Recorded 2001–2021 Unisex name Peak 2009 72 births

Rilley — unisex name

72 babies named Rilley in U.S. Social Security records since 2001, with the highest year being 2009. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

2000s402010s272020s5
2000s
Peak decade

56% of everyone ever named Rilley was born in this single decade.

2009
Single peak year

8 babies were named Rilley in 2009 — its busiest year on record.

What the Data Says About Rilley

The Social Security Administration has registered 72 babies named Rilley between 2001 and 2021, spanning 21 consecutive years of U.S. birth records. As a girl's name, Rilley currently falls outside the top 1,000 girls' names for 2021. The name reached its historical peak in 2009, when 8 babies received it in a single year. Rilley is classified as unisex in SSA records: the opposite-sex variant accounts for 69 additional births since 2000.

Decade-level aggregation shows that Rilley performed strongest in the 2000s, accumulating 40 births during that ten-year window. Across the 3 decades of recorded activity, Rilley shows a clear decline from its mid-century high.

No etymological entry is currently available for Rilley 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 72 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.

Rilley at a glance

Last recorded 2021

Total births

72

Since 2001

21 years of records

Peak year

2009

8 births that year

Strongest decade: 2000s

Current rank

Unranked

Outside the modern top-1,000

As of 2021

Active since

2001

Recorded for 21 years

Last year on file: 2021

Rilley popularity over time — girls

Annual U.S. births registered with the Social Security Administration · 2021–2001

Last recorded 2021
Peak year (2009)
8
Annual births at peak — across 21 years of records
456789 202120192016201220112009200820072005200420032001 5

Rilley popularity over time — boys

69 total births recorded since 2000 (Rilley as boys' name)

Unisex variant — 69 births
45678910 20122011201020082006200520042003200220012000 5

Rilley by decade

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

Peak: 2000s
Peak decade
2000s
40 births that decade — 56% of Rilley's all-time total
2000s402010s272020s5

Frequently Asked Questions

How popular is the name Rilley?
72 babies have been named Rilley since 2001. It was last recorded in 2021. The peak year was 2009 with 8 births.
When was Rilley most popular?
Rilley was most popular in the 2000s decade with 40 total births. The single peak year was 2009.
Is Rilley a unisex name?
Yes, Rilley is used for both boys and girls. As a girl's name it has 72 births, and as a boy's name it has 69 births.
How long has the name Rilley been used?
Rilley has been recorded in Social Security data since 2001, spanning 21 years of data through 2021.
What names are similar to Rilley?
Names with a similar sound or spelling include Riley, Rileigh, Rilynn, Rilee, and 4 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, 2001–2021 (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.