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Isobelle

#12,415 in 2025Girls' name

My God is an oath, through Isabel

Isobelle has been given to 106 babies in the U.S. since 1914. In 2025 it ranked #12,415 of 17,293 girls’ names in use. Its peak year was 2008, with 8 recorded.

Babies named Isobelle, 2025

1 in 474,000

Isobelle over time, 1880–2025

Girls
0246818801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Isobelle: meaning, origin, and history

My God is an oath, through Isabel

Deeper origin not confirmed in the cited records

What Isobelle means

Isobelle belongs to the name family reached through Isobelle → Isabel. Its meaning is “my God is an oath”.

Origin, language, and formation

Isobelle is used in English.

Related names and everyday forms

Related names include Isabel.

American usage and historical context

In the United States, 106 girls were recorded with the name Isobelle between 1914 and 2025. Its highest annual count was 8 in 2008; its best national rank was #3,883 in 1914.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Isobelle?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 474,000
7 of 3,315,165 births
Among girls only
1 in 230,000
<0.01% of girls
Rank, 2025
#12,415
of 17,293 girls’ names in use
Coin-flip room size
328,272 kids
Even odds of a second one

Where Isobelle sits on the popularity scale

Rarest published (5 a year)#1 — Olivia (13,544)

Chance at least one other child shares the name

If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 328,272 children born in 2025 and it's an even bet that one of them is another Isobelle. In a class of 30 the chance is Under 1%.

When Isobelles were born

Half of everyone ever recorded as Isobelle was born before 2010 — so the typical Isobelle is around 15 today.

Median birth year
2010
About 15 years old
Biggest decade
2010s
40.6% of all use
Born in the last 25 years
84.0%
A modern name
Recorded since 1950
96
People you could plausibly meet
Choose a decade

2010s — 40.6% of all recorded uses (43).

Is Isobelle rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
—
Not ranked then
Rank vs 5 years ago
New entry
Not ranked then
Rank vs 10 years ago
—
Not ranked then
Births vs 10 years ago
—
Not published both years
Share of its own peak
87.5%
Peak was 2008 (8)
Years since peak
17
Years
Year-to-year steadiness
Shifting
14.7% average annual change
Best rank ever
#3,883
1914

Spellings of Isobelle

Isobelle is not the most common spelling — Isabella is, with 75.9% against Isobelle's 0.02%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Isobelle around the world

Where Isobelle ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    1996–2025
    #1,584
    in 2025
  • Scotland
    2018–2018
    #809
    in 2018
  • Northern Ireland
    2012–2012
    #451
    in 2012
  • Ireland
    1995–2023
    #856
    in 2023
  • South Australia
    1947–2013
    #818
    in 2013

Popularity data from Office for National Statistics, National Records of Scotland, Northern Ireland Statistics and Research Agency, Central Statistics Office and Consumer and Business Services (South Australia). ONS, NRS, NISRA data under Open Government Licence v3.0. CSO, CBS SA data under CC BY 4.0.

Isobelle by the numbers

The raw record for each sex the name is used for.

As a girl's name

Rank in 2025
#12,415
Trend vs 5 yrs ago
New entry
Best rank ever
#3,883
1914
Peak year
2008
8 that year
First recorded
1914
Last recorded
2025
All-time count
106
Count in 2025
7

Names similar to Isobelle

Matched on shared beginnings and endings, similar length, and comparable popularity.

IsobellaMiabelleEmrielleZyrielleAriyelleBriyelleKhamilleAnnaelleNorielleGianelleZurielleAribelleKarielleAmrielleKnoelleLaurielleEmmabelleAvrielleRaielleSorelleIrielleBrayelleRoyelleKyrielle

Sibling names for Isobelle

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Isobelle

Top names of 2008, Isobelle's peak yearThe 2000s in fullOther names that peaked in 1914Girls' names starting with I