Coi
Coi is given to both girls and boys: 18 girls and 7 boys were given it in 2025 (#6,373 among girls’ names and #9,899 among boys’, #8,888 among all names counting both); 192 Americans have been recorded with it since 1996 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Coi by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
How popular is Coi?
#6,373 among girls’ names, 2025
Coi entered the girls’ rankings after 2015 and stood at #6,373 in 2025.
31 babies in 2021, the peak
Coi peaked in 2021, when 31 babies were given it (18 girls, #6,455 among girls’ names). The 25 births of 2025 (girls and boys) are 81% of that peak.
Births by sex.
| Year | Girls | Girls’ rank | Boys | Boys’ rank |
|---|---|---|---|---|
| 2025 | 18 | #6,373 | 7 | #9,899 |
| 2024 | 22 | #5,658 | 7 | #10,093 |
| 2023 | 23 | #5,421 | 8 | #9,072 |
| 2022 | 17 | #6,773 | 8 | #9,148 |
| 2021 | 18 | #6,455 | 13 | #6,391 |
| 2020 | 7 | #12,426 | under 5 | |
| 2019 | under 5 | 7 | #9,934 | |
| 2016 | 5 | #16,827 | under 5 | |
| 2013 | under 5 | 5 | #12,492 | |
| 2009 | under 5 | 5 | #12,836 |
Every recorded year (13)
| Year | Girls | Girls’ rank | Boys | Boys’ rank |
|---|---|---|---|---|
| 2008 | 5 | #18,140 | 7 | #10,062 |
| 1999 | 5 | #14,899 | under 5 | |
| 1996 | under 5 | 5 | #9,246 |
Ranks: girls’ names and boys’ names ranked separately in each year’s SSA file; “under 5” is a year SSA did not list the name for that sex.
Is Coi a boy’s or a girl’s name?
Of the 192 Americans recorded as Coi, 63% are girls and 38% boys.
Years with fewer than 20 babies given the name are left blank.
Girls and boys named Coi: the SSA national file counts each sex separately.
How many people are named Coi, and how old are they?
An estimated 191 Americans named Coi and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 4 years old and half are between 2 and 6. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 279 people named Coi (126 women and girls, 153 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 46 born in the U.S. The Census count is 6.1 times 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 2 names spelled alike, given to 2,071 babies since 1880, Coi is the second most given (9.3% of them). In 2025 it was given to 25 of their 103 babies (24%), again the second 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 Coi
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
| Name | Recorded | 1990-2025 |
|---|---|---|
| Jream | 3,184 |
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 Coi and names like it
- Compare Coi and CocoBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2020sCoi peaked in 2021.
- The top names of 2021The year the most babies were named Coi.
- The names of Generation AlphaMost people named Coi alive today were born 2013-2025.
- Names starting with CMost given first.