Baby Names US
boys' name ★ peaked 2000

Koby

Gender Boy · 2% girls Rank 2025 #2,174 Trend ↓ Falling 24%
Rank 2025
#2,174
among boys · ↓104 vs 2024
Babies in 2025
66
named Koby · -15% vs 2024
How common
1 in 25,880
boys born in 2025
Peak year
2000
419 babies
All-time total
6,135
#1,581 all-time among boys
First recorded
1958
in Social Security records

Koby popularity over time

6,135 babies have been named Koby since 1958, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.060.130.190.2518801900192019401960198020002020BoysGirls
BoysGirls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – – – – – –
1890s – – – – – –
1900s – – – – – –
1910s – – – – – –
1920s – – – – – –
1930s – – – – – –
1940s – – – – – –
1950s – 12 12 1 – #3,438
1960s – 54 54 5 +350% #2,555
1970s 10 179 189 19 +250% #1,958
1980s 5 286 291 29 +54% #1,492
1990s 5 1,412 1,417 142 +387% #560
2000s 35 2,562 2,597 260 +83% #533
2010s 12 1,060 1,072 107 -59% #1,273
2020s (to 2025) 30 473 503 84 -22% #1,596

Where Koby is heading

A five-year projection from the recent trend in births per 1,000 boys (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 boys Implied rank
2026 63 0.04 outside top 500
2027 61 0.04 outside top 500
2028 60 0.03 outside top 500
2029 58 0.03 outside top 500
2030 57 0.03 outside top 500

Where Koby is most popular

Boys named Koby per 1,000 boys born in each state, 2021–2025. National average: 0.043 per 1,000. Strongest in Alabama, New York, and Texas.

Vs national average
well below below near national above well above no data

All 50 states and DC, sorted by rate. Counts are boys named Koby born 2021–2025; the per-1,000 rate makes states of different sizes comparable, and the last column shows each state against the national average.

State Boys 2021–2025 Per 1,000 vs national
Alabama 5 0.046 +6%
New York 19 0.044 ≈ national
Texas 38 0.043 ≈ national
Georgia 10 0.039 -8%
Tennessee 5 0.028 -36%
California 20 0.022 -49%
North Carolina 5 0.020 -54%
Florida 9 0.019 -56%
Alaska – – –
Arkansas – – –
Arizona – – –
Colorado – – –
Connecticut – – –
District of Columbia – – –
Delaware – – –
Hawaii – – –
Iowa – – –
Idaho – – –
Illinois – – –
Indiana – – –
Kansas – – –
Kentucky – – –
Louisiana – – –
Massachusetts – – –
Maryland – – –
Maine – – –
Michigan – – –
Minnesota – – –
Missouri – – –
Mississippi – – –
Montana – – –
North Dakota – – –
Nebraska – – –
New Hampshire – – –
New Jersey – – –
New Mexico – – –
Nevada – – –
Ohio – – –
Oklahoma – – –
Oregon – – –
Pennsylvania – – –
Rhode Island – – –
South Carolina – – –
South Dakota – – –
Utah – – –
Virginia – – –
Vermont – – –
Washington – – –
Wisconsin – – –
West Virginia – – –
Wyoming – – –

State counts come from the Social Security Administration's state files, which omit any state-year with fewer than five babies of a name, so small states can undercount slightly.

The story of Koby

Koby is rare for boys in the United States, ranked #2,174 in 2025 with 66 babies given the name. It is currently declining compared with a decade ago.

Since 1958, 6,135 American babies have been named Koby. Its peak came in 2000, when 419 newborns received the name, the signature sound of the 2000s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Koby stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Koby?

The median living Koby is about 23 years old; half are between 15 and 27. An estimated 6,000 people named Koby are alive in the United States today.

median 23 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Koby year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 – – 66 #2,174
2024 5 #16,566 73 #2,070
2023 7 #12,842 65 #2,208
2022 5 #16,602 82 #1,914
2021 6 #14,435 85 #1,830
2020 7 #12,864 102 #1,596
2019 – – 85 #1,810
2018 5 #16,985 93 #1,694
2017 – – 97 #1,638
2016 7 #13,668 99 #1,625
2015 – – 109 #1,519
2014 – – 91 #1,687
2013 – – 114 #1,453
2012 – – 105 #1,529
2011 – – 130 #1,313
2010 – – 137 #1,273
2009 – – 155 #1,171
2008 7 #14,645 180 #1,057
2007 – – 178 #1,057
2006 – – 165 #1,078
2005 – – 162 #1,037
2004 – – 197 #881
2003 5 #17,143 330 #623
2002 7 #12,963 377 #579
2001 8 #11,557 407 #537
2000 8 #11,299 411 #533
1995 – – 83 #1,292
1990 – – 65 #1,391
1985 – – 35 #1,747
1980 – – 20 #2,491
1975 – – 22 #2,094
1970 – – 12 #2,805
1965 – – 11 #2,555
1960 – – – –
1955 – – – –
1950 – – – –
1945 – – – –
1940 – – – –
1935 – – – –
1930 – – – –
1925 – – – –
1920 – – – –
1915 – – – –
1910 – – – –
1905 – – – –
1900 – – – –
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Frequently asked questions

Quick answers about Koby, drawn from the same Social Security data as the charts above.

How old is the average Koby?

The median living Koby is about 23 years old. Half of all living Kobys are between 15 and 27 years old.

How many people named Koby are alive today?

An estimated 6,000 people named Koby are alive in the United States, based on 6,135 recorded births and Social Security life tables.

How popular is the name Koby in 2025?

Koby ranked #2,174 among boys' names in the United States in 2025, with 66 babies given the name, according to Social Security Administration data.

How many people are named Koby?

6,135 babies have been named Koby in the United States since 1958, based on Social Security card applications.

When was the name Koby most popular?

Koby peaked in 2000, when 419 newborns received the name.

Is Koby a boy or girl name?

Koby is overwhelmingly a boy's name: 98% of babies with the name.

Is the name Koby rising or falling?

Koby is declining, less popular now than a decade ago.

Will Koby become more popular?

Koby is trending downward. If the recent trend holds, we project roughly 57 boys named Koby in 2030, which would rank outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Names like Koby

Names that sound and feel close to Koby: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Koby with similar names → More names starting with K →