Irby — boys' name
1,104 babies named Irby in U.S. Social Security records since 1896, with the highest year being 1918. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
23% of everyone ever named Irby was born in this single decade.
37 babies were named Irby in 1918 — its busiest year on record.
What the Data Says About Irby
The Social Security Administration has registered 1,104 babies named Irby between 1896 and 1991, spanning 96 consecutive years of U.S. birth records. As a boy's name, Irby currently falls outside the top 1,000 boys' names for 1991. The name reached its historical peak in 1918, when 37 babies received it in a single year.
Decade-level aggregation shows that Irby performed strongest in the 1920s, accumulating 256 births during that ten-year window. Across the 11 decades of recorded activity, Irby shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Alabama, which accounts for 122 births — the largest state-level total in the dataset — followed by Louisiana and Texas. In total, SSA state-level files list Irby in 5 of the 51 U.S. reporting jurisdictions.
No etymological entry is currently available for Irby 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 1,104 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.
Irby at a glance
Last recorded 1991Peak year
Current rank
Active since
Irby popularity over time — boys
Annual U.S. births registered with the Social Security Administration · 1991–1896
- Peak year (1918)
- 37
- Annual births at peak — across 96 years of records
No longer in the modern top-1000 — last recorded 1991.
1,104 total births across 96 years of SSA records. Peaked in 1918 with 37 births in a single year.
Irby popularity over time — girls
26 total births recorded since 1898 (Irby as girls' name)
Unisex use remains the minority pattern
The girls' variant of Irby accounts for 2% of total recorded use across both genders.
Irby by decade
Total births in each ten-year window — peak vs trough at a glance
- Peak decade
- 1920s
- 256 births that decade — 23% of Irby's all-time total
Irby decade highlights
- Peak decade 256 births
- Runner-up 216 births
- Modern era share 2010s + 2020s
- Decades tracked with recorded births
1920s was Irby's strongest decade
256 babies received the name during that ten-year window — about 23% of all-time use.
Irby by state
Where Irby concentrates geographically — total births since 1896
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Alabama | | 122 | 11.1% |
| #2 | Louisiana | | 66 | 6.0% |
| #3 | Texas | | 16 | 1.4% |
| #4 | Tennessee | | 11 | 1.0% |
| #5 | South Carolina | | 10 | 0.9% |
122 of 1,104 births nationwide. Compared to a flat distribution across 5 reporting states.
Top 5 states
- Alabama 11.1% of nationwide
- Louisiana 6.0% of nationwide
- Texas 1.4% of nationwide
- Tennessee 1.0% of nationwide
- South Carolina 0.9% of nationwide
Recorded in 5 of 51 SSA jurisdictions
Alabama accounts for 11.1% of all recorded births nationwide — a relatively diffuse profile for this name.
Frequently Asked Questions
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Keep exploring Irby
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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, 1896–1991 (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.