How many Harold Cook census records do you have?

We have 3355 US Census records for Harold Cook, from 1900 to 1950, across 50 states and DC.

What's in a Harold Cook census record?

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

Yes. All Harold 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 Harold Cook?

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

How do I find Harold 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 Harold 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.

Harold Cook — US Census Records & Model Tree

We found 3355 free census records for Harold Cook across 6 census years (1900–1950), in 50 states and DC and 1008 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Harold Cook Census Records by State & County

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Showing of 3355 records for Harold Cook US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	Harold Cook		New York, New York	New York	Chauffeur	Son
1940	Harold E. Cook	31	Marion-County, Indiana	Indiana	Printer	Head
1940	Harold Cook	26	Jefferson-County, Missouri	Missouri	Shoe Shiner	Son
1940	Harold Cook	23	Clark-County, Ohio	Ohio	Filling Station Attendant	Son
1940	Harold Cook	40	Delaware-County, New York	New York	Truck Driver	Head
1920	Harold Cook		Walla Walla, Washington	Washington	—	Son
1940	Harold Cook	29	Meade-County, Kansas	Kansas	Trucker	Head
1940	Harold E. Cook	26	Whitman-County, Washington	Washington	Farm Labor	Head
1940	Harold Cook	25	Jefferson-County, Pennsylvania	Pennsylvania	Farmer	Son
1940	Harold Cook	28	Clay-County, Missouri	Missouri	Truck Driver	Son
1940	Harold M. Cook	21	Putnam-County, Indiana	Indiana	Station Webq	Son
1940	Harold Cook	23	Erie-County, New York	New York	Labor	Son
1940	Harold Cook	26	St.-Joseph-County, Indiana	Indiana	Day Laborer	Son
1940	Harold Cook	42	Uintah-County, Utah	Utah	Farmer	Head
1940	Harold Cook	20	Greene-County, Pennsylvania	Pennsylvania	Laborer	Son
1940	Harold Cook	15	Twin-Falls-County, Idaho	Idaho	Farmer	Son
1920	Harold Cook		Bristol, Massachusetts	Massachusetts	—	Son
1940	Harold Cook	17	Montgomery-County, Indiana	Indiana	—	Son
1930	Harold Cook		Hennepin, Minnesota	Minnesota	—	Son
1920	Harold Cook		Catawba, North Carolina	North Carolina	Speeder	Son
1940	Harold Cook	12	Becker-County, Minnesota	Minnesota	—	Son
1940	Harold Cook	17	Morgan-County, Colorado	Colorado	Laborer	Son
1920	Harold Cook		Steuben, New York	New York	—	Son
1940	Harold Cook	11	Fulton-County, Georgia	Georgia	—	Son
1940	Harold Cook	11	Atchison-County, Missouri	Missouri	—	Son
1940	Harold Cook	22	Bibb-County, Georgia	Georgia	Truck Driver	Son
1940	Harold Cook	23	Henry-County, Georgia	Georgia	Operator	Son
1930	Harold W Cook		Pulaski, Arkansas	Arkansas	Painter	Son
1930	Harold Cook		Rankin, Mississippi	Mississippi	—	Son
1940	Harold Cook	47	Chaffee-County, Colorado	Kansas	Farmer	Head

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About Harold Cook US Census Records & Model Tree

We've indexed 3355 free, proprietary US Census records for Harold Cook across 1900–1950, covering 50 states and DC: 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, 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 Harold 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 3355 US Census records for Harold Cook, from 1900 to 1950, across 50 states and DC.
: You'll see Harold'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 Harold 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 Harold 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 Harold Cook records from the 1900 through 1950 US Federal Census, across 50 states and DC. 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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