Total births
21
Boys' name · since 1915
Lock
Since 1915, U.S. Social Security records show 21 babies named Lock, peaking in 1915. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 21
- total births
- 1915–2025
- years on record
- 1910s
- peak decade
- 52%
- born in that decade
Lock sits outside today's top ranks for boys, with 21 recorded since 1915.
According to the U.S. Social Security Administration, Lock has been recorded 21 times among boys since 1915, though it is not among the currently most-used boys names, with its heaviest use in the 1910s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1915 to 2025.
- 21 total births
- 1915–2025 years on record
- 1910s peak decade
- 52% born in that decade
Data updated Jul 2026
The verdict
21 boys have been named Lock since 1915, peaking in the 1910s, last recorded in 2025.
- 21
- total births
- 1915–2025
- years on record
- 1910s
- peak decade
- 52%
- born in that decade
1910s
Peak decade
52% of everyone ever named Lock was born in this single decade.
1915
Single peak year
6 babies were named Lock in 1915 - its busiest year on record.
Lock's usage pattern, beyond the headline number
Divide Lock's SSA record in two at 1926 and the more recent half accounts for 48% of all births, the earlier half the remaining 52%, a genuinely balanced usage pattern. Its calmest year was 1917, with only 5 births recorded -- set against the 1915 peak of 6, that's the full swing in one name's fortunes.
Lock at a glance
Last recorded 2025Peak year
1915
Current rank
Unranked
Active since
1915
Lock popularity over time
Annual U.S. births registered with the Social Security Administration · 1915–2025
- Peak year (1915)
- 6
- Annual births at peak, across 111 years of records
Lock by decade
Total births in each ten-year window, peak vs trough at a glance
1910s was Lock's strongest decade.
11 babies received the name during that ten-year window, about 52% of all-time use.
Lock births by decade
Total births in each ten-year window
- 1910s
1910s
11 births
- 1920s
1920s
5 births
- 2020s
2020s
5 births
What this shows Peak: 1910s at 11 births (52% of all-time use).
Frequently Asked Questions
How popular is the name Lock? ▼
Lock has been given to 21 babies in the U.S. since 1915, according to SSA data. Its last appearance in the data was 2025. 6 babies were born in 1915, its single highest year.
When was Lock most popular? ▼
Lock was most popular in the 1910s decade with 11 total births. The single peak year was 1915.
How long has the name Lock been used? ▼
Records for Lock go back to 1915, giving 111 years of history through 2025.
What names are similar to Lock? ▼
Names with a similar sound or spelling include Lochlan, Locke, Lochlann, Loc, and 4 more. These share a common prefix and are also used for boys.
What to do with Lock's data
- Lock's usage has stayed within range of its 1910s decade-level peak (11 total births) through the 2020s (5) -- a comparatively stable name, not a fading trend.
- 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 Lock
Nearby Names Like Lock
Names with a similar sound, spelling, or feel to Lock
Lochlan Boy
#779 4,846 births
Locke Boy
#2482 1,063 births
Lochlann Boy
#3500 443 births
Loc Boy
280 births
Locklan Boy
#4548 182 births
Compare Lock side by side: Lock vs Lochlan Lock vs Locke Lock vs Lochlann
Related Names
Names with a similar number of total births
Data Sources
Data as of July 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, 1915–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Lock: Baby Name Since 1915 - 21 Births, Peak 1915." NameAlmanac. Accessed via https://namealmanac.com/name/lock. 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 Lock 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 July 2026.