Rex vs Olivia

Side-by-side comparison of Rex and Olivia — popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Rex

Boy name · Rank #792

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Name B

Olivia

Girl name · Rank #1

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Which name is more popular?

Metric Rex Olivia
Current Rank #792 #1
Total Births (all years) 60,160 553,664
Peak Year 1951 2014
Peak Year Births 1,503 19,836
Peak Decade 1950ss 2010ss
Gender Boy Girl
First Recorded Year 1880 1880

Births by Decade

Decade Rex Olivia
1880ss 183 618
1890ss 305 1,099
1900ss 497 1,575
1910ss 3,253 3,545
1920ss 5,627 4,982
1930ss 5,949 3,922
1940ss 6,669 7,201
1950ss 13,500 6,100
1960ss 8,732 4,015
1970ss 3,360 7,849
1980ss 2,533 14,061
1990ss 1,741 75,913
2000ss 2,048 156,048
2010ss 3,944 184,528
2020ss 1,819 82,208

Recent Annual Births (2014–present)

Year Rex Olivia
2014 389 19,836
2015 374 19,726
2016 423 19,409
2017 434 18,777
2018 420 18,055
2019 410 18,569
2020 377 17,682
2021 379 17,841
2022 380 16,654
2023 367 15,313
2024 316 14,718

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 1880–2024.

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