The Koski surname

In the 2010 U.S. Census, 5,288 people carried this name — #6,424 among all U.S. surnames, about 1 in every 55,900 people counted. That is down 6% from 5,655 in 2000.

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In Poland’s population register

99 people named Koski have a registered home in Poland.

Of the 119 in Poland’s national register, these are the ones with a permanent address on file. They live in 10 of Poland’s 16 voivodeships, most of all in Łódź.

Too few records to say where it concentrates region by region — these are plain counts, not shares.

Where they live today

Łódź 34
Pomeranian 18
Silesian 17
Greater Poland 15
Lower Silesian 6
Masovian 5
Opole 1
Holy Cross 1

PESEL register, Ministry of Digital Affairs of Poland (dane.gov.pl) — CC0 · living people by voivodeship of permanent residence, 20 January 2026.

In the Nordic population registers

6,640 people named Koski are counted in Finland and Sweden.

Sweden’s figure is from 31 December 2022, the last count Statistics Sweden published. Finland counts its citizens, at home or abroad.

Counted, by country

Finland (2026) 6,352
Sweden (2022) 288

Own calculations based on data from Statistics Sweden (SCB), surnames with at least two bearers, 31 December 2022 — CC BY 4.0 (names with 20 or more bearers shown) · Digital and Population Data Services Agency (DVV), Finland, surname statistics, August 2026 — CC BY 4.0.

In print

Koski in American newspapers,
1917–1927.

Newspaper page from Evening Star carrying the name Koski
Evening Star 1927-01-08
Newspaper page from Putnam Patriot carrying the name Koski
Putnam Patriot 1927-08-05
Newspaper page from The Wheeling Intelligencer carrying the name Koski
The Wheeling Intelligencer 1917-07-12

Chronicling America, Library of Congress — digitised newspapers in the public domain · 8,705 pages in all carry the name.

In print

Koski in Australian newspapers,
1890s–1970s.

236 articles name a Mr, Mrs or Miss Koski. The most, 69, date from the 1930s. Weighed against how much of each state’s press from the same decades has been digitised, it stands out most in Queensland, at 2.1 times its expected share.

Articles, by state

Queensland 108
New South Wales 76
Victoria 20
ACT (Canberra) 12
South Australia 12
Western Australia 5
Tasmania 3

Trove, National Library of Australia (trove.nla.gov.au) · articles in its digitised newspapers that name a Mr, Mrs or Miss Koski.

Who carried it

People named Koski,
with a public archive behind them.

  • Yrjö Korholin-Koski
    Yrjö Korholin-Koski 1900–1978 · marathon runner
  • Kylli Koski
    Kylli Koski 1906–1997 · illustrator
  • Tapio Koski
    Tapio Koski 1920–2009 · business executive
  • Samuel Valentin Koski 1867–1934
  • Usko Koski 1898–1973 · politician
  • Kosti Koski 1905–1944 · actor

Wikidata (CC0) · portraits via Wikimedia Commons, shown cropped, in the public domain or CC0 · 10 lives in all are documented under this name.

In the public record

People named Koski,
in the records of 6 countries.

Soldiers, farmers, migrants and neighbours who carried the name and left a trace in public archives. Everyone shown here died long ago or was born more than a century ago.

United States996 records

996 records of the Koski name in the United States
  • U.S. alien registration index, 1940–1955 491
  • U.S. Army enlistment records, World War II 252
  • U.S. veterans' cemetery records, burials to 2001 94
  • Passenger arrivals in the United States, 1820–1912 67
  • New York City birth, marriage and death certificates 67
  • New York State death index (outside NYC), 1957–2001 19
  • U.S. service members who died in the Korean War 3
  • U.S. service members who died in the Vietnam War 3
  1. A United States Selective Service registration card, 1942
    Example: U.S. registration card, 1942
    Military record Stanley J. Koski

    Born 1915 in New Jersey. Enlisted 1940 at Newark; machinist from Essex County. U.S. Army veteran of World War II; died 1964, buried at Beverly National Cemetery, New Jersey.

