US rank #7633 Girls' name Peak 1998 5,135 births

Cydney — #7633 US girls' name

5,135 babies named Cydney in U.S. Social Security records since 1942, with the highest year being 1998. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1940s491950s3331960s3131970s1961980s4381990s17612000s14312010s5192020s95
#7633
of 17,661 girls in use

More common than 57% of names given to girls today.

1990s
Peak decade

34% of everyone ever named Cydney was born in this single decade.

1998
Single peak year

227 babies were named Cydney in 1998 — its busiest year on record.

What the Data Says About Cydney

The Social Security Administration has registered 5,135 babies named Cydney between 1942 and 2024, spanning 83 consecutive years of U.S. birth records. As a girl's name, Cydney currently holds the #7633 rank among girls for 2024. The name reached its historical peak in 1998, when 227 babies received it in a single year.

Decade-level aggregation shows that Cydney performed strongest in the 1990s, accumulating 1,761 births during that ten-year window. Across the 9 decades of recorded activity, Cydney shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 455 births — the largest state-level total in the dataset — followed by Texas and Georgia. In total, SSA state-level files list Cydney in 32 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Cydney in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 5,135 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.

Cydney at a glance

Outside the top 1,000

Total births

5,135

Since 1942

83 years of records

Peak year

1998

227 births that year

Strongest decade: 1990s

Current rank

#7,633

Among girls

As of 2024

Active since

1942

Recorded for 83 years

Last year on file: 2024

Cydney popularity over time — girls

Annual U.S. births registered with the Social Security Administration · 2024–1942

Outside the top 1,000
Peak year (1998)
227
Annual births at peak — across 83 years of records
-50050100150200250 202420142004199419841974196419541942 5

Cydney popularity over time — boys

25 total births recorded since 1995 (Cydney as boys' name)

Unisex variant — 25 births
456789 2005200019961995 6

Cydney by decade

Total births in each ten-year window — peak vs trough at a glance

Peak: 1990s
Peak decade
1990s
1,761 births that decade — 34% of Cydney's all-time total
1940s491950s3331960s3131970s1961980s4381990s17612000s14312010s5192020s95

Cydney by state

Where Cydney concentrates geographically — total births since 1942

Geographically diffuse
Top 8 states by recorded births for the name Cydney
Rank State Visual share Births Share of total
#1 California
455 8.9%
#2 Texas
357 7.0%
#3 Georgia
164 3.2%
#4 Illinois
164 3.2%
#5 Florida
151 2.9%
#6 New York
141 2.7%
#7 Ohio
138 2.7%
#8 Pennsylvania
103 2.0%
California share of Cydney's total US births 8.9%
Even split

455 of 5,135 births nationwide. Compared to a flat distribution across 32 reporting states.

Cydney appears in 32 states. Explore state details →

Frequently Asked Questions

How popular is the name Cydney?
5,135 babies have been named Cydney since 1942. It currently ranks #7633 among girls. The peak year was 1998 with 227 births.
When was Cydney most popular?
Cydney was most popular in the 1990s decade with 1,761 total births. The single peak year was 1998.
Where is Cydney most popular?
The top states for the name Cydney are California (455 births), Texas (357 births), Georgia (164 births).
How long has the name Cydney been used?
Cydney has been recorded in Social Security data since 1942, spanning 83 years of data through 2024.
What names are similar to Cydney?
Names with a similar sound or spelling include Cydnee, Cydni, Cyd, Cydnie, and 3 more. These share a common prefix and are also used for girls.

Data Sources

Data as of 2024. Source: U.S. Social Security Administration (SSA).

Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, 1942–2024 (ssa.gov/oact/babynames). National-level data includes all names with 5 or more occurrences in a given year.

State-level: Source: U.S. Social Security Administration, Baby Names — State-Level Files (namesbystate.zip). Includes all names with 5 or more occurrences per state per year; rarer names are excluded for privacy.