How many Thomas Mcgrath census records do you have?

We have 4525 US Census records for Thomas Mcgrath, from 1900 to 1950, across 49 states and DC.

What's in a Thomas Mcgrath census record?

You'll see Thomas'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 Thomas Mcgrath'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 Thomas Mcgrath census records free?

Yes. All Thomas Mcgrath 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 Thomas Mcgrath?

We have Thomas Mcgrath records from the 1900 through 1950 US Federal Census, across 49 states and DC. Use the year and state filters to narrow your results.

How do I find Thomas Mcgrath 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 Thomas Mcgrath?

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.

Thomas Mcgrath — US Census Records & Model Tree

We found 4525 free census records for Thomas Mcgrath across 6 census years (1900–1950), in 49 states and DC and 468 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Thomas Mcgrath Census Records by State & County

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Showing of 4525 records for Thomas Mcgrath US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Thomas J. Mcgrath	70	Kings-County, New York	New York	Retired	Head
1920	Thomas Mcgrath		New York, New York	New York	Office Clerk	Son
1920	Thomas Mcgrath		New York, New York	New York	Seaman	Son
1930	Thomas Mcgrath		Kings, New York	New York	—	Son
1940	Thomas Mcgrath	26	Bronx-County, New York	New York	—	Son
1940	Thomas Mcgrath	40	Richmond-County, New York	New York	Policeman	Head
1940	Thomas Mcgrath	35	Essex-County, Massachusetts	Maine	Combing Room	Head
1920	Thomas Mcgrath		Kings, New York	New York	—	Son
1940	Thomas Mcgrath	35	Schenectady-County, New York	New York	Welder	Head
1930	Thomas Mcgrath		Champaign, Illinois	Illinois	Farmer	Son
1940	Thomas Mcgrath	38	Kings-County, New York	New York	Clerk	Head
1930	Thomas T. Mcgrath		Albany, New York	New York	Clerk	Son
1940	Thomas Mcgrath	50	Bronx-County, New York	New York	Clerk	Head
1930	Thomas Mcgrath		New York, New York	Ireland	Mfg	Head
1940	Thomas Mcgrath	43	Atlantic-County, New Jersey	Pennsylvania	Carpenter	Head
1940	Thomas Mcgrath	41	Essex-County, New Jersey	Pennsylvania	Health Inspector	Head
1920	Thomas J. Mcgrath		Suffolk, Massachusetts	Ireland	Teamster	Head
1940	Thomas Mcgrath	60	Queens-County, New York	Ireland	Freight Handler	Head
1940	Thomas Mcgrath	63	Queens-County, New York	New York	Manager	Head
1920	Thomas Mcgrath		Kings, New York	New York	Mailer	Head
1940	Thomas Mcgrath	72	Hennepin-County, Minnesota	Ohio	Sheet Metal Worker	Head
1940	Thomas Mcgrath	51	New-York-County, New York	New York	Lawyer	Head
1910	Thomas Mcgrath		Ada, Idaho	Ohio	Farmer	Head
1940	Thomas A. Mcgrath	51	Los-Angeles-County, California	Illinois	Fireman	Head
1940	Thomas P. Mcgrath	72	St.-Louis-City-County, Missouri	Missouri	—	Head
1930	Thomas J Mcgrath		Northampton, Pennsylvania	Pennsylvania	Laborer	Head
1910	Thomas Mcgrath		Essex, New Jersey	New Jersey	Laborer	Son
1930	Thomas F. Mcgrath		Newport, Rhode Island	Rhode Island	—	Son
1920	Thomas Mcgrath		Kings, New York	New York	Clerk	Son
1930	Thomas E. Jr. Mcgrath		Essex, Massachusetts	Maine	Helper	Son

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About Thomas Mcgrath US Census Records & Model Tree

We've indexed 4525 free, proprietary US Census records for Thomas Mcgrath across 1900–1950, covering 49 states and DC: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, 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 Thomas 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 4525 US Census records for Thomas Mcgrath, from 1900 to 1950, across 49 states and DC.
: You'll see Thomas'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 Thomas Mcgrath'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 Thomas Mcgrath 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 Thomas Mcgrath records from the 1900 through 1950 US Federal Census, across 49 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.

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