Recorded 1980–2023 Unisex name Peak 1981 467 births

Kao — boys' name

467 babies named Kao in U.S. Social Security records since 1980, with the highest year being 1981. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1980s2421990s1452000s162010s542020s10
1980s
Peak decade

52% of everyone ever named Kao was born in this single decade.

1981
Single peak year

40 babies were named Kao in 1981 — its busiest year on record.

What the Data Says About Kao

The Social Security Administration has registered 467 babies named Kao between 1980 and 2023, spanning 44 consecutive years of U.S. birth records. As a boy's name, Kao currently falls outside the top 1,000 boys' names for 2023. The name reached its historical peak in 1981, when 40 babies received it in a single year. Kao is classified as unisex in SSA records: the opposite-sex variant accounts for 244 additional births since 1980.

Decade-level aggregation shows that Kao performed strongest in the 1980s, accumulating 242 births during that ten-year window. Across the 5 decades of recorded activity, Kao shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 213 births — the largest state-level total in the dataset — followed by Minnesota and Oregon. In total, SSA state-level files list Kao in 4 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Kao 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 467 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.

Kao at a glance

Last recorded 2023

Total births

467

Since 1980

44 years of records

Peak year

1981

40 births that year

Strongest decade: 1980s

Current rank

Unranked

Outside the modern top-1,000

As of 2023

Active since

1980

Recorded for 44 years

Last year on file: 2023

Kao popularity over time — boys

Annual U.S. births registered with the Social Security Administration · 2023–1980

Last recorded 2023
Peak year (1981)
40
Annual births at peak — across 44 years of records
01020304050 202320172011199819941990198619821980 23

Kao popularity over time — girls

244 total births recorded since 1980 (Kao as girls' name)

Unisex variant — 244 births
0510152025 20001996199319901987198419811980 9

Kao by decade

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

Peak: 1980s
Peak decade
1980s
242 births that decade — 52% of Kao's all-time total
1980s2421990s1452000s162010s542020s10

Kao by state

Where Kao concentrates geographically — total births since 1980

Regionally concentrated
Top 4 states by recorded births for the name Kao
Rank State Visual share Births Share of total
#1 California
213 45.6%
#2 Minnesota
17 3.6%
#3 Oregon
14 3.0%
#4 Washington
12 2.6%
California share of Kao's total US births 45.6%
Even split

213 of 467 births nationwide. Compared to a flat distribution across 4 reporting states.

Frequently Asked Questions

How popular is the name Kao?
467 babies have been named Kao since 1980. It was last recorded in 2023. The peak year was 1981 with 40 births.
When was Kao most popular?
Kao was most popular in the 1980s decade with 242 total births. The single peak year was 1981.
Where is Kao most popular?
The top states for the name Kao are California (213 births), Minnesota (17 births), Oregon (14 births).
Is Kao a unisex name?
Yes, Kao is used for both boys and girls. As a boy's name it has 467 births, and as a girl's name it has 244 births.
How long has the name Kao been used?
Kao has been recorded in Social Security data since 1980, spanning 44 years of data through 2023.
What names are similar to Kao?
Names with a similar sound or spelling include Kaoru, Kaos, Kaori, Kaon, and 1 more. These share a common prefix and are also used for boys.

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, 1980–2023 (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.