How Many People Are Named Rex?
Official U.S. Social Security & Census demographic profile for Rex
An estimated 24,090 living people in the United States currently have the first name Rex. In total, official Social Security Administration records document 25,915 U.S. birth applications with this name between 1880 and 2024, ranking it #103 in all-time national frequency.
| Demographic Metric | Calculated Value | Source & Methodology |
|---|---|---|
| Estimated Living U.S. Bearers | ~24,090 | CDC Actuarial Life Table Model |
| All-Time SSA Births (1880–2024) | 25,915 | Social Security Administration |
| National Popularity Standing | #103 | U.S. First-Name Historical Index |
| Peak Registration Year | 2000 (568 births) | SSA Historical Records |
Key Insights for Rex
Key Demographic Statistics for Rex
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: 568 registrations in 2000.
Registration change over the recent 2015–2024 window.
Historical Popularity & Annual Trends
Between 2015 and 2024, Rex has experienced a 28% softening in annual newborn registrations from preceding decades.
U.S. Birth Registrations for Rex (1880–2024)
Peak Era: 2000 (~568 recorded births)
📊 View Selected Historical Timeline Data Table (1880–2024)
| Year | Total Births | Male | Female |
|---|---|---|---|
| 2010 | 409 | 8 | 401 |
| 2011 | 390 | 8 | 382 |
| 2012 | 371 | 7 | 364 |
| 2013 | 353 | 7 | 346 |
| 2014 | 334 | 7 | 327 |
| 2015 | 316 | 6 | 310 |
| 2016 | 299 | 6 | 293 |
| 2017 | 281 | 6 | 275 |
| 2018 | 265 | 5 | 260 |
| 2019 | 244 | 0 | 244 |
| 2020 | 228 | 0 | 228 |
| 2021 | 215 | 0 | 215 |
| 2022 | 201 | 0 | 201 |
| 2023 | 188 | 0 | 188 |
| 2024 | 175 | 0 | 175 |
Showing 15 most recent milestone years. Source: SSA 1880–2024.
Relative Popularity by Decade
Sex & Gender Distribution in Historical Records
Historical U.S. registration data shows Rex is overwhelmingly recorded as a feminine first name (98.3% female births).
Distribution calculated from cumulative U.S. Social Security application records (1880–2024).
Origin & Meaning of the Name Rex
Linguistic root and etymological background.
Historical interpretation recorded in onomastic sources.
Rex in the 2020 Decennial Census
In the 2020 Decennial U.S. Census first-name tabulations, Rex appeared 22,222 times, ranking #451 among all first names recorded in 2020 returns.
Where Is the Name Rex Most Common?
The largest estimated concentration of living bearers is located in California (~3,011 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) | ~3,011 | 12.5% |
| Texas (TX) | ~2,216 | 9.2% |
| Florida (FL) | ~1,638 | 6.8% |
| New York (NY) | ~1,469 | 6.1% |
| Pennsylvania (PA) | ~964 | 4% |
| Illinois (IL) | ~940 | 3.9% |
| Ohio (OH) | ~867 | 3.6% |
| Georgia (GA) | ~795 | 3.3% |
Actuarial Living Population & Average Age Model
Based on cohort survival models applied to 1880–2024 SSA birth registrations, an estimated 24,090 people named Rex are living today in the U.S., with an estimated average age of 30.8 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 Rex: 30.8 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 →Frequently Asked Questions About Rex
How many people in the U.S. are named Rex?
Approximately 24,090 living people in the United States currently bear the first name Rex. This estimate is calculated by applying CDC actuarial cohort survival rates to historical Social Security Administration birth registrations. In total, SSA records document 25,915 birth applications for Rex between 1880 and 2024.
What is the all-time popularity rank of Rex?
Rex ranks #103 in all-time national frequency among U.S. first names. This places Rex comfortably within the top 500 most widely recognized American names.
When was the name Rex most popular in America?
The name Rex reached its peak historical popularity in 2000, when 568 newborn birth applications were recorded in that single year.
What is the origin and meaning of the name Rex?
Rex has Traditional origins, historically carrying the meaning "Noble, cherished".
What is the gender breakdown for the name Rex?
According to cumulative U.S. Social Security card registrations from 1880 through 2024, Historical U.S. registration data shows Rex is overwhelmingly recorded as a feminine first name (98.3% female births).
Where is the name Rex most common in the United States?
The largest estimated number of living individuals named Rex resides in California, with approximately 3,011 bearers (about 12.5% of the U.S. total).
How many people had the name Rex in the 2020 Census?
In the 2020 Decennial U.S. Census first-name tabulations, Rex appeared 22,222 times in census returns, ranking #451 in official 2020 returns.
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