How many Thomas Mccarthy census records do you have?

We have 5480 US Census records for Thomas Mccarthy, from 1900 to 1950, across 49 states and DC.

What's in a Thomas Mccarthy 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 Mccarthy'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 Mccarthy census records free?

Yes. All Thomas Mccarthy 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 Mccarthy?

We have Thomas Mccarthy 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 Mccarthy 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 Mccarthy?

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 Mccarthy — US Census Records & Model Tree

We found 5480 free census records for Thomas Mccarthy across 6 census years (1900–1950), in 49 states and DC and 531 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Thomas Mccarthy Census Records by State & County

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Showing of 5480 records for Thomas Mccarthy US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Thomas Mccarthy	40	Philadelphia-County, Pennsylvania	Pennsylvania	Teller	Head
1940	Thomas Mccarthy	43	Kings-County, New York	New York	Longshoreman	Head
1930	Thomas J Mccarthy		Suffolk, Massachusetts	New York	Printer	Head
1920	Thomas Mccarthy		Brookings, South Dakota	South Dakota	Laborer	Son
1940	Thomas E. Mccarthy	25	Hamilton-County, Ohio	Ohio	Truck Driver	Son
1930	Thomas Mccarthy		New York, New York	New York	—	Son
1940	Thomas Mccarthy	26	Kings-County, New York	New York	—	Son
1930	Thomas Mccarthy		Cook, Illinois	Illinois	Draftsman	Son
1940	Thomas Mccarthy	34	Broome-County, New York	New York	Barber	Head
1920	Thomas Mccarthy		Middlesex, Massachusetts	Massachusetts	Lawyer	Son
1940	Thomas Mccarthy	22	Allegheny-County, Pennsylvania	Pennsylvania	Laborer	Son
1940	Thomas J. Mccarthy	23	Lackawanna-County, Pennsylvania	Pennsylvania	Roofer	Son
1940	Thomas Mccarthy	33	Leavenworth-County, Kansas	Kansas	Assistant Postmaster	Head
1910	Thomas H. Mccarthy		Essex, Massachusetts	Massachusetts	—	Son
1940	Thomas F. Mccarthy	29	Androscoggin-County, Maine	Maine	Student	Son
1930	Thomas Mccarthy		Kings, New York	New York	Unemployed	Son
1940	Thomas Mccarthy	26	Suffolk-County, Massachusetts	Massachusetts	Lithograph	Son
1940	Thomas Mccarthy	37	Hudson-County, New Jersey	New Jersey	New Worker	Son
1940	Thomas Mccarthy	68	Essex-County, Massachusetts	Massachusetts	Receiver	Head
1910	Thomas Mccarthy		New York, New York	Ireland	Laborer	Head
1930	Thomas F. Mccarthy		Providence, Rhode Island	Rhode Island	Plumber	Head
1920	Thomas Mccarthy		Kings, New York	New York	Foreman	Head
1920	Thomas Mccarthy		Cook, Illinois	Ireland	Meat Inspector	Head
1940	Thomas L. Mccarthy	56	Androscoggin-County, Maine	Maine	Salesman	Head
1940	Thomas Mccarthy	68	Queens-County, New York	Ireland	Classified Collector	Head
1920	Thomas Mccarthy		New York, New York	New York	Section Keeper	Head
1940	Thomas E. Mccarthy	68	Essex-County, Massachusetts	Ireland	—	Head
1920	Thomas H. Mccarthy		Worcester, Massachusetts	Connecticut	Meat Cutter	Head
1940	Thomas Mccarthy	14	Rutland-County, Vermont	Vermont	—	Son
1930	Thomas Mccarthy		Middlesex, Massachusetts	Massachusetts	Clerk	Son

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About Thomas Mccarthy US Census Records & Model Tree

We've indexed 5480 free, proprietary US Census records for Thomas Mccarthy across 1900–1950, covering 49 states and DC: Alabama, 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 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 5480 US Census records for Thomas Mccarthy, 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 Mccarthy'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 Mccarthy 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 Mccarthy 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.

Other Mccarthy US Census Records

Anna Mccarthy Catherine Mccarthy Charles Mccarthy Daniel Mccarthy Edward Mccarthy Elizabeth Mccarthy Helen Mccarthy James Mccarthy John Mccarthy Joseph Mccarthy Margaret Mccarthy Mary Mccarthy Robert Mccarthy William Mccarthy

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