Humanverse

Jacek

Jacek is a boy's name that peaked in 2013, when it was the 2,998th most popular in the United States. In 2025 it ranked 12,008th. About 520 Jaceks are alive in the United States today, and half of them are over 17.

Popularity, 1880–2025

Births per year, 1880 to 2025 0 10 20 30 40 1880 1900 1920 1940 1960 1980 2000 2020

boys named Jacek

By the numbers

Total US births
532
Estimated living today
520
Median age today
17
Peak year
2013
Best rank
2,998th
Rank in 2025
12,008th
First recorded
1965

How old the living Jaceks are

Born with the name each year, and how many of them are alive today, 1880 to 2025 0 10 20 30 40 1880 1900 1920 1940 1960 1980 2000 2020

born that year still alive today

Of the 532 babies given the name since 1965, about 520 are alive — 98 in every hundred. The dotted line is the median: half were born before 2008 and half after.

An estimate, not a count. SSA births aged forward through SSA cohort life tables, which know nothing about who left the country or arrived in it — so for a name that mostly came to America rather than being born in it, this is a floor rather than a figure. Where you fall among living Americans.

Notable Jaceks

People named Jacek with articles in the most Wikipedia languages. Data from Wikidata (CC0).

Where Jacek is most common

Total births recorded in each state since 1910. Browse names by state.

Names of 2013

The most popular boys’ names the year Jacek peaked:

All the names of 2013

Jacek elsewhere

CountrySpelling BirthsBest rank
Poland boys Jacek 8,373 birth registrations 49th
Norway boys Jacek 1,183 116th
England and Wales boys Jacek 101 1,596th
Ireland boys Jacek 17 529th
Scotland boys Jacek 4 544th

Counts come from each country's own records and are not comparable with the US figures above, which cover different years and a different definition of a recorded name. Where a country writes the name several ways, the spellings are added together and the most common is shown. A row marked name registrations is counting something else: Portugal ranks each of a child's two given names separately, so a girl registered Maria Leonor is in both the Maria row and the Leonor row, and that figure is not a number of children.

Jacek: rank by region

In 2025, Jacek was given 2 times or more in 13 regions of Poland.

Region Spelling Place Children
Dolnośląskie Jacek 128 9
Lubelskie Jacek 125 3
Lubuskie Jacek 138 2
Łódzkie Jacek 183 2
Małopolskie Jacek 127 10
Mazowieckie Jacek 159 11
Opolskie Jacek 79 6
Podkarpackie Jacek 135 3
Pomorskie Jacek 152 5
Śląskie Jacek 145 7
Świętokrzyskie Jacek 100 2
Warmińsko-Mazurskie Jacek 103 4
Wielkopolskie Jacek 151 7

Each of these is the top of a list the statistics office cut off somewhere – Poland below 2 children – and published nothing after. So a region missing here is one where the name fell outside what was published, not one where it went unused. Places are shared where names tie, and the further down a list a place is, the more names can share it.

Jacek among the living

How many people each country's register counts under the name, rather than how many were given it in any one year. Each register was read on one date, and they are not the same date.

Country Spelling First forename Any forename
Finland boys Jacek 7 18

A count of people on a register – Finland on 4 August 2026 – and not of births, so it cannot be compared with the figures above. Names with very few bearers are withheld, and a dash in the first-forename column means the register would not say rather than that nobody goes by it.

Related names

Jacek against another name

Two names on one chart, with the year one overtook the other.

Compare Jacek with a name of your own

Try it on yourself

Source: US Social Security Administration, national and state baby-name files, 1880–2025. Counts include only births registered with the SSA, and names with fewer than five births in a year are not published. The living estimate applies SSA cohort life tables to those births; it counts people born in the United States, so it misses anyone who arrived later and anyone who has left.