How many Thomas Mcnamara census records do you have?

We have 2992 US Census records for Thomas Mcnamara, from 1900 to 1950, across 46 states and DC.

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

Yes. All Thomas Mcnamara 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 Mcnamara?

We have Thomas Mcnamara records from the 1900 through 1950 US Federal Census, across 46 states and DC. Use the year and state filters to narrow your results.

How do I find Thomas Mcnamara 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 Mcnamara?

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 Mcnamara — US Census Records & Model Tree

We found 2992 free census records for Thomas Mcnamara across 6 census years (1900–1950), in 46 states and DC and 397 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Thomas Mcnamara Census Records by State & County

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Showing of 2992 records for Thomas Mcnamara US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Thomas Mcnamara		Queens, New York	New York	—	Son
1940	Thomas Mcnamara	49	Queens-County, New York	Ireland	Patrolman	Head
1940	Thomas Mcnamara	25	Monroe-County, New York	New York	Tax Assessor	Son
1930	Thomas J. Mcnamara		Suffolk, Massachusetts	Massachusetts	—	Son
1940	Thomas Mcnamara	25	Macon-County, Illinois	Illinois	Lineman'S Helper	Son
1930	Thomas Jr Mcnamara		Mercer, New Jersey	New Jersey	—	Son
1940	Thomas H Mcnamara	27	Yakima-County, Washington	Washington	Operator	Head
1940	Thomas Mcnamara	20	New-York-County, New York	New York	Billing Clerk	Son
1930	Thomas Mcnamara		New York, New York	New York	Chauffeur	Son
1930	Thomas Mcnamara		Converse, Wyoming	Colorado	Cattle	Head
1940	Thomas Mcnamara	52	Yakima-County, Washington	Colorado	Laborer	Head
1910	Thomas Mcnamara		New York, New York	Ireland	Laborer	Head
1940	Thomas Mcnamara	75	Hamilton-County, Ohio	Ohio	—	Head
1940	Thomas Mcnamara	42	Kings-County, New York	New York	Patrolman	Head
1940	Thomas Mcnamara	46	New-York-County, New York	Ireland	Attendant	Head
1920	Thomas Mcnamara		Norfolk, Massachusetts	Massachusetts	Bleacher	Head
1940	Thomas Mcnamara	11	Erie-County, New York	New York	—	Son
1940	Thomas F. Mcnamara	17	Cook-County, Illinois	Illinois	—	Son
1930	Thomas Q Mcnamara		Bergen, New Jersey	New Jersey	Salesman	Son
1940	Thomas Mcnamara	21	Philadelphia-County, Pennsylvania	Pennsylvania	Machinist	Son
1940	Thomas Mcnamara	59	St.-Croix-County, Wisconsin	Wisconsin	Farmer	Head
1920	Thomas Mcnamara		Goodhue, Minnesota	Minnesota	Mail Carrier	Son
1940	Thomas Mcnamara	12	Hamilton-County, Ohio	Ohio	—	Son
1940	Thomas Mcnamara	66	Worcester-County, Massachusetts	Irish Free State	—	Head
1920	Thomas Mcnamara		None, None	No Dakota	Farm Laborer	Son
1930	Thomas Mcnamara		Westchester, New York	Massachusetts	Machinist	Head
1930	Thomas Mcnamara		New York, New York	Ireland	Manager	Head
1930	Thomas Mcnamara		Cook, Illinois	Illinois	Postal Clerk	Head
1910	Thomas P. Mcnamara		Worcester, Massachusetts	England	Wire Drawer	Head
1940	Thomas Mcnamara	14	Hampden-County, Massachusetts	Massachusetts	—	Son

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About Thomas Mcnamara US Census Records & Model Tree

We've indexed 2992 free, proprietary US Census records for Thomas Mcnamara across 1900–1950, covering 46 states and DC: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Hawaii, 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, 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 2992 US Census records for Thomas Mcnamara, from 1900 to 1950, across 46 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 Mcnamara'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 Mcnamara 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 Mcnamara records from the 1900 through 1950 US Federal Census, across 46 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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