How many Mary Mcnamara census records do you have?

We have 6811 US Census records for Mary Mcnamara, from 1900 to 1950, across 49 states and DC.

What's in a Mary Mcnamara census record?

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

Yes. All Mary 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 Mary Mcnamara?

We have Mary Mcnamara 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 Mary 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 Mary 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.

Mary Mcnamara — US Census Records & Model Tree

We found 6811 free census records for Mary Mcnamara across 6 census years (1900–1950), in 49 states and DC and 621 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Mcnamara Census Records by State & County

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Showing of 6811 records for Mary Mcnamara US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary B. Mcnamara	32	Washoe-County, Nevada	Nevada	Stenographer	Daughter
1940	Mary Mcnamara	60	Queens-County, New York	Ireland	—	Wife
1930	Mary Mcnamara		Essex, New Jersey	Ireland	—	Head
1920	Mary Mcnamara		New York, New York	Ireland	—	Wife
1940	Mary Mcnamara	75	New-York-County, New York	Ireland	—	Wife
1920	Mary Mcnamara		Cook, Illinois	Ireland	Laborer	Head
1930	Mary Mcnamara		Grafton, New Hampshire	New Hampshire	—	Wife
1930	Mary A. Mcnamara		Windham, Vermont	Massachusetts	None	Wife
1940	Mary Mcnamara	60	Dakota-County, Minnesota	Minnesota	House Keeper	Wife
1940	Mary G. Mcnamara	61	Washoe-County, Nevada	California	Teacher	Head
1920	Mary A. Mcnamara		Suffolk, Massachusetts	Ireland	None	Head
1930	Mary Mcnamara		New York, New York	Ireland	None	Head
1940	Mary Mcnamara	74	Queens-County, New York	Ireland	—	Head
1920	Mary Mcnamara		New York, New York	Ireland	—	Head
1910	Mary Mcnamara		New York, New York	Ireland	—	Wife
1930	Mary E Mcnamara		Suffolk, Massachusetts	Massachusetts	Clerk	Wife
1940	Mary Mcnamara	12	Cook-County, Illinois	Illinois	—	Daughter
1940	Mary L. Mcnamara	15	Middlesex-County, Massachusetts	Massachusetts	—	Daughter
1930	Mary Mcnamara		Middlesex, Massachusetts	Massachusetts	—	Daughter
1930	Mary Mcnamara		New York, New York	Ireland	—	Wife
1920	Mary Mcnamara		Kings, New York	New York	None	Daughter
1940	Mary Mcnamara	12	Worcester-County, Massachusetts	Massachusetts	—	Daughter
1930	Mary Mcnamara		Clallam, Washington	Washington	—	Daughter
1940	Mary Mcnamara	35	Linn-County, Iowa	Iowa	—	Wife
1920	Mary A Mcnamara		Monroe, New York	New York	—	Daughter
1940	Mary Mcnamara	12	Hampden-County, Massachusetts	Massachusetts	—	Daughter
1940	Mary E Mcnamara	13	Livingston-County, Michigan	Michigan	—	Daughter
1940	Mary S. Mcnamara	17	Hennepin-County, Minnesota	Minnesota	—	Daughter
1910	Mary Mcnamara		Ramsey, Minnesota	Ireland	Washerwoman	Wife
1920	Mary Mcnamara		Hudson, New Jersey	Ireland	—	Wife

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About Mary Mcnamara US Census Records & Model Tree

We've indexed 6811 free, proprietary US Census records for Mary Mcnamara 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 Mary 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 6811 US Census records for Mary Mcnamara, from 1900 to 1950, across 49 states and DC.
: You'll see Mary'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 Mary 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 Mary 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 Mary Mcnamara 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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