Koy
Koy was given to 18 boys in 2025, #5,317 among boys’ names; 979 Americans have been recorded with it since 1970 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Koy by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Koy?
#5,317 among boys’ names, 2025
Koy fell from #3,834 in 2015 to #5,317 in 2025 among boys’ names; its share of boys born fell from 14.6 to 10.5 per million.
46 babies in 1997, the peak
Koy peaked in 1997, when 46 boys were given it, #1,979 among boys’ names. The 18 births of 2025 are 39% of that peak.
Births by sex.
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2025 | 18 | #5,317 | 10.5 |
| 2024 | 33 | #3,490 | 19.2 |
| 2023 | 21 | #4,821 | 12.3 |
| 2022 | 18 | #5,332 | 10.3 |
| 2021 | 32 | #3,544 | 18.3 |
| 2020 | 25 | #4,088 | 14.5 |
| 2019 | 23 | #4,413 | 12.8 |
| 2018 | 20 | #4,849 | 11.0 |
| 2017 | 27 | #3,932 | 14.6 |
| 2016 | 33 | #3,400 | 17.4 |
Every recorded year (47)
| Year | Births | Rank | Per million boys |
|---|---|---|---|
| 2015 | 28 | #3,834 | 14.6 |
| 2014 | 31 | #3,508 | 16.1 |
| 2013 | 33 | #3,306 | 17.4 |
| 2012 | 28 | #3,756 | 14.8 |
| 2011 | 28 | #3,739 | 14.7 |
| 2010 | 22 | #4,454 | 11.5 |
| 2009 | 15 | #5,969 | 7.6 |
| 2008 | 30 | #3,608 | 14.7 |
| 2007 | 22 | #4,444 | 10.6 |
| 2006 | 34 | #3,190 | 16.5 |
| 2005 | 28 | #3,492 | 14.0 |
| 2004 | 41 | #2,619 | 20.7 |
| 2003 | 36 | #2,757 | 18.2 |
| 2002 | 25 | #3,511 | 12.9 |
| 2001 | 20 | #4,046 | 10.3 |
| 2000 | 23 | #3,588 | 11.7 |
| 1999 | 36 | #2,492 | 18.7 |
| 1998 | 26 | #3,057 | 13.6 |
| 1997 | 46 | #1,979 | 24.4 |
| 1996 | 21 | #3,343 | 11.1 |
| 1995 | 17 | #3,772 | 8.9 |
| 1994 | 7 | #7,406 | 3.6 |
| 1993 | 12 | #4,877 | 6.1 |
| 1992 | 6 | #7,996 | 3.0 |
| 1991 | 5 | #8,965 | 2.5 |
| 1990 | 7 | #6,843 | 3.4 |
| 1988 | 6 | #6,886 | 3.1 |
| 1987 | 6 | #6,570 | 3.2 |
| 1982 | 7 | #5,341 | 3.9 |
| 1979 | 5 | #6,586 | 2.9 |
| 1977 | 5 | #6,383 | 3.0 |
| 1975 | 7 | #4,577 | 4.5 |
| 1974 | 9 | #3,712 | 5.7 |
| 1973 | 5 | #5,513 | 3.2 |
| 1972 | 7 | #4,227 | 4.3 |
| 1971 | 5 | #5,316 | 2.8 |
| 1970 | 6 | #4,508 | 3.2 |
Ranks and shares: boys’ names in each year’s SSA file; share of all boys SSA recorded that year.
Is Koy a boy’s or a girl’s name?
Of the 979 Americans recorded as Koy, 3% are girls and 97% boys. In 2025 it went to 18 boys; SSA lists no girls with it that year (fewer than 5, or none).
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Koy: the SSA national file counts each sex separately.
How many people are named Koy, and how old are they?
An estimated 958 Americans named Koy and born in the U.S. are alive in 2026 (98% of everyone recorded); the median is 19 years old and half are between 10 and 27. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 1,118 people named Koy (283 women and girls, 835 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 824 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).
Names spelled alike
Of these 8 names spelled alike, given to 32,978 babies since 1880, Koy is the fifth most given (3.0% of them). In 2025 it was given to 18 of their 2,052 babies (<1%), the seventh most given that year.
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 Koy
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 Koy and names like it
- Compare Koy and CoyBirths, ranks, peak and the living estimate side by side.
- The most given names of the 1990sKoy peaked in 1997.
- Texas’s most given namesThe state where SSA recorded the most babies named Koy since 1910.
- The top names of 1997The year the most babies were named Koy.
- The names of Generation ZMost people named Koy alive today were born 1997-2012.
- Names starting with KMost given first.