How many Margaret Mcgrath census records do you have?

We have 3988 US Census records for Margaret Mcgrath, from 1900 to 1950, across 47 states and DC.

What's in a Margaret Mcgrath 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 Mcgrath'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 Mcgrath census records free?

Yes. All Margaret Mcgrath 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 Mcgrath?

We have Margaret Mcgrath records from the 1900 through 1950 US Federal Census, across 47 states and DC. Use the year and state filters to narrow your results.

How do I find Margaret Mcgrath 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 Mcgrath?

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 Mcgrath — US Census Records & Model Tree

We found 3988 free census records for Margaret Mcgrath across 6 census years (1900–1950), in 47 states and DC and 427 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Margaret Mcgrath Census Records by State & County

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Showing of 3988 records for Margaret Mcgrath US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Margaret Mcgrath	30	Kings-County, New York	New York	Clerk	Daughter
1940	Margaret M. Mcgrath	36	Northampton-County, Pennsylvania	Pennsylvania	Bookkeeper	Daughter
1930	Margaret Mcgrath		Philadelphia, Pennsylvania	Pennsylvania	Stenographer	Daughter
1940	Margaret Mcgrath	22	Hudson-County, New Jersey	New Jersey	Comptometer	Daughter
1940	Margaret Mcgrath	30	Cook-County, Illinois	Illinois	—	Wife
1930	Margaret Mcgrath		Bristol, Massachusetts	Massachusetts	Clerk	Daughter
1930	Margaret Mcgrath		St Louis, Missouri	Iowa	School Teacher	Daughter
1930	Margaret Mcgrath		Philadelphia, Pennsylvania	Pennsylvania	Secretary	Daughter
1940	Margaret Mcgrath	22	Calumet-County, Wisconsin	Wisconsin	Student	Daughter
1940	Margaret Mcgrath	43	Providence-County, Rhode Island	Rhode Island	Primary Teacher	Daughter
1940	Margaret A. Mcgrath	25	Hennepin-County, Minnesota	Minnesota	Stenographer	Daughter
1940	Margaret L. Mcgrath	30	Jefferson-County, Kentucky	Kentucky	Stenographer	Daughter
1940	Margaret M. Mcgrath	48	Dallas-County, Texas	Illinois	Office Clerk	Daughter
1940	Margaret M. Mcgrath	29	Scott-County, Iowa	Iowa	Stenographer	Daughter
1940	Margaret Mcgrath	27	San-Francisco-County, California	California	Stenographer	Daughter
1940	Margaret Mcgrath	61	Essex-County, New Jersey	New Jersey	—	Head
1930	Margaret Mcgrath		Queens, New York	Ireland	Teaching	Head
1940	Margaret Mcgrath	73	Philadelphia-County, Pennsylvania	Ireland	—	Head
1920	Margaret Mcgrath		Shelby, Illinois	Louisiana	None	Wife
1920	Margaret Mcgrath		New York, New York	Ireland	—	Wife
1930	Margaret Mcgrath		Richmond, New York	New York	—	Wife
1940	Margaret Mcgrath	56	Queens-County, New York	Ireland	House Wife	Wife
1900	Margaret Mcgrath	55	New York, New York	Ireland	—	Head
1940	Margaret Mcgrath	60	Bronx-County, New York	New York	—	Wife
1940	Margaret A. Mcgrath	65	Hennepin-County, Minnesota	Minnesota	—	Wife
1920	Margaret Mcgrath		Philadelphia, Pennsylvania	Ireland	—	Head
1940	Margaret Mcgrath	75	Oakland-County, Michigan	Canada	—	Head
1940	Margaret Mcgrath	78	Suffolk-County, Massachusetts	Massachusetts	—	Head
1930	Margaret Mcgrath		Erie, New York	New York	—	Daughter
1940	Margaret J Mcgrath	10	Suffolk-County, Massachusetts	Massachusetts	—	Daughter

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About Margaret Mcgrath US Census Records & Model Tree

We've indexed 3988 free, proprietary US Census records for Margaret Mcgrath across 1900–1950, covering 47 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, 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 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 3988 US Census records for Margaret Mcgrath, from 1900 to 1950, across 47 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 Mcgrath'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 Mcgrath 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 Mcgrath records from the 1900 through 1950 US Federal Census, across 47 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 Mcgrath US Census Records

James Mcgrath John Mcgrath Mary Mcgrath Thomas Mcgrath William Mcgrath

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