Unisex name · since 1991

Dillen

Dillen has 691 recorded births since 1991 in federal Social Security data, most heavily in 2003 -- full year-by-year trend, decade aggregates, and state rankings follow.

#6,495 of 45,481
all-time among boys
691
born since 1991
2000s
peak decade

Dillen sits outside today's top ranks for boys, with 691 recorded since 1991.

Social Security Administration records show Dillen recorded 691 times among boys since 1991, though it doesn't currently rank among the most-used boys names, peaking in the 2000s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1991 to 2023.

  • #6,495 of 45,481 all-time among boys
  • 691 born since 1991
  • 2000s peak decade

Data updated Aug 2026

The verdict

According to the U.S. Social Security Administration, Dillen ranks #6,495 of 45,481 boys' names by all-time recorded births (highest first). 691 born since 1991, peaking in the 2000s.

#6,495 of 45,481
all-time among boys
691
born since 1991
2000s
peak decade
Above the archive median
All-time archive position

Dillen's 691 recorded births place it above 85.7% of the 45,481 boys names in the full SSA archive.

4 jurisdictions
State-record footprint

The state file records this name in 4 jurisdictions, led by California.

Dillen's usage pattern, beyond the headline number

Splitting Dillen's full recorded timeline at 2006, 34% of its total births fall in the more recent half of the record versus 66% in the earlier half -- the name was more prevalent in its earlier era than it is today. Its quietest year on record was 2019, with just 5 recorded births -- worth weighing against the 2003 peak of 40 to see the full range of the name's swing in popularity.

Dillen popularity over time - boys

Annual U.S. births registered with the Social Security Administration · 1991–2023

Last recorded 2023
Peak year (2003)
40
Annual births at peak, across 33 years of records
01020304050 199119951999200320072011201520192023 5

Dillen popularity over time - girls

56 total births recorded since 2000 (Dillen as girls' name)

Unisex variant - 56 births
05101520 2000200220032004200520062007 5

Dillen by decade

2000s is the heaviest window (306 births, 44% of the file).

2000s was Dillen's strongest decade.

306 babies received the name during that ten-year window, about 44% of all-time use.

Dillen births by decade

Total births in each ten-year window

births

What this shows Peak: 2000s at 306 births (44% of all-time use).

Source U.S. Social Security Administration · Baby Names As of August 2026

How Dillen compares to similarly-sized names

Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Dillen's total volume

Dillen vs 15 similarly-sized boys names Scatter plot of 16 data points. 0%5%10%15%20% 050100150200 New & already peakedOld name, single-era peakNew & still diversifyingLong history, steady all along Years in SSA records % of total births in the single peak year -102, 15.6%-22, 8.8%-43, 4.8%-146, 2.7%-37, 10.7%-46, 9%-27, 8.2%-57, 4%-38, 5.4%-35, 6.9%-33, 6.2%-24, 8.8%-21, 7.7%-50, 5.2%-129, 5.1%Dillen-33, 5.8%Dillen
Dillen vs 15 similarly-sized boys names

Dillen by state

Where Dillen concentrates geographically, total births since 1991

Geographically diffuse
Top 4 states by recorded births for the name Dillen
Rank State Visual share Births Share of total
#1 California
22 3.2%
#2 Indiana
8 1.2%
#3 Ohio
5 0.7%
#4 Texas
5 0.7%
California share of Dillen's total US births 3.2%
Even split

22 of 691 births nationwide. Compared to a flat distribution across 4 reporting states.

Frequently Asked Questions

How popular is the name Dillen?
691 babies have been named Dillen since 1991. All-time, it sits at #6,495 of 45,481 boys' names by recorded births. It was last recorded in 2023. The peak year was 2003 with 40 births.
Where does Dillen sit in the SSA name archive?
According to the U.S. Social Security Administration, Dillen ranks #6,495 of 45,481 boys' names by all-time recorded births (highest first). All-time ordinal matches browse popularity (total births DESC); the current ordinal uses the null SSA file. See /methodology#corpus-placement.
When was Dillen most popular?
Dillen was most popular in the 2000s decade with 306 total births. The single peak year was 2003.
Where is Dillen most popular?
The top states for the name Dillen are California (22 births), Indiana (8 births), Ohio (5 births).
Is Dillen a unisex name?
Yes, Dillen is used for both boys and girls. As a boy's name it has 691 births, and as a girl's name it has 56 births.
How long has the name Dillen been used?
Records for Dillen go back to 1991, giving 33 years of history through 2023.
What names are similar to Dillen?
Names with a similar sound or spelling include Dillon, Dillan, Dilan, Dillard, and 4 more. These share a common prefix and are also used for boys.

What to do with Dillen's data

  • Dillen's decade-level peak was the 2000s (306 total births); usage has since declined to 10 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
  • California records the most Dillens (22 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 Dillen

Nearby Names Like Dillen

Names with a similar sound, spelling, or feel to Dillen

Names with a similar number of total births

Nationwide names with similar peak year or record span

Two nationwide peer axes for Dillen: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.

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, 1991–2023 (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 Dillen 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.