How many Margaret Mcnamara census records do you have?

We have 2898 US Census records for Margaret Mcnamara, from 1900 to 1950, across 43 states and DC.

What's in a Margaret Mcnamara census record?

You'll see Margaret'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 Margaret 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 Margaret Mcnamara census records free?

Yes. All Margaret 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 Margaret Mcnamara?

We have Margaret Mcnamara records from the 1900 through 1950 US Federal Census, across 43 states and DC. Use the year and state filters to narrow your results.

How do I find Margaret 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 Margaret 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.

Margaret Mcnamara — US Census Records & Model Tree

We found 2898 free census records for Margaret Mcnamara across 6 census years (1900–1950), in 43 states and DC and 382 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Margaret Mcnamara Census Records by State & County

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Showing of 2898 records for Margaret Mcnamara US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Margaret Mcnamara		Mountrail, North Dakota	North Dakota	Teacher	Daughter
1940	Margaret Mcnamara	29	Albany-County, New York	New York	Inspector	Daughter
1940	Margaret Mcnamara	27	Buchanan-County, Iowa	Iowa	—	Wife
1940	Margaret Mcnamara	20	Queens-County, New York	New York	Stenographer	Daughter
1920	Margaret Mcnamara		New York, New York	Ireland	—	Wife
1940	Margaret Mcnamara	57	Will-County, Illinois	Illinois	—	Head
1940	Margaret Mcnamara	42	St.-Louis-City-County, Missouri	Missouri	—	Wife
1910	Margaret Mcnamara		New York, New York	Ireland	—	Wife
1920	Margaret Mcnamara		New Haven, Connecticut	Ireland	Matron	Head
1920	Margaret Mcnamara		Middlesex, Massachusetts	Ireland	—	Wife
1920	Margaret Mcnamara		Westchester, New York	New York	None	Head
1930	Margaret Mcnamara		Cook, Illinois	Illinois	—	Daughter
1930	Margaret Mcnamara		Will, Illinois	Illinois	Operator	Daughter
1940	Margaret D. Mcnamara	39	Kings-County, New York	Irish Free State	—	Wife
1940	Margaret Mcnamara	15	St.-Croix-County, Wisconsin	Wisconsin	—	Daughter
1940	Margaret Mcnamara	43	Erie-County, New York	Nebraska	—	Wife
1940	Margaret Mcnamara	44	Middlesex-County, Massachusetts	Massachusetts	—	Wife
1920	Margaret Mcnamara		Cherokee, Kansas	England	—	Wife
1930	Margaret Mcnamara		New York, New York	New York	—	Daughter
1920	Margaret Mcnamara		Cook, Illinois	Illinois	—	Daughter
1930	Margaret Mcnamara		Wayne, Michigan	Michigan	None	Wife
1930	Margaret E Mcnamara		Susquehanna, Pennsylvania	Pennsylvania	—	Daughter
1920	Margaret A. Mcnamara		Luzerne, Pennsylvania	Pennsylvania	Operator	Daughter
1930	Margaret Mcnamara		Suffolk, Massachusetts	Irish Free State	—	Head
1940	Margaret Mcnamara	20	Nassau-County, New York	Scotland	Kitchen Maid	Daughter
1940	Margaret Mcnamara	22	Nassau-County, New York	New York	Sales Lady	Daughter
1940	Margaret Mcnamara	40	Montgomery-County, Pennsylvania	Pennsylvania	0	Wife
1930	Margaret Mcnamara		Cook, Illinois	Illinois	—	Head
1940	Margaret Mcnamara	14	Montgomery-County, Pennsylvania	Pennsylvania	—	Daughter
1920	Margaret Mcnamara		Cook, Illinois	Illinois	Teacher	Daughter

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About Margaret Mcnamara US Census Records & Model Tree

We've indexed 2898 free, proprietary US Census records for Margaret Mcnamara across 1900–1950, covering 43 states and DC: Alabama, Arizona, 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, New Hampshire, New Jersey, New York, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin.

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 Margaret 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 2898 US Census records for Margaret Mcnamara, from 1900 to 1950, across 43 states and DC.
: You'll see Margaret'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 Margaret 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 Margaret 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 Margaret Mcnamara records from the 1900 through 1950 US Federal Census, across 43 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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