May 21 Birthday Statistics
People born on May 21 have a Gemini birthday, the Emerald birthstone, and the Lily of the valley and hawthorn birth flower. This date is day 142 of a leap-year calendar and has a U.S. birthday rank of #143 out of 366 (2000–2014 births).
May 21 Birthday Overview
A May 21 birthday falls in spring and carries the traditional symbols of May: Emerald as the birthstone and Lily of the valley and hawthorn as the birth flower. The zodiac sign is Gemini, a Air sign represented by the Twins.
The U.S. rank compares this date with all 366 calendar birthdays using recorded birth counts from 2000–2014. The counts and calculation method appear below.
Famous Birthday Matches
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What Happened on May 21?
The curated event list does not include an exact same-date entry for this birthday. The What Happened on My Birthday? tool can show nearby date facts and related calendar notes.
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How Common Is May 21?
May 21 ranks #143 of 366 by total births in this U.S. dataset. The file records 172,074 births on this month and day across 2000–2014, or 0.277% of its 62,187,024 recorded births.
- Average when this date occurred
- 11,471.6 births across 15 occurrences
- Lowest recorded count for this date
- 7,473 in 2006
- Highest recorded count for this date
- 13,853 in 2008
These are historical counts for the United States, not a worldwide ranking or a forecast. Weekdays, holidays and year-to-year changes can affect the counts; this comparison does not establish their causes.
Source: U.S. births, 2000–2014, from the Social Security Administration dataset published by FiveThirtyEight. BirthdayStatistics.com aggregates the recorded counts by month and day. Data licensed CC BY 4.0. Method and limitations.