How many William Cook census records do you have?

We have 22948 US Census records for William Cook, from 1900 to 1950, across 50 states, DC, and 1 territory.

What's in a William Cook census record?

You'll see William's age, birthplace, occupation, and relationship to the head of household — plus everyone else who lived in the same home. For 1940 and 1950 records, you can also view the original handwritten census page.

How do I use census records for family research?

Census records are a snapshot of a family every 10 years. You can follow William Cook's household over time — see when children appear, when people move states, and who's living together. YourRoots connects census data with Tree Matching and AI tools so you can build out your tree faster.

Are William Cook census records free?

Yes. All William Cook census records on YourRoots are free to search and view — no subscription required. We built our own index from the original federal census images.

Which census years and states cover William Cook?

We have William Cook records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find William Cook in the census?

Start by narrowing the year and state. If you know an approximate birth year, use the age column to match — census age minus the census year gives you a birth year estimate. Household members, birthplace, and occupation help confirm you have the right person.

What is the Model Tree for William Cook?

The Model Tree is YourRoots' unique feature that links a person across multiple census decades and reconstructs their likely family — parents, siblings, spouse, and children — based on household patterns. It turns isolated records into a connected family network.

Where does the census data come from?

All records originate from the US Federal Census microfilm digitized by NARA (National Archives and Records Administration). YourRoots re-indexed the original page images using modern AI, catching names and details that older transcriptions missed.

William Cook — US Census Records & Model Tree

We found 22948 free census records for William Cook across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 2375 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

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Showing of 22948 records for William Cook US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	William M Cook		Allen, Indiana	Indiana	Asst Surveyor	Son
1920	William Cook		Russell, Alabama	Alabama	Laborer	Head
1920	William Cook		Davidson, Tennessee	Tennessee	Elevator Man	Son
1920	William Cook		Fairfield, South Carolina	South Carolina	—	Head
1910	William Cook		Johnston, North Carolina	North Carolina	None	Son
1940	William Cook	23	Knott-County, Kentucky	Kentucky	—	Son
1910	William Cook		Payne, Oklahoma	Kentucky	—	Son
1930	William Cook		Rains, Texas	Texas	Laborer	Son
1940	William Cook	29	Shelby-County, Kentucky	Kentucky	Farmer	Head
1940	William Cook	29	Linn-County, Iowa	Iowa	Packer-Man	Son
1920	William S. Cook		Douglas, Nebraska	Nebraska	Mail Carrier	Son
1940	William S. Cook	24	Crow-Wing-County, Minnesota	Minnesota	File Clerk	Son
1930	William J Cook		Brunswick, North Carolina	North Carolina	Laborer	Son
1940	William Cook	43	Androscoggin-County, Maine	Maine	Barber	Head
1940	William A Cook	34	Monroe-County, Arkansas	Arkansas	Laborer	Head
1940	William Cook	26	Montgomery-County, Alabama	Alabama	Chauffeur	Son
1920	William D. Cook		Essex, Massachusetts	Massachusetts	Gas Engineer	Son
1920	William Cook		Jackson, Florida	Florida	Laborer	Head
1920	William C. Cook		Ingham, Michigan	Michigan	—	Son
1910	William E. Cook		Perry, Alabama	Alabama	None	Son
1940	William J. Jr. Cook	27	Williamsburg-County, South Carolina	South Carolina	Manager	Son
1940	William Cook	24	Atascosa-County, Texas	Texas	—	Son
1940	William Cook	25	Jefferson-County, Kentucky	Kentucky	Mail Carrier	Head
1920	William Cook		Burlington, New Jersey	New Jersey	Weaver	Son
1940	William Cook	26	Wayne-County, Michigan	Michigan	Inspector	Son
1940	William C Cook	39	Orange-County, California	Michigan	Ranch Co	Head
1940	William Cook	33	Greene-County, Indiana	Indiana	Laborer	Son
1920	William Cook		Wayne, Indiana	Indiana	Laborer	Son
1910	William E Cook		Middlesex, Massachusetts	Massachusetts	Machinist	Head
1930	William J Cook		Ohio, West Virginia	England	Supt. Galvanizing	Head

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About William Cook US Census Records & Model Tree

We've indexed 22948 free, proprietary US Census records for William Cook across 1900–1950, covering 50 states, DC, and 1 territory: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming.

Each record includes our Model Tree — a longitudinal reconstruction that links the same person across census decades using machine learning (XGBoost record linkage). Every link carries a confidence score: Verified (≥0.99), Confirmed (≥0.95), or Linked (lower confidence). This tells you not just what the census says, but how reliably we've connected records across time.

Every record also shows the full household — who William lived with, their ages, birthplaces, and occupations. For 1940 and 1950 records, you can view the original handwritten census page from the National Archives.

How we build the Model Tree. YourRoots independently indexes US Census records from NARA microfilm and links persons across decades using XGBoost-based record linkage. Each link's confidence is a per-pair match score from the model. Household corroboration (co-residents appearing on the same census pages in multiple years) strengthens the signal. The Model Tree is not a family tree submitted by users — it's reconstructed from the census data itself.

Last updated: July 30, 2026

Frequently Asked Questions

: We have 22948 US Census records for William Cook, from 1900 to 1950, across 50 states, DC, and 1 territory.
: You'll see William's age, birthplace, occupation, and relationship to the head of household — plus everyone else who lived in the same home. For 1940 and 1950 records, you can also view the original handwritten census page.
: Census records are a snapshot of a family every 10 years. You can follow William Cook's household over time — see when children appear, when people move states, and who's living together. YourRoots connects census data with Tree Matching and AI tools so you can build out your tree faster.
: Yes. All William Cook census records on YourRoots are free to search and view — no subscription required. We built our own index from the original federal census images.
: We have William Cook records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. Use the year and state filters above to narrow your results.
: Start by narrowing the year and state. If you know an approximate birth year, use the age column to match — census age minus the census year gives you a birth year estimate. Household members, birthplace, and occupation help confirm you have the right person.
: The Model Tree is YourRoots' unique feature that links a person across multiple census decades and reconstructs their likely family — parents, siblings, spouse, and children — based on household patterns. It turns isolated records into a connected family network.
: All records originate from the US Federal Census microfilm digitized by NARA (National Archives and Records Administration). YourRoots re-indexed the original page images using modern AI, catching names and details that older transcriptions missed.

Other Cook US Census Records

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