US rank #2975 Unisex name Peak 2008 19,110 births

Kiley — #2975 US unisex name

19,110 babies named Kiley in U.S. Social Security records since 1958, with the highest year being 2008. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1950s51960s271970s7831980s19311990s37412000s81212010s41312020s371
#2975
of 17,661 girls in use

More common than 83% of names given to girls today.

2000s
Peak decade

42% of everyone ever named Kiley was born in this single decade.

2008
Single peak year

1,089 babies were named Kiley in 2008 — its busiest year on record.

What the Data Says About Kiley

The Social Security Administration has registered 19,110 babies named Kiley between 1958 and 2024, spanning 67 consecutive years of U.S. birth records. As a girl's name, Kiley currently holds the #2975 rank among girls for 2024. The name reached its historical peak in 2008, when 1,089 babies received it in a single year. Kiley is classified as unisex in SSA records: the opposite-sex variant accounts for 1,097 additional births since 1968.

Decade-level aggregation shows that Kiley performed strongest in the 2000s, accumulating 8,121 births during that ten-year window. Across the 8 decades of recorded activity, Kiley shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 1,655 births — the largest state-level total in the dataset — followed by Texas and Ohio. In total, SSA state-level files list Kiley in 48 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Kiley 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 19,110 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.

Kiley at a glance

Outside the top 1,000

Total births

19,110

Since 1958

67 years of records

Peak year

2008

1,089 births that year

Strongest decade: 2000s

Current rank

#2,975

Among girls

As of 2024

Active since

1958

Recorded for 67 years

Last year on file: 2024

Kiley popularity over time — girls

Annual U.S. births registered with the Social Security Administration · 2024–1958

Outside the top 1,000
Peak year (2008)
1,089
Annual births at peak — across 67 years of records
-50005001,0001,500 202420162008200019921984197619681958 5

Kiley popularity over time — boys

1,097 total births recorded since 1968 (Kiley as boys' name)

Unisex variant — 1,097 births
020406080100 20162003199719911985197919731968 13

Kiley by decade

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

Peak: 2000s
Peak decade
2000s
8,121 births that decade — 42% of Kiley's all-time total
1950s51960s271970s7831980s19311990s37412000s81212010s41312020s371

Kiley by state

Where Kiley concentrates geographically — total births since 1958

Geographically diffuse
Top 8 states by recorded births for the name Kiley
Rank State Visual share Births Share of total
#1 California
1,655 8.7%
#2 Texas
1,161 6.1%
#3 Ohio
917 4.8%
#4 Florida
914 4.8%
#5 Illinois
873 4.6%
#6 Pennsylvania
807 4.2%
#7 Michigan
583 3.1%
#8 Georgia
579 3.0%
California share of Kiley's total US births 8.7%
Even split

1,655 of 19,110 births nationwide. Compared to a flat distribution across 48 reporting states.

Kiley appears in 48 states. Explore state details →

Frequently Asked Questions

How popular is the name Kiley?
19,110 babies have been named Kiley since 1958. It currently ranks #2975 among girls. The peak year was 2008 with 1,089 births.
When was Kiley most popular?
Kiley was most popular in the 2000s decade with 8,121 total births. The single peak year was 2008.
Where is Kiley most popular?
The top states for the name Kiley are California (1,655 births), Texas (1,161 births), Ohio (917 births).
Is Kiley a unisex name?
Yes, Kiley is used for both boys and girls. As a girl's name it has 19,110 births, and as a boy's name it has 1,097 births.
How long has the name Kiley been used?
Kiley has been recorded in Social Security data since 1958, spanning 67 years of data through 2024.
What names are similar to Kiley?
Names with a similar sound or spelling include Kilee, Kila, Kileigh, Killian, and 4 more. These share a common prefix and are also used for girls.

Keep exploring Kiley

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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, 1958–2024 (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.