# Kosek (surname)

Source: https://namelineage.com/surname/kosek/  
Publisher: Name Lineage. Counts from the US Census Bureau; origin and etymology from Wiktionary; bearers from Wikidata. Data updated 2026-11-11.

A surname.

| Field | Value |
|---|---|
| Origin | Czech |
| Type | not recorded |
| People in the US (2010 Census) | 1,135 |
| US rank (2010) | 22,618 of 162,253 |
| How often | about 1 in every 272,023 people |
| Change since 2000 | +5.3% (1,078 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | none recorded |

## Etymology

Borrowed from Czech and Polish Kosek: * from a diminutive of kos (“blackbird”); * also a diminutive of kosa (“schythe”). Also as a Czech surname, from Košek, a pet form of the name Koša; see Kosa.

## Who carries it

Share of people named Kosek in the 2010 US Census by the Census's own race and ethnicity groups. The Census suppresses a share when the count behind it is small.

| Group | Share |
|---|---|
| White (not Hispanic) | 98% |
| Hispanic or Latino (any race) | 1.4% |
| Two or more races | 0.5% |

## Similar surnames

Koski, Kosak, Kozak, Kocsis, Kawasaki, Kujawski, Kochis.

## How to read these numbers

A Census count is people alive and counted in 2010, not births, and names occurring fewer than 100 times are not published at all. Ethnicity shares are the Census's own categories.