Born in 2004: How Old Are You in 2026?
Anyone born in 2004 is 21 or 22 years old in 2026 — 22 once their birthday has passed, 21 until then.
Your age updates against today's date.
Your age today
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How old are you if you were born in 2004?
The year on its own only narrows the answer to two numbers. Which one applies depends on whether this year’s birthday has already come around.
Find your birth month below. Months that share a row with two ages are the ones the birthday falls inside right now.
| Born in | Age in 2026 | Birthday |
|---|---|---|
| January 2004 | 22 | Already passed |
| February 2004 | 22 | Already passed |
| March 2004 | 22 | Already passed |
| April 2004 | 22 | Already passed |
| May 2004 | 22 | Already passed |
| June 2004 | 22 | Already passed |
| July 2004 | 21 or 22 | This month |
| August 2004 | 21 | Still ahead |
| September 2004 | 21 | Still ahead |
| October 2004 | 21 | Still ahead |
| November 2004 | 21 | Still ahead |
| December 2004 | 21 | Still ahead |
The calendar year 2004
2004 was a leap year: 366 days, with 29 days in February. It opened on a Thursday.
2004 is Generation Z
Births from 1997 to 2012 fall inside Generation Z, putting 2004 8 of 16 years into the cohort.
Those cut-offs are the Pew Research Center definitions, which are the ones most US reporting follows. Pew itself notes that generational boundaries are a convention, not a hard science.
Milestone years for someone born in 2004
Each row is a US age threshold and the calendar year a 2004 birth reaches it. Exact dates depend on the birthday itself.
| Age | Year | What happens |
|---|---|---|
| 16 | 2020 | Old enough to drive in most states |
| 18 | 2022 | Legal adult — eligible to vote |
| 21 | 2025 | Legal drinking age nationwide |
| 25 | 2029 → | Most car-rental young-driver surcharges end |
| 30 | 2034 → | Turns 30 |
| 40 | 2044 → | Turns 40 |
| 50 | 2054 → | Turns 50 |
| 62 | 2066 → | Earliest age to claim Social Security retirement benefits |
| 65 | 2069 → | Medicare eligibility begins |
| 67 | 2071 → | Full Social Security retirement age (67) |
| 70 | 2074 → | Delayed retirement credits stop accruing |
Full retirement age by year of birth follows the Social Security Administration schedule set by the 1983 amendments. Driving, drinking, and rental thresholds are the common US rules and vary by state and company.
Frequently asked questions
How old is someone born in 2004?
In 2026 they are 21 or 22 years old. They turn 22 on their birthday, so anyone whose birthday has already passed this year is 22, and anyone still waiting is 21. The month-by-month table on this page gives the answer for each birth month.
What generation is 2004?
Someone born in 2004 belongs to Generation Z, which covers births from 1997 to 2012. That boundary comes from the Pew Research Center.
Was 2004 a leap year?
Yes. 2004 was a leap year, so it had 366 days and February ran to 29 days. Anyone born on 29 February that year has a real birthday only once every four years.
When does someone born in 2004 reach full retirement age?
Under the Social Security schedule, someone born in 2004 has a full retirement age of 67, which they reach in 2071. They could claim a reduced benefit as early as 2066, and Medicare eligibility begins in 2069. Social Security treats anyone born on 1 January as belonging to the previous birth year.
What day of the week did 2004 start on?
1 January 2004 fell on a Thursday.
Other birth years
Every birth year
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