Baby Names US
Unisex name ★ peaked 2023

Rainier

Gender Unisex · 5% girls Rank 2025 #3,362 Trend → Stable
Rank 2025
#3,362
among boys · ↑688 vs 2024
Babies in 2025
35
named Rainier · +30% vs 2024
How common
1 in 48,802
boys born in 2025
Peak year
2023
51 babies
All-time total
920
#5,588 all-time among boys
First recorded
1956
in Social Security records

Rainier popularity over time

920 babies have been named Rainier since 1956, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.010.020.020.0318801900192019401960198020002020BoysGirls
BoysGirls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – – – – – –
1890s – – – – – –
1900s – – – – – –
1910s – – – – – –
1920s – – – – – –
1930s – – – – – –
1940s – – – – – –
1950s – 18 18 2 – #2,607
1960s – 5 5 1 -72% #4,485
1970s – 56 56 6 +1020% #3,548
1980s – 100 100 10 +79% #2,865
1990s – 95 95 10 -5% #4,930
2000s – 126 126 13 +33% #5,208
2010s 25 257 282 28 +124% #3,288
2020s (to 2025) 21 217 238 40 +41% #3,049

Where Rainier is heading

A five-year projection from the recent trend in births per 1,000 boys (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 boys Implied rank
2026 35 0.02 outside top 500
2027 36 0.02 outside top 500
2028 36 0.02 outside top 500
2029 37 0.02 outside top 500
2030 37 0.02 outside top 500

The story of Rainier

Rainier is rare for boys in the United States, ranked #3,362 in 2025 with 35 babies given the name. It is currently rising compared with a decade ago.

Since 1956, 920 American babies have been named Rainier, about 95% boys and 5% girls, making it a genuinely unisex name. Its peak came in 2023, when 51 newborns received the name, the signature sound of the 2020s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Rainier stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Rainier?

The median living Rainier is about 12 years old; half are between 5 and 29. An estimated 900 people named Rainier are alive in the United States today.

median 12 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Rainier year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 – – 35 #3,362
2024 – – 27 #4,050
2023 10 #10,161 41 #3,049
2022 5 #17,217 40 #3,091
2021 6 #14,864 40 #3,064
2020 – – 34 #3,329
2019 11 #9,606 30 #3,696
2018 6 #15,233 32 #3,501
2017 – – 24 #4,306
2016 – – 30 #3,661
2015 8 #12,746 35 #3,288
2014 – – 20 #4,821
2013 – – 23 #4,279
2012 – – 26 #3,976
2011 – – 17 #5,375
2010 – – 20 #4,801
2009 – – 8 #9,664
2008 – – 18 #5,208
2007 – – 14 #6,191
2006 – – 16 #5,471
2005 – – 15 #5,513
2004 – – 15 #5,430
2003 – – 14 #5,484
2002 – – 7 #9,159
2001 – – 9 #7,378
2000 – – 10 #6,712
1995 – – 11 #5,418
1990 – – 8 #6,274
1985 – – 6 #6,333
1980 – – 5 #7,041
1975 – – 10 #3,606
1970 – – 8 #3,750
1965 – – – –
1960 – – – –
1955 – – – –
1950 – – – –
1945 – – – –
1940 – – – –
1935 – – – –
1930 – – – –
1925 – – – –
1920 – – – –
1915 – – – –
1910 – – – –
1905 – – – –
1900 – – – –
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Famous people named Rainier

The most globally famous bearers of the name, ranked by fame across Wikipedia editions (Pantheon project, MIT).

  1. 1 Rainier III, Prince of Monaco Rainier III, Prince of Monaco Prince of Monaco from 1949 to 2005 1923–2005 · Contemporary
  2. 2 Rainier I of Monaco, Lord of Cagnes Rainier I of Monaco, Lord of Cagnes Monégasque ruler (c. 1267–1314) Medieval

Portraits from Wikipedia (Wikimedia Commons).

Frequently asked questions

Quick answers about Rainier, drawn from the same Social Security data as the charts above.

How old is the average Rainier?

The median living Rainier is about 12 years old. Half of all living Rainiers are between 5 and 29 years old.

How many people named Rainier are alive today?

An estimated 900 people named Rainier are alive in the United States, based on 920 recorded births and Social Security life tables.

How popular is the name Rainier in 2025?

Rainier ranked #3,362 among boys' names in the United States in 2025, with 35 babies given the name, according to Social Security Administration data.

How many people are named Rainier?

920 babies have been named Rainier in the United States since 1956, based on Social Security card applications.

When was the name Rainier most popular?

Rainier peaked in 2023, when 51 newborns received the name.

Is Rainier a boy or girl name?

Rainier is used for both: about 5% of babies named Rainier have been girls and 95% boys.

Is the name Rainier rising or falling?

Rainier is on the rise, noticeably more popular now than a decade ago.

Will Rainier become more popular?

Rainier looks stable. If the recent trend holds, we project roughly 37 boys named Rainier in 2030, ranking outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Who are famous people named Rainier?

Well-known people named Rainier include Rainier III, Prince of Monaco (nobleman), Rainier I of Monaco, Lord of Cagnes (politician).

Names like Rainier

Names that sound and feel close to Rainier: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Rainier with similar names → More names starting with R →