How many Margaret Mahoney census records do you have?

We have 3960 US Census records for Margaret Mahoney, from 1900 to 1950, across 49 states and DC.

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

Yes. All Margaret Mahoney 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 Mahoney?

We have Margaret Mahoney 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 Margaret Mahoney 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 Mahoney?

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 Mahoney — US Census Records & Model Tree

We found 3960 free census records for Margaret Mahoney across 6 census years (1900–1950), in 49 states and DC and 406 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Margaret Mahoney Census Records by State & County

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Showing of 3960 records for Margaret Mahoney US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Margaret E. Mahoney		Suffolk, Massachusetts	Massachusetts	—	Daughter
1940	Margaret M. Mahoney	30	Cuyahoga-County, Ohio	Ohio	—	Daughter
1940	Margaret Mahoney	35	Suffolk-County, Massachusetts	Massachusetts	File Clerk	Daughter
1940	Margaret L Mahoney	38	Stevens-County, Minnesota	Minnesota	Teacher	Daughter
1940	Margaret Mahoney	25	Worcester-County, Massachusetts	Massachusetts	—	Daughter
1930	Margaret M. Mahoney		Norfolk, Massachusetts	Massachusetts	Co-Helper	Daughter
1940	Margaret M Mahoney	44	Middlesex-County, Massachusetts	Massachusetts	Designer	Daughter
1930	Margaret Mahoney		Wayne, Michigan	Michigan	—	Daughter
1940	Margaret Mahoney	23	New-York-County, New York	New York	Typist	Daughter
1940	Margaret Mahoney	24	Suffolk-County, Massachusetts	Massachusetts	Typist	Daughter
1940	Margaret Mahoney	24	Cook-County, Illinois	Illinois	Typist	Daughter
1920	Margaret J Mahoney		Essex, Massachusetts	Massachusetts	—	Daughter
1940	Margaret E. Mahoney	28	Suffolk-County, Massachusetts	Massachusetts	Stenographer	Daughter
1940	Margaret Mahoney	25	Jefferson-County, Kentucky	Kentucky	Assembler	Daughter
1930	Margaret Mahoney		Essex, New Jersey	New Jersey	—	Wife
1930	Margaret M. Mahoney		Will, Illinois	Illinois	None	Daughter
1940	Margaret Mahoney	52	Worcester-County, Massachusetts	Massachusetts	—	Wife
1940	Margaret Mahoney	32	Suffolk-County, Massachusetts	Massachusetts	—	Wife
1940	Margaret E Mahoney	50	Middlesex-County, Massachusetts	Massachusetts	—	Wife
1930	Margaret Mahoney		New York, New York	Ireland	—	Wife
1940	Margaret Mahoney	43	Cook-County, Illinois	Illinois	0	Wife
1940	Margaret E. Mahoney	45	Kings-County, New York	New York	—	Wife
1920	Margaret Mahoney		Plymouth, Massachusetts	Ireland	—	Wife
1940	Margaret Mahoney	63	Napa-County, California	California	—	Wife
1940	Margaret Mahoney	42	New-York-County, New York	New York	—	Wife
1930	Margaret M. Mahoney		Middlesex, Massachusetts	Massachusetts	—	Head
1940	Margaret D. Mahoney	55	Fulton-County, Georgia	Rhode Island	—	Head
1940	Margaret Mahoney	51	Lake-County, Montana	Colorado	—	Head
1930	Margaret A Mahoney		Essex, Massachusetts	New York	None	Head
1940	Margaret Mahoney	66	Schenectady-County, New York	New York	None	Head

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About Margaret Mahoney US Census Records & Model Tree

We've indexed 3960 free, proprietary US Census records for Margaret Mahoney 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 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 3960 US Census records for Margaret Mahoney, from 1900 to 1950, across 49 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 Mahoney'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 Mahoney 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 Mahoney 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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