    U.S. National Archives, WWII Army Enlistment Records (public domain); U.S. Department of Veterans Affairs, Gravesite Locator (CC0)
  2. A passenger manifest of the S.S. St. Paul, arriving at New York in 1903
    Example: passenger manifest, 1903
    Passenger record Pekka Koski

    Arrived at New York in 1892 aboard the Stuttgart from Bremen, aged 45; servant. From Finland, Russia; bound for New York.

    U.S. National Archives, Castle Garden Immigration Center Collection, Ship Passenger Records (unrestricted)
  3. Names engraved on the Vietnam Veterans Memorial, Washington, D.C.
    Example: U.S. war memorial
    War record Richard Arne Koski

    Born 1942; from Pengilly, Minnesota. U.S. Army, field artillery unit commander; killed in action 1968 in Dinh Tuong, South Vietnam.

    U.S. National Archives, Defense Casualty Analysis System (public domain)

Showing 3 of 996 records for Koski in the United States.

Counts: U.S. National Archives, Flexoline Index Data File (public domain) · U.S. National Archives, WWII Army Enlistment Records (public domain) · U.S. Department of Veterans Affairs, Gravesite Locator (CC0) · U.S. National Archives, Castle Garden Immigration Center Collection, Ship Passenger Records (unrestricted) · NYC Department of Records & Information Services, Historical Vital Records (NYC Open Data) · New York State Department of Health, Genealogical Research Death Index · U.S. National Archives, Defense Casualty Analysis System (public domain). Example pages, not the records of the people shown: U.S. Selective Service registration card, 1942 (public domain); Passenger manifest of the S.S. St. Paul, New York, 1903 (public domain); Vietnam Veterans Memorial, photo by U.S. Army Sgt. 1st Class Michael J. Carden, 2009 (public domain).

Finland169 records

169 records of the Koski name in Finland
  • Finland's war dead, 1939–1945 105
  • Finland's war dead, 1914–1922 64
  1. A page of the Livre d’or of the French war dead, Paris
    Example: roll of the war dead
    War record Osmo Olavi Koski

    Born 1915 in Turtola; farmer. Died in 1939 during Finland's wars of 1939–1945; buried in Pello.

    Kansallisarkisto, via WarSampo (CC BY 4.0)
  2. A page of the Livre d’or of the French war dead, Paris
    Example: roll of the war dead
    War record Aino Aleksandra Kallentytär Koski

    Born 1896 in Iitti; servant. Died in 1918 in Helsinki, one of the dead of Finland's wars of 1914–1922.

    Kansallisarkisto, via Sotasurmasampo (CC BY 4.0)
  3. A page of the Livre d’or of the French war dead, Paris
    Example: roll of the war dead
    War record Jorma Koski

    Born 1921 in Kristiinankaupunki; student. Died in 1941 during Finland's wars of 1939–1945; buried in Kotka.

    Kansallisarkisto, via WarSampo (CC BY 4.0)

Showing 3 of 169 records for Koski in Finland.

Counts: Kansallisarkisto, via WarSampo (CC BY 4.0) · Kansallisarkisto, via Sotasurmasampo (CC BY 4.0). Example pages, not the records of the people shown: Livre d’or of the war dead, Paris, Ministère des pensions, Archives nationales (CC0).

Canada13 records

13 records of the Koski name in Canada
  • Mountain View Cemetery, Vancouver 9
  • City of Winnipeg cemetery records 3
  • City of Calgary cemetery records 1
  1. Fairview Lawn Cemetery in Halifax, Nova Scotia
    Example: Canadian cemetery
    Burial record William Koski

    Died 1999, aged 76; buried at Brookside Cemetery, Winnipeg, Manitoba.

    City of Winnipeg. Contains information licensed under the Open Government Licence – Winnipeg.
  2. Fairview Lawn Cemetery in Halifax, Nova Scotia
    Example: Canadian cemetery
    Burial record Marvin Arthur Koski

    Buried in 1985 at Queen's Park Cemetery, Calgary, Alberta, aged 41.

    City of Calgary. Contains information licensed under the Open Government Licence – City of Calgary.
  3. Fairview Lawn Cemetery in Halifax, Nova Scotia
    Example: Canadian cemetery
    Burial record Victor Koski

    Buried in 1987 at Mountain View Cemetery, Vancouver, British Columbia.

