How many Harry Cook census records do you have?

We have 5262 US Census records for Harry Cook, from 1900 to 1950, across 50 states, DC, and 1 territory.

What's in a Harry Cook census record?

You'll see Harry'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 Harry 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 Harry Cook census records free?

Yes. All Harry 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 Harry Cook?

We have Harry 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 Harry 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 Harry 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.

Harry Cook — US Census Records & Model Tree

We found 5262 free census records for Harry Cook across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 1160 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Harry Cook Census Records by State & County

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Showing of 5262 records for Harry Cook US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Harry L. Jr. Cook		Salem, New Jersey	Delaware	Asst. City Master	Son
1930	Harry Cook		Morris, New Jersey	New Jersey	Mixer	Son
1940	Harry Jr Cook	24	Dorchester-County, South Carolina	South Carolina	Mechanic	Son
1940	Harry Cook	30	York-County, Maine	Maine	Bus Driver	Head
1930	Harry E. Cook		Douglas, Nebraska	Nebraska	Clerk	Son
1920	Harry H. Cook		Shenandoah, Virginia	Virginia	Laborer	Son
1940	Harry Cook	28	Whitman-County, Washington	Washington	Laborer	Son
1930	Harry Cook		King, Washington	Washington	—	Son
1920	Harry Cook		Champaign, Illinois	Illinois	Baker	Son
1920	Harry Cook		Wexford, Michigan	Michigan	Log Cutter	Son
1930	Harry Cook		Essex, New Jersey	New Jersey	Chief Engineer	Head
1940	Harry Cook	58	Dorchester-County, South Carolina	South Carolina	Farmer	Head
1920	Harry Cook		Baltimore, Maryland	Maryland	Merchant	Head
1930	Harry T. Cook		Cumberland, New Jersey	New Jersey	Farmer	Head
1930	Harry Cook		Queens, New York	England	Fireman	Head
1940	Harry Cook	13	Schoharie-County, New York	New York	—	Son
1920	Harry Cook		Fayette, Texas	Texas	Laborer	Son
1930	Harry Cook		Trempealeau, Wisconsin	Illinois	Farmer	Head
1920	Harry E Cook		Bartholomew, Indiana	Indiana	—	Son
1940	Harry A Cook	44	Comanche-County, Oklahoma	Missouri	Farmer	Head
1940	Harry Cook	14	Summit-County, Ohio	Ohio	—	Son
1940	Harry S. Cook	20	Plymouth-County, Massachusetts	Massachusetts	Carpenter	Son
1920	Harry Cook		Philadelphia, Pennsylvania	Russia	Mechanic	Son
1940	Harry Cook	55	Logan-County, Colorado	Nebraska	Farmer	Head
1940	Harry Cook	21	Greene-County, Arkansas	Arkansas	Laborer	Son
1920	Harry Cook		New York, New York	New York	—	Son
1900	Harry S Cook	19	Middlesex, Massachusetts	Massachusetts	Expressman	Son
1910	Harry Cook		Ottawa, Michigan	Michigan	Farm Laborer	Son
1940	Harry Cook	40	Allegheny-County, Pennsylvania	Pennsylvania	Salesman	Head
1930	Harry Cook		Sac, Iowa	Iowa	Laborer	Son

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About Harry Cook US Census Records & Model Tree

We've indexed 5262 free, proprietary US Census records for Harry Cook across 1900–1950, covering 50 states, DC, and 1 territory: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, 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, Puerto Rico, 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 Harry 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 5262 US Census records for Harry Cook, from 1900 to 1950, across 50 states, DC, and 1 territory.
: You'll see Harry'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 Harry 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 Harry 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 Harry 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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