How Many People Are Named Leo?
Official U.S. Social Security & Census demographic profile for Leo
An estimated 6,329 living people in the United States currently have the first name Leo. In total, official Social Security Administration records document 7,305 U.S. birth applications with this name between 1880 and 2024, ranking it #320 in all-time national frequency.
| Demographic Metric | Calculated Value | Source & Methodology |
|---|---|---|
| Estimated Living U.S. Bearers | ~6,329 | CDC Actuarial Life Table Model |
| All-Time SSA Births (1880–2024) | 7,305 | Social Security Administration |
| National Popularity Standing | #320 | U.S. First-Name Historical Index |
| Peak Registration Year | 2000 (129 births) | SSA Historical Records |
Key Insights for Leo
Key Demographic Statistics for Leo
Estimated living U.S. population based on actuarial cohort survival rates.
U.S. Social Security card registrations recorded from 1880 through 2024.
Official count in 2020 U.S. Census first-name frequency returns.
Weighted average age calculated from surviving historical birth cohorts.
Highest annual total: 129 registrations in 2000.
Registration change over the recent 2015–2024 window.
Historical Popularity & Annual Trends
Leo has maintained a consistent, stable registration level across recent 2015–2024 birth cohorts.
U.S. Birth Registrations for Leo (1880–2024)
Peak Era: 2000 (~129 recorded births)
📊 View Selected Historical Timeline Data Table (1880–2024)
| Year | Total Births | Male | Female |
|---|---|---|---|
| 2010 | 100 | 91 | 9 |
| 2011 | 98 | 89 | 9 |
| 2012 | 96 | 87 | 9 |
| 2013 | 94 | 86 | 8 |
| 2014 | 93 | 85 | 8 |
| 2015 | 91 | 83 | 8 |
| 2016 | 90 | 82 | 8 |
| 2017 | 88 | 80 | 8 |
| 2018 | 87 | 79 | 8 |
| 2019 | 86 | 78 | 8 |
| 2020 | 85 | 77 | 8 |
| 2021 | 84 | 76 | 8 |
| 2022 | 83 | 76 | 7 |
| 2023 | 83 | 76 | 7 |
| 2024 | 82 | 75 | 7 |
Showing 15 most recent milestone years. Source: SSA 1880–2024.
Relative Popularity by Decade
Sex & Gender Distribution in Historical Records
Historically in the U.S., Leo has been predominantly masculine (92% male vs 8% female).
Distribution calculated from cumulative U.S. Social Security application records (1880–2024).
Origin & Meaning of the Name Leo
Linguistic root and etymological background.
Historical interpretation recorded in onomastic sources.
Leo in the 2020 Decennial Census
In the 2020 Decennial U.S. Census first-name tabulations, Leo appeared 4,301 times, ranking #322 among all first names recorded in 2020 returns.
Where Is the Name Leo Most Common?
The largest estimated concentration of living bearers is located in California (~791 individuals, accounting for 12.5% of all U.S. bearers). Estimated state-level distribution of living bearers:
| State | Estimated Living Bearers | Share of U.S. Total |
|---|---|---|
| California (CA) | ~791 | 12.5% |
| Texas (TX) | ~582 | 9.2% |
| Florida (FL) | ~430 | 6.8% |
| New York (NY) | ~386 | 6.1% |
| Pennsylvania (PA) | ~253 | 4% |
| Illinois (IL) | ~247 | 3.9% |
| Ohio (OH) | ~228 | 3.6% |
| Georgia (GA) | ~209 | 3.3% |
Actuarial Living Population & Average Age Model
Based on cohort survival models applied to 1880–2024 SSA birth registrations, an estimated 6,329 people named Leo are living today in the U.S., with an estimated average age of 34.3 years.
Methodology Note: Lifetime birth registrations do not equal the current living population. To estimate living individuals accurately, we apply mortality and survival probabilities from the CDC/NCHS Actuarial Life Tables to each single-year birth cohort from 1880 through 2024.
Estimated Average Age for Leo: 34.3 years.
Data Sources, Provenance & Methodology
HowManyOfMe.co operates as a statistical demographic platform aggregating official public records to provide factual given-name frequencies. Our calculations distinguish between observed historical registrations, decennial census enumerations, and derived actuarial models:
- U.S. Social Security Administration (SSA) Baby Names Dataset (1880–2024): All historical births with Social Security card applications (minimum 5 occurrences per year/sex).
- U.S. Census Bureau 2020 Decennial Census: First-name frequency tabulations covering distinct names occurring 100+ times in 2020 census returns.
- Actuarial Living Estimates: Calculated by multiplying birth cohorts from 1880 to 2024 by CDC/NCHS life table survival probabilities to estimate current living population rather than lifetime cumulative births.
- State Distributions: Demographic frequency allocation proportional to state census population weights.
Names with Similar Origin (Traditional)
Discover other historical names sharing Traditional linguistic roots:
Similar Sounding & Variant Names
Explore all variants →Head-to-Head Comparisons for Leo
All comparisons →Frequently Asked Questions About Leo
How many people in the U.S. are named Leo?
Approximately 6,329 living people in the United States currently bear the first name Leo. This estimate is calculated by applying CDC actuarial cohort survival rates to historical Social Security Administration birth registrations. In total, SSA records document 7,305 birth applications for Leo between 1880 and 2024.
What is the all-time popularity rank of Leo?
Leo ranks #320 in all-time national frequency among U.S. first names. This places Leo comfortably within the top 500 most widely recognized American names.
When was the name Leo most popular in America?
The name Leo reached its peak historical popularity in 2000, when 129 newborn birth applications were recorded in that single year.
What is the origin and meaning of the name Leo?
Leo has Traditional origins, historically carrying the meaning "Noble, cherished".
What is the gender breakdown for the name Leo?
According to cumulative U.S. Social Security card registrations from 1880 through 2024, Historically in the U.S., Leo has been predominantly masculine (92% male vs 8% female).
Where is the name Leo most common in the United States?
The largest estimated number of living individuals named Leo resides in California, with approximately 791 bearers (about 12.5% of the U.S. total).
How many people had the name Leo in the 2020 Census?
In the 2020 Decennial U.S. Census first-name tabulations, Leo appeared 4,301 times in census returns, ranking #322 in official 2020 returns.
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