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Names › Rex
Rex
Recorded 60,590 times in US records since 1880. Peak year: 1952.
#1769 ↘
U.S. rank · 2025
1 in 11,798
U.S. · 2025 records
Rare gem
rarity tier
≈36,000
alive today (estimate) ⓘ
↘ fading
10-yr trend
How many Rexs are there?

Alive in the US today estimate

Roughly 36,000 Rexes are alive in the US today, we estimate. About 1 in 9,500 Americans.

Made from recorded births by year and sex, multiplied by survival to today's age (SSA life table). It can't see immigration, and it's an estimate, not a census: how the living estimate is made.

Popularity over time

Rex through the years, 1880–2025

1952 · 1,505 1,505 0
18802025
Peak Rex year: 1952 (ringed), with 1,505 recorded. Current usage: ~100% boys. counts of people issued a Social Security number, not a full count of births.

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Every figure on this page is computed from the U.S. Social Security Administration's national baby-names data (ssa.gov), and the living estimate uses the SSA actuarial life table: how we calculate this. Data through 2025; refreshed Jun 2026; living estimate as of 2026.