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Sidnee

Girls' name

Wide + island, through Sidney

Sidnee has been given to 636 babies in the U.S. since 1940. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1999, with 39 recorded.

Babies named Sidnee, 2019

1 in 386,000

Sidnee over time, 1880–2025

Girls
01020304018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Sidnee: meaning, origin, and history

Wide + island, through Sidney

surname transfer

What Sidnee means

Sidnee belongs to the name family reached through Sidnee → Sidney. Its meaning is “wide + island”.

Origin, language, and formation

Sidnee is used in English. Its origins include surname transfer.

Sidnee is recorded as a surname transferred into given-name use.

Related names and everyday forms

Related names include Sidney.

American usage and historical context

In the United States, 636 girls were recorded with the name Sidnee between 1940 and 2019. Its highest annual count was 39 in 1999; its best national rank was #3,274 in 1995.

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 Sidnee?

Sidnee had fewer than 5 recorded uses in 2025, so these figures use 2019, the last year it was published.

Among all babies, 2019
1 in 386,000
9 of 3,472,229 births
Among girls only
1 in 186,000
<0.01% of girls
Rank, 2019
Unranked
Fewer than 5 uses
Coin-flip room size
267,420 kids
Even odds of a second one

Where Sidnee 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 2019 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 267,420 children born in 2019 and it's an even bet that one of them is another Sidnee. In a class of 30 the chance is Under 1%.

When Sidnees were born

Half of everyone ever recorded as Sidnee was born before 2001 — so the typical Sidnee is around 24 today.

Median birth year
2001
About 24 years old
Biggest decade
2000s
44.7% of all use
Born in the last 25 years
84.0%
A modern name
Recorded since 1950
625
People you could plausibly meet
Choose a decade

2000s — 44.7% of all recorded uses (284).

Is Sidnee 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
0%
Peak was 1999 (39)
Years since peak
26
Years
Year-to-year steadiness
Shifting
18.5% average annual change
Best rank ever
#3,274
1995

Spellings of Sidnee

Sidnee is not the most common spelling — Sydney is, with 78.7% against Sidnee's 0.28%.

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.

Where Sidnee is used

Across 1910–2025, Sidnee was most concentrated in California — about 1 in — girls, against 1 in 1,157,561 across all states with data. It was least common in Utah (1 in —).

00 per 100,000

Most concentrated

  1. 1California1 in —
  2. 2Ohio1 in —
  3. 3Texas1 in —
  4. 4Utah1 in —

Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Sidnee has too little recent state data to map, so this covers all years from 1910.

Sidnee around the world

Where Sidnee 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
    2008–2008
    #5,545
    in 2008
  • South Australia
    2000–2000
    #727
    in 2000

Popularity data from Office for National Statistics and Consumer and Business Services (South Australia). ONS data under Open Government Licence v3.0. CBS SA data under CC BY 4.0.

Sidnee by the numbers

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

As a girl's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#3,274
1995
Peak year
1999
39 that year
First recorded
1940
Last recorded
2019
All-time count
636
Count in 2025
Under 5

Names similar to Sidnee

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

SiddhiSidrahRaineeRayneeJayneeSidraSidnieSidonieLaineeLayneeEmoneeJerneeDaphneeDelaneeSidoniaTawneeTahneeCydneeEvaneeMarneeSidniDavaneeChesneeSidratul

Sibling names for Sidnee

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 Sidnee

Top names of 1999, Sidnee's peak yearThe 1990s in fullOther names that peaked in 1995Girls' names starting with S