188 people were registered with the surname SIEJEK (male) in the PESEL register on 20 January 2026.
Surname SIEJEK
People with the surname SIEJEK in the PESEL register on 20 January 2026: 188 men and 191 women. Most registered in: WIELKOPOLSKIE.
6 verified statements
male
188people in the PESEL register · 20 January 2026
about 1 in 112,753
Most registered in: WIELKOPOLSKIE (77.5%, 20 January 2026)
female
191people in the PESEL register · 20 January 2026
about 1 in 112,881
Most registered in: WIELKOPOLSKIE (78.2%, 20 January 2026)
Each 1-in-X is computed within its own dataset. The datasets are different sizes, so these two figures are not compared with each other.
01
How many people have this surname?
The PESEL register publishes two separate surname lists, male and female. We show each figure on its own and never add them up.
male
female
191 people were registered with the surname SIEJEK (female) in the PESEL register on 20 January 2026.
The male and female datasets are separate and are never summed.
02
How rare is this surname?
“1 in X” means that roughly one in every X people on this list has this surname. The bigger X, the rarer the name. The rank counts from the most common surname on the list.
male
about 1 in 112,753
1001k10k100k1M10M
← more commonrarer →
#17,114 rank on the surname list
About 1 in 112,753 people counted in the PESEL register (male) bore the surname SIEJEK on 20 January 2026.
SIEJEK (male) ranked 17,114 among the surnames in this dataset.
- #17,037WYRZYKIEWICZ189
- #17,037ZABAGŁO189
- #17,114SIEJEK this surname188
- #17,209BANIECKI187
- #17,209BARAŃCZUK187
female
about 1 in 112,881
1001k10k100k1M10M
← more commonrarer →
#17,109 rank on the surname list
About 1 in 112,881 people counted in the PESEL register (female) bore the surname SIEJEK on 20 January 2026.
SIEJEK (female) ranked 17,109 among the surnames in this dataset.
Two places above and two below on the same list. Surnames with the same count share a place.
03
Where is it most often registered?
The map and the list show the voivodeships where people with this surname have a registered permanent address. The brighter the colour and the longer the bar, the bigger the share.
male
Among the 178 people with the surname SIEJEK (male) who had a registered voivodeship on 20 January 2026, 77.5% were registered in WIELKOPOLSKIE.
Hover over or tap a voivodeship to see its figures.
Share of people with a registered voivodeship, lowest first:
- 0%–20%
- 20%–40%
- 40%–60%
- 60%–80%
- 80%–100%
- not listed in the dataset — not zero
| Voivodeship | Share | Count |
|---|---|---|
| WIELKOPOLSKIE | 77.5% | 138 |
| DOLNOŚLĄSKIE | 5.1% | 9 |
| POMORSKIE | 4.5% | 8 |
| KUJAWSKO-POMORSKIE | 2.8% | 5 |
| LUBUSKIE | 2.8% | 5 |
| OPOLSKIE | 2.8% | 5 |
| MAŁOPOLSKIE | 2.2% | 4 |
| ŁÓDZKIE | 1.1% | 2 |
| MAZOWIECKIE | 1.1% | 2 |
female
Among the 179 people with the surname SIEJEK (female) who had a registered voivodeship on 20 January 2026, 78.2% were registered in WIELKOPOLSKIE.
Hover over or tap a voivodeship to see its figures.
Share of people with a registered voivodeship, lowest first:
- 0%–20%
- 20%–40%
- 40%–60%
- 60%–80%
- 80%–100%
- not listed in the dataset — not zero
| Voivodeship | Share | Count |
|---|---|---|
| WIELKOPOLSKIE | 78.2% | 140 |
| DOLNOŚLĄSKIE | 5.6% | 10 |
| MAŁOPOLSKIE | 3.9% | 7 |
| KUJAWSKO-POMORSKIE | 3.4% | 6 |
| LUBUSKIE | 3.4% | 6 |
| OPOLSKIE | 2.2% | 4 |
| POMORSKIE | 2.2% | 4 |
| ŁÓDZKIE | 1.1% | 2 |
04
How did this count change between editions of the list?
