How many Mary Maher census records do you have?

We have 4445 US Census records for Mary Maher, from 1900 to 1950, across 48 states and DC.

What's in a Mary Maher 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 Maher'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 Maher census records free?

Yes. All Mary Maher 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 Maher?

We have Mary Maher records from the 1900 through 1950 US Federal Census, across 48 states and DC. Use the year and state filters to narrow your results.

How do I find Mary Maher 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 Maher?

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 Maher — US Census Records & Model Tree

We found 4445 free census records for Mary Maher across 6 census years (1900–1950), in 48 states and DC and 514 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Maher Census Records by State & County

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Showing of 4445 records for Mary Maher US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	Mary E Maher		Hillsborough, New Hampshire	New Hampshire	—	Daughter
1940	Mary X. Maher	63	Delaware-County, Pennsylvania	Ireland	—	Head
1940	Mary Maher	56	New-York-County, New York	Ireland	—	Wife
1920	Mary Maher		Will, Illinois	Illinois	Keeper	Wife
1920	Mary Maher		New York, New York	Ireland	—	Wife
1930	Mary Maher		New York, New York	Ireland	None	Wife
1940	Mary Maher	60	Bronx-County, New York	Ireland	—	Head
1940	Mary Maher	74	Kings-County, New York	Ireland	—	Head
1940	Mary Maher	48	Kings-County, New York	Connecticut	Clerk	Head
1940	Mary Catherine Maher	13	Wayne-County, Michigan	Michigan	—	Daughter
1930	Mary Maher		Albany, New York	New York	—	Daughter
1940	Mary Maher	15	Kings-County, New York	New York	—	Daughter
1940	Mary Maher	43	Hudson-County, New Jersey	Irish Free State	—	Wife
1940	Mary Maher	28	Bronx-County, New York	New York	Typist	Daughter
1920	Mary D Maher		Walla Walla, Washington	Washington	—	Daughter
1940	Mary Maher	39	Brown-County, Ohio	Ohio	—	Wife
1930	Mary T Maher		New York, New York	Irish Free State	Housekeeper	Wife
1940	Mary Maher	13	Dakota-County, Minnesota	Minnesota	—	Daughter
1940	Mary Maher	17	Dallas-County, Texas	Texas	—	Daughter
1940	Mary Maher	19	Kings-County, New York	New York	Machine Operator	Daughter
1940	Mary Maher	18	Monmouth-County, New Jersey	New Jersey	—	Daughter
1930	Mary J Maher		Schuylkill, Pennsylvania	Pennsylvania	—	Daughter
1910	Mary R Maher		Carroll, Iowa	Ireland	—	Daughter
1920	Mary Maher		Hudson, New Jersey	New Jersey	—	Daughter
1910	Mary Maher		Kings, New York	New York	—	Wife
1930	Mary J. Maher		Hudson, New Jersey	New Jersey	—	Daughter
1940	Mary Maher	19	Ramsey-County, Minnesota	Minnesota	Typist	Daughter
1930	Mary A. Maher		Greeley, Nebraska	Illinois	—	Wife
1940	Mary E. Maher	39	Essex-County, New Jersey	New Jersey	—	Wife
1940	Mary Maher	24	Queens-County, New York	New York	Secretary	Daughter

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About Mary Maher US Census Records & Model Tree

We've indexed 4445 free, proprietary US Census records for Mary Maher across 1900–1950, covering 48 states and DC: Alabama, 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 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 4445 US Census records for Mary Maher, from 1900 to 1950, across 48 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 Maher'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 Maher 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 Maher records from the 1900 through 1950 US Federal Census, across 48 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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