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Cydney

#10,269 in 2025Girls' name

Variant of Sydney

Cydney has been given to 5,170 babies in the U.S. since 1942. In 2025 it ranked #10,269 of 17,293 girls’ names in use. Its peak year was 1998, with 227 recorded.

Babies named Cydney, 2025

1 in 368,000

Cydney over time, 1880–2025

GirlsBoys
010020030018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Cydney: meaning, origin, and history

Variant of Sydney

Deeper origin not confirmed in the cited records

What Cydney means

Cydney is a variant of Sydney.

Origin, language, and formation

Cydney is used in English.

Related names and everyday forms

Related names include Sydney.

American usage and historical context

In the United States, 5,145 girls were recorded with the name Cydney between 1942 and 2025. Its highest annual count was 227 in 1998; its best national rank was #914 in 1997.

Over 5 years its rank fell, from #4,787 in 2020 to #10,269 in 2025. Over 10 years its rank fell, from #3,714 in 2015 to #10,269 in 2025.

In the United States, 25 boys were recorded with the name Cydney between 1995 and 2005. Its highest annual count was 8 in 1996; its best national rank was #6,614 in 1996.

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 Cydney?

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

Among all babies, 2025
1 in 368,000
9 of 3,315,165 births
Among girls only
1 in 179,000
<0.01% of girls
Rank, 2025
#10,269
of 17,293 girls’ names in use
Coin-flip room size
255,323 kids
Even odds of a second one

Where Cydney 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 255,323 children born in 2025 and it's an even bet that one of them is another Cydney. In a class of 30 the chance is Under 1%.

When Cydneys were born

Half of everyone ever recorded as Cydney was born before 1997 — so the typical Cydney is around 28 today.

Median birth year
1997
About 28 years old
Biggest decade
1990s
34.2% of all use
Born in the last 25 years
35.6%
Spread across generations
Recorded since 1950
5,096
People you could plausibly meet
Choose a decade

1990s — 34.2% of all recorded uses (1,761).

Is Cydney 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
−2,593
Places dropped
Rank vs 5 years ago
−5,482
Places dropped
Rank vs 10 years ago
−6,555
Places dropped
Births vs 10 years ago
0.22×
Fewer babies than then
Share of its own peak
4.0%
Peak was 1998 (227)
Years since peak
27
Years
Year-to-year steadiness
Shifting
22.8% average annual change
Best rank ever
#914
1997

Spellings of Cydney

Cydney is not the most common spelling — Sydney is, with 79.5% against Cydney's 2.3%.

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 Cydney is used

Across 1910–2025, Cydney was most concentrated in Georgia — about 1 in 25,000 girls, against 1 in 57,164 across all states with data. It was least common in West Virginia (1 in —).

04 per 100,000

Most concentrated

  1. 1Georgia1 in 25,000
  2. 2California1 in 33,333
  3. 3Florida1 in 33,333
  4. 4Texas1 in 33,333
  5. 5Alaska1 in 50,000
  6. 6Colorado1 in 50,000
  7. 7Illinois1 in 50,000
  8. 8Louisiana1 in 50,000

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. Cydney has too little recent state data to map, so this covers all years from 1910.

Cydney around the world

Where Cydney 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
    1996–2024
    #4,844
    in 2024
  • Canada
    1991–2012
    #3,249
    in 2012
  • South Australia
    1998–2005
    #775
    in 2005

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

Cydney in other languages

Cross-language forms and variants of Cydney. Linked forms have their own page here.

Sydney

Variant forms from Wikidata (CC0). Most are used mainly outside the United States; U.S. birth records statistics cover US usage only.

Cydney by the numbers

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

As a girl's name

Rank in 2025
#10,269
Trend vs 5 yrs ago
Down 5,482
Best rank ever
#914
1997
Peak year
1998
227 that year
First recorded
1942
Last recorded
2025
All-time count
5,145
Count in 2025
9

As a boy's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#6,614
1996
Peak year
1996
8 that year
First recorded
1995
Last recorded
2005
All-time count
25
Count in 2025
Under 5

Names similar to Cydney

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

VianeyJaneyHoneyRaineyTierneyChaneyChesneyVianneySidneyJanneyCydneeLaineyLaneyRooneyDestineyDaphneyKortneyJourneyPenneyDelaineyKourtneyCydnieBritneyRodney

Names with a curve like Cydney

Not spelling — timing. These names rose, peaked and faded in the same years as Cydney, so they read as being from the same moment even when they look nothing alike.

SheridanAlyssiaGabrieleDaishaAlysaBrionnaKeannaAllyssaKalieKearaGabrielKaylan

Sibling names for Cydney

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 Cydney

Top names of 1998, Cydney's peak yearThe 1990s in fullOther names that peaked in 1997Girls' names starting with C