Mily
Mily was given to 9 girls in 2025, #10,642 among girls’ names; 491 Americans have been recorded with it since 1981 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Mily by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Mily?
#10,642 among girls’ names, 2025
Mily fell from #9,938 in 2015 to #10,642 in 2025 among girls’ names; its share of girls born fell from 6.2 to 5.6 per million.
47 babies in 2008, the peak
Mily peaked in 2008, when 47 girls were given it, #3,517 among girls’ names. The 9 births of 2025 are 19% of that peak.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2025 | 9 | #10,642 | 5.6 |
| 2024 | 10 | #10,017 | 6.2 |
| 2023 | 16 | #7,152 | 10.0 |
| 2022 | 12 | #8,873 | 7.3 |
| 2021 | 13 | #8,321 | 7.9 |
| 2020 | 13 | #8,267 | 8.0 |
| 2019 | 12 | #8,940 | 7.1 |
| 2018 | 17 | #7,008 | 10.0 |
| 2017 | 14 | #8,148 | 8.1 |
| 2016 | 16 | #7,495 | 9.0 |
Every recorded year (34)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2015 | 11 | #9,938 | 6.2 |
| 2014 | 30 | #4,731 | 16.8 |
| 2013 | 25 | #5,435 | 14.2 |
| 2012 | 22 | #6,049 | 12.5 |
| 2011 | 24 | #5,668 | 13.6 |
| 2010 | 22 | #6,111 | 12.4 |
| 2009 | 24 | #5,836 | 13.1 |
| 2008 | 47 | #3,517 | 24.9 |
| 2007 | 19 | #7,005 | 9.9 |
| 2006 | 14 | #8,566 | 7.4 |
| 2005 | 7 | #14,007 | 3.8 |
| 2004 | 20 | #6,134 | 10.9 |
| 2003 | 9 | #11,013 | 4.9 |
| 2002 | 11 | #9,269 | 6.1 |
| 2000 | 7 | #12,690 | 3.9 |
| 1990 | 5 | #14,432 | 2.6 |
| 1989 | 10 | #7,833 | 5.4 |
| 1988 | 6 | #11,269 | 3.4 |
| 1987 | 10 | #7,150 | 5.8 |
| 1986 | 7 | #9,209 | 4.1 |
| 1985 | 8 | #8,042 | 4.6 |
| 1984 | 9 | #7,196 | 5.3 |
| 1983 | 6 | #9,793 | 3.6 |
| 1981 | 6 | #9,912 | 3.6 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Mily a boy’s or a girl’s name?
Mily has been recorded only for girls: SSA lists no boys with the name in 34 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Mily: the SSA national file counts each sex separately.
How many people are named Mily, and how old are they?
An estimated 486 Americans named Mily and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 16 years old and half are between 10 and 20. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 567 people named Mily (556 women and girls, 11 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 417 born in the U.S. The Census count is 36% above that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
How common is the spelling Mily?
Mily is a less common spelling of Millie: SSA has recorded 491 Mily and 46,138 Millie since 1880.
Of these 8 names spelled alike, given to 177,483 babies since 1880, Mily is the eighth most given (<1% of them). In 2025 it was given to 9 of their 10,774 babies (<1%), again the eighth most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Mily
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Mily and names like it
- Compare Mily and MillieBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2000sMily peaked in 2008.
- California’s most given namesThe state where SSA recorded the most babies named Mily since 1910.
- The top names of 2008The year the most babies were named Mily.
- The names of Generation ZMost people named Mily alive today were born 1997-2012.
- Names starting with MMost given first.