Baby Names US
boys' name ★ peaked 1914

Isidor

Gender Boy Rank 2025 #10,083
Rank 2025
#10,083
among boys · ↓736 vs 2024
Babies in 2025
7
named Isidor
How common
1 in 244,011
boys born in 2025
Peak year
1914
24 babies
All-time total
419
#8,778 all-time among boys
First recorded
1883
in Social Security records

Isidor popularity over time

419 babies have been named Isidor since 1883, 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
0.020.040.060.0818801900192019401960198020002020Peak 1892Boys

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 Boys Per year Change Best rank
1880s 18 2 – #802
1890s 36 4 +100% #830
1900s 22 2 -39% #1,297
1910s 160 16 +627% #1,078
1920s 67 7 -58% #2,088
1930s 36 4 -46% #2,733
1940s 6 1 -83% #3,528
1950s 33 3 +450% #3,051
1960s 6 1 -82% #3,814
1970s – – – –
1980s – – – –
1990s – – – –
2000s – – – –
2010s 5 1 – #12,927
2020s (to 2025) 30 5 +900% #6,044

The story of Isidor

Isidor is rare for boys in the United States, ranked #10,083 in 2025 with 7 babies given the name. It is currently rising compared with a decade ago.

Since 1883, 419 American babies have been named Isidor. Its peak came in 1914, when 24 newborns received the name, the signature sound of the 1910s.

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 Isidor stood among all boys' names in any year, or use the compare tool to plot it against other names.

Isidor year by year

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

Year Boys Boys rank
2025 7 #10,083
2024 8 #9,347
2023 15 #6,044
2022 – –
2021 – –
2020 – –
2019 – –
2018 5 #12,927
2017 – –
2016 – –
2015 – –
2014 – –
2013 – –
2012 – –
2011 – –
2010 – –
2009 – –
2008 – –
2007 – –
2006 – –
2005 – –
2004 – –
2003 – –
2002 – –
2001 – –
2000 – –
1995 – –
1990 – –
1985 – –
1980 – –
1975 – –
1970 – –
1965 – –
1960 – –
1955 7 #3,325
1950 5 #3,923
1945 – –
1940 – –
1935 – –
1930 5 #4,261
1925 11 #2,664
1920 16 #2,088
1915 24 #1,388
1910 – –
1905 – –
1900 5 #1,407
1895 – –
1890 – –
1885 7 #802
1880 – –

Famous people named Isidor

The most globally famous bearers of the name, ranked by fame across Wikipedia editions (Pantheon project, MIT).

  1. 1 Isidor Straus Isidor Straus American politician, businessman, and Titanic sinking victim (1845–1912) 19th century
  2. 2 Isidor Isaac Rabi Isidor Isaac Rabi American physicist (1898–1988) 19th century
  3. 3 Isidor Gunsberg Isidor Gunsberg Hungarian chess player (1854–1930) 19th century

Portraits from Wikipedia (Wikimedia Commons).

Frequently asked questions

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

How popular is the name Isidor in 2025?

Isidor ranked #10,083 among boys' names in the United States in 2025, with 7 babies given the name, according to Social Security Administration data.

How many people are named Isidor?

419 babies have been named Isidor in the United States since 1883, based on Social Security card applications.

When was the name Isidor most popular?

Isidor peaked in 1914, when 24 newborns received the name.

Is Isidor a boy or girl name?

Isidor is overwhelmingly a boy's name: 100% of babies with the name.

Is the name Isidor rising or falling?

Isidor is on the rise, noticeably more popular now than a decade ago.

Who are famous people named Isidor?

Well-known people named Isidor include Isidor Straus (politician), Isidor Isaac Rabi (physicist), Isidor Gunsberg (chess player).

Names like Isidor

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

Compare Isidor with similar names → More names starting with I →