The PESEL register publishes its lists every year. We show the number of people with this surname on each edition, beside how the whole list changed. We say what changed, not why.
male
The number of people with the surname SIEJEK (male) in the PESEL register changed from 194 on 30 June 2019 to 188 on 20 January 2026: −3.1%. The whole list changed by +6.7% between those editions.
| As of | Share of the list | People |
|---|---|---|
| 30 June 2019* | 1 in 102,370 | 194 |
| 22 January 2020 | 1 in 101,944 | 195 |
| 1 February 2021 | 1 in 102,498 | 195 |
| 27 January 2022 | 1 in 103,608 | 195 |
| 30 January 2023 | 1 in 106,708 | 195 |
| 19 January 2024 | 1 in 107,024 | 196 |
| 22 January 2025 | 1 in 109,876 | 192 |
| 20 January 2026 | 1 in 112,753 | 188 |
* The 2019 files describe their contents in fewer words than the later ones. We read them as the same list: people with their current surname.
female
The number of people with the surname SIEJEK (female) in the PESEL register changed from 212 on 30 June 2019 to 191 on 20 January 2026: −9.9%. The whole list changed by +6.5% between those editions.
| As of | Share of the list | People |
|---|---|---|
| 30 June 2019* | 1 in 95,516 | 212 |
| 22 January 2020 | 1 in 96,287 | 210 |
| 2 February 2021 | 1 in 96,953 | 209 |
| 27 January 2022 | The publisher's file dated 27 January 2022 repeats the data of the previous edition, so it is not shown as an edition of its own. | |
| 30 January 2023 | 1 in 106,847 | 200 |
| 19 January 2024 | 1 in 107,937 | 199 |
| 22 January 2025 | 1 in 111,008 | 194 |
| 20 January 2026 | 1 in 112,881 | 191 |
* The 2019 files describe their contents in fewer words than the later ones. We read them as the same list: people with their current surname.
05
What does this surname mean?
We give a meaning only when a scholarly work supports it. We don't guess.
We have no sourced meaning for this surname. We could not find it in any scholarly work we are able to cite here, and we do not guess at meanings.
06
Where does it appear in old print?
We have not searched Polona's collections for this surname yet.
07
Who well known has this surname?
We have not looked this surname up in Wikidata yet.
Sources on this page
- Official data Ministerstwo Cyfryzacji — Nazwiska występujące w rejestrze PESEL · 20 January 2026 · CC0 1.0 · Dane pochodzą z rejestru PESEL, Ministerstwo Cyfryzacji, dane.gov.pl (CC0 1.0) · dane.gov.pl
How to read these figures
- Wykaz nazwisk męskich osób żyjących (wg pola nazwisko aktualne) występujących w rejestrze PESEL, stan na 20.01.2026
- Surnames occurring once are not published; absence from the dataset is not zero.
- The publisher does not state whether the split is by a person's sex or by the grammatical gender of the surname form. The datasets are therefore neither summed nor compared numerically.
- The male and female datasets are separate and are never summed.
- Wykaz nazwisk żeńskich osób żyjących (wg pola nazwisko aktualne) występujących w rejestrze PESEL, stan na 20.01.2026
- Denominator: 21,197,537 people counted in the PESEL register — the sum of the published counts in this dataset, not Poland's population.
- The 1-in-X figure is rounded; the count of people is exact.
- Denominator: 21,560,302 people counted in the PESEL register — the sum of the published counts in this dataset, not Poland's population.
- A permanent registered residence is an address in the register — not an actual address, and not information about a family's roots.
- Shares are of the people with a registered voivodeship, not of every bearer of the surname.
- The size of the list itself changes between editions, so beside the count we show the share of that edition's list (“1 in X”).
Your result
Counts, rarity, the map and the change on one card, each with its date and source. Share it or save it.