Lock
#13,147 in 2025Boys' nameMeaning not yet documented
Lock has been given to 21 babies in the U.S. since 1915. In 2025 it ranked #13,147 of 13,926 boys’ names in use. Its peak year was 1915, with 6 recorded.
Babies named Lock, 2025
1 in 663,000
Lock over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Lock?
Everything below is computed from the 2025 data — the most recent year available.
- Among all babies, 2025
- 1 in 663,000
- 5 of 3,315,165 births
- Among boys only
- 1 in 342,000
- <0.01% of boys
- Rank, 2025
- #13,147
- of 13,926 boys’ names in use
- Coin-flip room size
- 459,581 kids
- Even odds of a second one
Where Lock sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 459,581 children born in 2025 and it's an even bet that one of them is another Lock. In a class of 30 the chance is Under 1%.
When Locks were born
Half of everyone ever recorded as Lock was born before 1917 — so the typical Lock is around 108 today.
- Biggest decade
- 1910s
- 52.4% of all use
- Born in the last 25 years
- 23.8%
- Spread across generations
- Recorded since 1950
- 5
- People you could plausibly meet
1910s — 52.4% of all recorded uses (11).
Is Lock rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- —
- Not ranked then
- Rank vs 5 years ago
- New entry
- Not ranked then
- Rank vs 10 years ago
- —
- Not ranked then
- Births vs 10 years ago
- —
- Not published both years
- Share of its own peak
- 83.3%
- Peak was 1915 (6)
- Years since peak
- 110
- Years
- Year-to-year steadiness
- Not enough data
- Too few years
Spellings of Lock
Lock is not the most common spelling — Jack is, with 62.1% against Lock's <0.01%.
Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.
Lock by the numbers
The raw record for each sex the name is used for.
Names similar to Lock
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Lock
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.