Kay — #3881 US girls' name
98,583 babies named Kay in U.S. Social Security records since 1885, with the highest year being 1942. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
More common than 78% of names given to girls today.
33% of everyone ever named Kay was born in this single decade.
3,623 babies were named Kay in 1942 — its busiest year on record.
What the Data Says About Kay
The Social Security Administration has registered 98,583 babies named Kay between 1885 and 2024, spanning 140 consecutive years of U.S. birth records. As a girl's name, Kay currently holds the #3881 rank among girls for 2024. The name reached its historical peak in 1942, when 3,623 babies received it in a single year.
Decade-level aggregation shows that Kay performed strongest in the 1940s, accumulating 32,654 births during that ten-year window. Across the 15 decades of recorded activity, Kay shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Texas, which accounts for 6,866 births — the largest state-level total in the dataset — followed by Michigan and Ohio. In total, SSA state-level files list Kay in 51 of the 51 U.S. reporting jurisdictions.
No etymological entry is currently available for Kay 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 98,583 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.
Kay at a glance
Outside the top 1,000Peak year
Current rank
Active since
Kay popularity over time — girls
Annual U.S. births registered with the Social Security Administration · 2024–1885
- Peak year (1942)
- 3,623
- Annual births at peak — across 140 years of records
Currently ranks #3881 among girls.
98,583 total births across 140 years of SSA records. Peaked in 1942 with 3,623 births in a single year.
Kay popularity over time — boys
3,914 total births recorded since 1882 (Kay as boys' name)
Unisex use remains the minority pattern
The boys' variant of Kay accounts for 4% of total recorded use across both genders.
Kay by decade
Total births in each ten-year window — peak vs trough at a glance
- Peak decade
- 1940s
- 32,654 births that decade — 33% of Kay's all-time total
Kay decade highlights
- Peak decade 32,654 births
- Runner-up 24,645 births
- Modern era share 2010s + 2020s
- Decades tracked with recorded births
1940s was Kay's strongest decade
32,654 babies received the name during that ten-year window — about 33% of all-time use.
Kay by state
Where Kay concentrates geographically — total births since 1885
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Texas | | 6,866 | 7.0% |
| #2 | Michigan | | 6,448 | 6.5% |
| #3 | Ohio | | 6,213 | 6.3% |
| #4 | Pennsylvania | | 5,808 | 5.9% |
| #5 | Illinois | | 5,637 | 5.7% |
| #6 | California | | 4,969 | 5.0% |
| #7 | Wisconsin | | 4,950 | 5.0% |
| #8 | Minnesota | | 3,507 | 3.6% |
6,866 of 98,583 births nationwide. Compared to a flat distribution across 51 reporting states.
Top 5 states
- Texas 7.0% of nationwide
- Michigan 6.5% of nationwide
- Ohio 6.3% of nationwide
- Pennsylvania 5.9% of nationwide
- Illinois 5.7% of nationwide
Recorded in 51 of 51 SSA jurisdictions
Texas accounts for 7.0% of all recorded births nationwide — a relatively diffuse profile for this name.
Kay appears in 51 states. Explore state details →
Frequently Asked Questions
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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, 1885–2024 (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.