    City of Vancouver. Contains information licensed under the Open Government Licence – Vancouver.

Showing 3 of 13 records for Koski in Canada.

Counts: City of Vancouver. Contains information licensed under the Open Government Licence – Vancouver. · City of Winnipeg. Contains information licensed under the Open Government Licence – Winnipeg. · City of Calgary. Contains information licensed under the Open Government Licence – City of Calgary. Example pages, not the records of the people shown: Fairview Lawn Cemetery, Halifax, photo by Edgar El (CC BY 3.0).

Germany8 records

8 records of the Koski name in Germany Germany's First World War casualty lists, 1914–1919
  1. A page of the German First World War casualty lists, 18 April 1918
    Example: German casualty list, 1918
    Casualty list Albert Koski

    From Bergfriede, Osterode. Reported dead in the Prussian casualty list of 26 May 1915 (Infantry Regiment No. 135).

    Verein für Computergenealogie e.V. (2026). Deutsche Verlustlisten des Ersten Weltkriegs – Datensammlung (Version 1.0), DOI 10.5281/zenodo.18330751 (CC0)
  2. A page of the German First World War casualty lists, 18 April 1918
    Example: German casualty list, 1918
    Casualty list Otto Koski

    From Weepers, Mohrungen. Reported dead in the Prussian casualty list of 26 April 1915.

    Verein für Computergenealogie e.V. (2026). Deutsche Verlustlisten des Ersten Weltkriegs – Datensammlung (Version 1.0), DOI 10.5281/zenodo.18330751 (CC0)

Showing 2 of 8 records for Koski in Germany.

Counts: Verein für Computergenealogie e.V. (2026). Deutsche Verlustlisten des Ersten Weltkriegs – Datensammlung (Version 1.0), DOI 10.5281/zenodo.18330751 (CC0). Example pages, not the records of the people shown: Deutsche Verlustlisten, Prussian list 1116, 18 April 1918 (scan via Wikimedia Commons, CC BY 3.0).

Australia4 records

4 records of the Koski name in Australia
  • Victoria passenger lists, 1839–1923 2
  • NSW convict, estate and railway indexes 1
  • Victoria wills and probate, deaths to 2001 1
  1. A passenger manifest of the S.S. St. Paul, arriving at New York in 1903
    Example: passenger manifest, 1903
    Passenger record Saml Koski

    Arrived in Victoria in 1901 aboard the Oroya, aged 32.

    Public Record Office Victoria (CC BY 4.0)
  2. A petition to the probate court of St. Louis, 1848
    Example: probate petition, 1848
    Probate record Lena Koski

    Of N S W, Victoria; died 1952.

    Public Record Office Victoria (CC BY 4.0)

Showing 2 of 4 records for Koski in Australia.

Counts: Public Record Office Victoria (CC BY 4.0) · Museums of History NSW – State Archives Collection (CC BY). Example pages, not the records of the people shown: Passenger manifest of the S.S. St. Paul, New York, 1903 (public domain); Petition to the probate court, St. Louis, 1848, Missouri Historical Society (public domain).

France3 records

3 records of the Koski name in France France's national death register, 1970–2001
  1. A page of the death register of Nice, 1930
    Example: French death register, 1930
    Death record Leo Josef Koski

    Born 1932 in Germany; died 1994 in Hambach (Moselle).

    Insee, Fichier des personnes décédées (Licence Ouverte)
  2. A page of the death register of Nice, 1930
    Example: French death register, 1930
    Death record Sheila Koski

    Born 1915 in the United Kingdom; died 1993 in Cannes (Alpes-Maritimes).

    Insee, Fichier des personnes décédées (Licence Ouverte)

Showing 2 of 3 records for Koski in France.

Counts: Insee, Fichier des personnes décédées (Licence Ouverte). Example pages, not the records of the people shown: Death register of Nice, 1930, Archives départementales des Alpes-Maritimes (public domain).

Nearby in the index

Surnames next to Koski.

When the index is not enough

This page says where Koski is.
A volume says what happened to it.

Every page in the index is free and stays free. The Heritage Volume is the long form: the full paper trail, the arms, the crossing — bound, and yours.

See the Koski volume
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