How many Mary Flanagan census records do you have?

We have 4496 US Census records for Mary Flanagan, from 1900 to 1950, across 48 states and DC.

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

Yes. All Mary Flanagan 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 Flanagan?

We have Mary Flanagan 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 Flanagan 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 Flanagan?

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 Flanagan — US Census Records & Model Tree

We found 4496 free census records for Mary Flanagan across 6 census years (1900–1950), in 48 states and DC and 632 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Flanagan Census Records by State & County

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Showing of 4496 records for Mary Flanagan US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	Mary Flanagan		Essex, Massachusetts	Massachusetts	Assistant	Daughter
1920	Mary G. Flanagan		Bristol, Massachusetts	Massachusetts	—	Daughter
1930	Mary J Flanagan		Suffolk, Massachusetts	Massachusetts	Clerk Record	Daughter
1940	Mary Flanagan	70	Essex-County, Massachusetts	Massachusetts	—	Wife
1940	Mary Flanagan	22	Bronx-County, New York	New York	—	Wife
1930	Mary E Flanagan		Montgomery, Ohio	Ohio	—	Daughter
1940	Mary E. Flanagan	67	Kent-County, Rhode Island	Rhode Island	—	Wife
1940	Mary Flanagan	51	Polk-County, Iowa	Wyoming	—	Wife
1940	Mary J. Flanagan	75	Ramsey-County, Minnesota	Minnesota	—	Head
1940	Mary Flanagan	68	Delaware-County, Pennsylvania	Ireland	—	Wife
1900	Mary Flanagan	28	Orleans, Louisiana	Ireland	—	Wife
1920	Mary Flanagan		Hudson, New Jersey	Ireland	—	Head
1940	Mary C. Flanagan	55	Wyandotte-County, Kansas	Kentucky	—	Head
1940	Mary Flanagan	42	Kings-County, New York	New York	—	Wife
1930	Mary E. Flanagan		Allegheny, Pennsylvania	England	—	Wife
1940	Mary Flanagan	74	Cook-County, Illinois	Ireland	—	Head
1940	Mary E. Flanagan	28	Essex-County, New Jersey	New Jersey	—	Daughter
1940	Mary Flanagan	20	St.-Louis-County, Missouri	Missouri	—	Daughter
1930	Mary Flanagan		Duplin, North Carolina	North Carolina	Farmer	Head
1930	Mary A Flanagan		Cook, Illinois	Illinois	—	Daughter
1920	Mary Flanagan		Iowa, Iowa	Iowa	—	Daughter
1940	Mary Flanagan	45	Fairfield-County, Connecticut	Irish Free State	Seamstress	Wife
1920	Mary Lou Flanagan		Clarke, Georgia	Georgia	—	Daughter
1930	Mary M Flanagan		Cambria, Pennsylvania	Pennsylvania	—	Daughter
1910	Mary E Flanagan		Tehama, California	California	Teacher	Daughter
1940	Mary Lou Flanagan	29	Orange-County, Texas	Mississippi	—	Wife
1910	Mary Flanagan		New Haven, Connecticut	Ireland	Housekeeper	Head
1920	Mary Flanagan		Worcester, Massachusetts	Massachusetts	—	Daughter
1910	Mary A Flanagan		Tehama, California	Ireland	—	Wife
1930	Mary A. Flanagan		Windham, Connecticut	Massachusetts	Winder	Daughter

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About Mary Flanagan US Census Records & Model Tree

We've indexed 4496 free, proprietary US Census records for Mary Flanagan 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 4496 US Census records for Mary Flanagan, 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 Flanagan'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 Flanagan 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 Flanagan 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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