Boys' name · since 2004

Kosi

Kosi has 12 recorded births since 2004 in federal Social Security data, most heavily in 2004 -- full year-by-year trend, decade aggregates, and state rankings follow.

12
total births
2004–2015
years on record
2000s
peak decade
58%
born in that decade

Kosi is not among the current top-ranked boys names; 12 have been recorded since 2004.

Social Security Administration records show Kosi recorded 12 times among boys since 2004, though it doesn't currently rank among the most-used boys names, peaking in the 2000s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 2004 to 2015.

  • 12 total births
  • 2004–2015 years on record
  • 2000s peak decade
  • 58% born in that decade

Data updated Jul 2026

Below the archive median
All-time archive position

Kosi's 12 recorded births place it above 27% of the 45,481 boys names in the full SSA archive.

National only
State-record footprint

No state rows cleared SSA’s public reporting threshold for this name.

Kosi's usage pattern, beyond the headline number

Divide Kosi's SSA record in two at 2015 and the more recent half accounts for 42% of all births, the earlier half the remaining 58%, a genuinely balanced usage pattern. Its calmest year was 2015, with only 5 births recorded -- set against the 2004 peak of 7, that's the full swing in one name's fortunes.

Kosi popularity over time

Annual U.S. births registered with the Social Security Administration · 2004–2015

Last recorded 2015
Peak year (2004)
7
Annual births at peak, across 12 years of records
4.555.566.577.5 20042015 5

Kosi by decade

Total births in each ten-year window, peak vs trough at a glance

2000s was Kosi's strongest decade.

7 babies received the name during that ten-year window, about 58% of all-time use.

Kosi births by decade

Total births in each ten-year window

births

What this shows Peak: 2000s at 7 births (58% of all-time use).

Source U.S. Social Security Administration · Baby Names As of July 2026

Frequently Asked Questions

How popular is the name Kosi?
Kosi has been given to 12 babies in the U.S. since 2004, according to SSA data. Its last appearance in the data was 2015. 7 babies were born in 2004, its single highest year.
When was Kosi most popular?
Kosi was most popular in the 2000s decade with 7 total births. The single peak year was 2004.
How long has the name Kosi been used?
Kosi has been recorded in Social Security data since 2004, spanning 12 years of data through 2015.
What names are similar to Kosi?
Names with a similar sound or spelling include Kosta, Kostas, Koston, Kostantinos, and 4 more. These share a common prefix and are also used for boys.

What to do with Kosi's data

  • Kosi's usage has stayed within range of its 2000s decade-level peak (7 total births) through the 2010s (5) -- a comparatively stable name, not a fading trend.
  • Weighing it against an alternative? Put two names side by side. Compare names

Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.

Data Sources

Data as of July 2026. Source: U.S. Social Security Administration (SSA).

According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.

Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 2004–2015 (ssa.gov/oact/babynames).

State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).

Cite this page

NameAlmanac. "Kosi: Baby Name Since 2004 - 12 Births, Peak 2004." NameAlmanac. Accessed via https://namealmanac.com/name/kosi. Licensed CC BY-SA 4.0.

Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Kosi draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of July 2026.