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.
- #9,805 of 72,339
- all-time among girls
- 671
- born since 1921
- 1970s
- peak 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.
- #9,805 of 72,339 all-time among girls
- 671 born since 1921
- 1970s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Reiko ranks #9,805 of 72,339 girls' names by all-time recorded births (highest first). 671 born since 1921, peaking in the 1970s.
- #9,805 of 72,339
- all-time among girls
- 671
- born since 1921
- 1970s
- peak decade
Reiko's 671 recorded births place it above 86.44% of the 72,339 girls names in the full SSA archive.
The state file records this name in 2 jurisdictions, led by California.
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 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
1970s is the heaviest window (139 births, 21% of the file).
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 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% |
88 of 671 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
How popular is the name Reiko? ▼
Where does Reiko sit in the SSA name archive? ▼
When was Reiko most popular? ▼
Where is Reiko most popular? ▼
How long has the name Reiko been used? ▼
What names are similar to Reiko? ▼
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
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
Compare Reiko side by side: Reiko vs Reina Reiko vs Reign Reiko vs Reilly
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Reiko: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1975)
Similar record span (~102 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 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).
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 August 2026.