Generation Z1997–2012Generation Alpha2010–2024Generation Beta2025–203920001900194019802020The Greatest Generation, 1901–1927The Silent Generation, 1928–1945Baby Boomers, 1946–1964Generation X, 1965–1980Millennials, 1981–1996Generation Z, 1997–2012Generation Alpha, 2010–2024Generation Beta, 2025–20392000

Boundary set by researchers or the birth record Named by a writer or a consultancy, or claimed by two sources; the dates are not settled

Only the baby boom has an official definition, taken from the birth rate. Everything after Generation Z, and everything before the Silent Generation, is a label somebody proposed. McCrindle starts Generation Alpha in 2010, before Pew ends Generation Z in 2012, so those three years belong to both. As at 2026.

The marked line is 2000, where the decade begins.

Year by year

The Chinese year begins not on 1 January but at a new moon, usually the second after the December solstice, and from 1900 to 2100 always between 21 January and 20 February. In the 2000s it began as early as 22 January, in 2004, and as late as 18 February, in 2007, so a birthday in January or early February belongs to the animal of the year before. The table gives the day each year began.

YearChinese yearBeganGenerationAge in 2026
2000Leap yearMetal Dragon5 FebruaryGeneration Z26
2001Metal Snake24 JanuaryGeneration Z25
2002Water Horse12 FebruaryGeneration Z24
2003Water Goat1 FebruaryGeneration Z23
2004Leap yearWood Monkey22 JanuaryGeneration Z22
2005Wood Rooster9 FebruaryGeneration Z21
2006Fire Dog29 JanuaryGeneration Z20
2007Fire Pig18 FebruaryGeneration Z19
2008Leap yearEarth Rat7 FebruaryGeneration Z18
2009Earth Ox26 JanuaryGeneration Z17

New year dates are worked out from the new moons and the solar terms, and checked against published tables. Born before the new year →

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