Baby Name Popularity Profile

Rex

Data-driven SSA statistics, rankings, and historical trends for Rex.

✦ King 🌍 Latin royal
National Rank (2025) #859
All-Time Peak Rank #170 Achieved 1951
Total U.S. Births 60,449 since 1880
Unisex Distribution 100.0% Boy / 0.0% Girl Male Archetype
First Recorded 1880 Last seen: 2025
Peak Decade 1950s 1,503 births in 1951
💡 The Rex Vibe: Considered a Declining Classic. A previously dominant name currently experiencing a prolonged generational cooling period.

🌍 Meaning & Etymology

Primary Meaning King
Language Origin Latin
Origin Type single
Derived directly from the Latin word 'rex', meaning 'king'.
Pronunciation: REKS
Themes & Categories
royal
Etymology confidence: High

📖 The Story Behind Rex

According to SSA data, Rex achieved its highest historical rank of #170 in 1951. Its highest annual registration volume occurred in 1951 with 1,503 babies. Between 2015 and 2025, modern registrations have decreased by 24.9%. Overall, the name has maintained a ranked presence for 146 consecutive years.

📊 Factual Timeline & Current Trajectory (1880 – 2025)

Registration footprint of Rex across 145 years of SSA data.

5-Year Trajectory Declining
10-Year Shift -24.9% Decline
18801920196020002025

📈 Popularity Milestones & Volatility

Busiest Year on Record 1,503 births in 1951
Years in Top 100 0 yrs
Years in Top 500 95 yrs
Registry Streak 146 yrs
Historical Volatility Highly Volatile
Largest 1-Year Jump N/A
Decade-by-Decade Registration Volumes
1880s: 183
1890s: 305
1900s: 497
1910s: 3,253
1920s: 5,627
1930s: 5,949
1940s: 6,671
1950s: 13,499
1960s: 8,735
1970s: 3,359
1980s: 2,532
1990s: 1,740
2000s: 2,048
2010s: 3,945
2020s: 2,106

📐 Sound & Spelling Structure

Phonetic Syllables Rex
Letter Count 3 letters
Spelling Complexity Easy
Length Percentile Longer than 0.2% of names
Linguistic Profile: It is an isogram, meaning no two letters are repeated. Longer than 0.2% of SSA names. Starts with R, a letter used by only 4.7% of SSA names.

🛠️ Sibling & Surname Cadence Tool

Enter a surname or sibling name to test how it pairs with Rex.

📍 Authentic State & Regional Rankings

Highest Ranking State Utah
Top States Utah, Idaho, Kansas, Nebraska, Indiana
States with Data 48
State 2025 Rank Total Births Peak Year 5-Yr Velocity
Utah #368 1,707 1951 Insufficient historical volume
Idaho Unranked 777 1922 Insufficient historical volume
Kansas Unranked 2,022 1952 Insufficient historical volume
Nebraska Unranked 1,228 1956 Insufficient historical volume
Indiana #614 3,935 1951 Insufficient historical volume
Iowa Unranked 2,013 1951 Insufficient historical volume
Oklahoma #543 1,793 1953 Insufficient historical volume
West Virginia Unranked 969 1951 Insufficient historical volume
Wyoming Unranked 138 1951 Insufficient historical volume
Missouri #772 2,178 1951 Insufficient historical volume
Arkansas Unranked 1,027 1940 Insufficient historical volume
Alabama #747 1,546 1956 Insufficient historical volume
Oregon Unranked 753 1951 Insufficient historical volume
Colorado #830 935 1952 Insufficient historical volume
Tennessee #1019 1,637 1961 Insufficient historical volume
Michigan #979 2,887 1951 Insufficient historical volume
Kentucky #792 1,296 1951 Insufficient historical volume
Washington #720 1,192 1952 Insufficient historical volume
South Dakota Unranked 243 1951 Insufficient historical volume
Ohio #995 3,215 1958 Insufficient historical volume
North Carolina #1248 1,870 1959 Insufficient historical volume
Hawaii Unranked 185 1983 Insufficient historical volume
Texas #929 4,445 1954 28.9% Decline
Montana Unranked 172 1916 Insufficient historical volume
Illinois #996 2,484 1951 Insufficient historical volume
Arizona #590 614 1957 Insufficient historical volume
Mississippi Unranked 633 1953 Insufficient historical volume
New Mexico Unranked 251 1955 Insufficient historical volume
California #695 4,513 1956 18.4% Decline
Georgia Unranked 1,221 1962 Insufficient historical volume
Florida #877 1,335 1960 Insufficient historical volume
Virginia #1216 878 1960 Insufficient historical volume
Wisconsin #673 621 1952 Insufficient historical volume
Louisiana #878 544 1954 Insufficient historical volume
Minnesota #629 427 1952 Insufficient historical volume
Pennsylvania #1393 1,213 1958 Insufficient historical volume
Maryland Unranked 311 1953 Insufficient historical volume
South Carolina #849 268 1959 Insufficient historical volume
Nevada Unranked 52 2017 Insufficient historical volume
Alaska Unranked 21 1961 Insufficient historical volume
New York #1537 1,056 1961 Insufficient historical volume
North Dakota Unranked 41 1954 Insufficient historical volume
Maine Unranked 32 1960 Insufficient historical volume
District of Columbia Unranked 28 1955 Insufficient historical volume
Massachusetts Unranked 125 2019 Insufficient historical volume
New Jersey Unranked 120 1963 Insufficient historical volume
Rhode Island Unranked 5 1958 Insufficient historical volume
Connecticut Unranked 15 1956 Insufficient historical volume

👨‍👩‍👧 Sibling Name Suggestions

👦 Brother Suggestions
Neil Keith Nelson Douglas Stanley Frankie Lee Van Guy Von
👧 Sister Suggestions
Julie Deborah Joy Ann Lou Lee Lyn San Lin Jan

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Demographic & Volume Peers
Ray Rey Ric Roy Reign Riggs Roger Ricky Ren Rick
More royal Names
Browse all royal names → Browse Latin names →

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Explore our name indexes and data tracks:

👦 Top Boy Names → 1-Syllable Names → 3-Letter Names → More Declining Classic Names → Latin Origin Names → royal Names → Names Peaking in 1951 → 🗺️ Regional State Data →