Total births
671
Girls' name · since 1921
Reiko
Since 1921, U.S. Social Security records show 671 babies named Reiko, peaking in 1975. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 671
- total births
- 1921–2023
- years on record
- 1970s
- peak decade
- 21%
- born in that decade
671 girls have been named Reiko since 1921, though it isn't currently a top-ranked name.
Reiko has 671 recorded births among girls since 1921, per the U.S. Social Security Administration, though it falls outside today's most-used girls names, busiest in the 1970s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1921 to 2023.
- 671 total births
- 1921–2023 years on record
- 1970s peak decade
- 21% born in that decade
Data updated Jun 2026
The verdict
671 girls have been named Reiko since 1921, peaking in the 1970s, last recorded in 2023.
- 671
- total births
- 1921–2023
- years on record
- 1970s
- peak decade
- 21%
- born in that decade
1970s
Peak decade
21% of everyone ever named Reiko was born in this single decade.
1975
Single peak year
23 babies were named Reiko in 1975 - its busiest year on record.
Reiko's usage pattern, beyond the headline number
Splitting Reiko's full recorded timeline at 1979, 45% of its total births fall in the more recent half of the record versus 55% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1921, with just 5 recorded births -- worth weighing against the 1975 peak of 23 to see the full range of the name's swing in popularity.
Reiko at a glance
Last recorded 2023Peak year
1975
Current rank
Unranked
Active since
1921
Reiko popularity over time - girls
Annual U.S. births registered with the Social Security Administration · 1921–2023
- Peak year (1975)
- 23
- Annual births at peak, across 103 years of records
Reiko popularity over time - boys
19 total births recorded since 1975 (Reiko as boys' name)
Reiko by decade
Total births in each ten-year window, peak vs trough at a glance
1970s was Reiko's strongest decade.
139 babies received the name during that ten-year window, about 21% of all-time use.
Reiko births by decade
Total births in each ten-year window
- 1920s 42
1920s
42 births
- 1930s
1930s
86 births
- 1940s 52
1940s
52 births
- 1960s
1960s
64 births
- 1970s
1970s
139 births
- 1980s
1980s
73 births
- 1990s
1990s
73 births
- 2000s 55
2000s
55 births
- 2010s
2010s
59 births
- 2020s 28
2020s
28 births
What this shows Peak: 1970s at 139 births (21% of all-time use).
How Reiko compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 girls names closest to Reiko's total volume
Reiko vs 15 similarly-sized girls names
Reiko by state
Where Reiko concentrates geographically, total births since 1921
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 88 | 13.1% |
| #2 | Hawaii | | 5 | 0.7% |
California share of Reiko's total US births 13.1%
Even split
88 of 671 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
How popular is the name Reiko? ▼
Reiko has been given to 671 babies in the U.S. since 1921, according to SSA data. Its last appearance in the data was 2023. 23 babies were born in 1975, its single highest year.
When was Reiko most popular? ▼
Reiko was most popular in the 1970s decade with 139 total births. The single peak year was 1975.
Where is Reiko most popular? ▼
The top states for the name Reiko are California (88 births), Hawaii (5 births).
How long has the name Reiko been used? ▼
The SSA has tracked Reiko since 1921 -- 103 years through the most recent 2023 data.
What names are similar to Reiko? ▼
Names with a similar sound or spelling include Reina, Reign, Reilly, Reita, and 4 more. These share a common prefix and are also used for girls.
What to do with Reiko's data
- Reiko's decade-level peak was the 1970s (139 total births); usage has since declined to 28 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- California records the most Reikos (88 births) -- see the full state breakdown if geography matters to your decision. California names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Reiko
Nearby Names Like Reiko
Names with a similar sound, spelling, or feel to Reiko
Reina Girl
#552 14,080 births
Reign Girl
#435 7,989 births
Reilly Girl
#2709 5,528 births
Reita Girl
1,364 births
Reid Girl
#4491 992 births
Compare Reiko side by side: Reiko vs Reina Reiko vs Reign Reiko vs Reilly
Related Names
Names with a similar number of total births
Data Sources
Data as of June 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1921–2023 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Reiko: Baby Name Since 1921 - 671 Births, Peak 1975." NameAlmanac. Accessed via https://namealmanac.com/name/reiko. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Reiko draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.