How many Mary Flynn census records do you have?

We have 13472 US Census records for Mary Flynn, from 1900 to 1950, across 50 states and DC.

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

Yes. All Mary Flynn 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 Flynn?

We have Mary Flynn records from the 1900 through 1950 US Federal Census, across 50 states and DC. Use the year and state filters to narrow your results.

How do I find Mary Flynn 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 Flynn?

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 Flynn — US Census Records & Model Tree

We found 13472 free census records for Mary Flynn across 6 census years (1900–1950), in 50 states and DC and 973 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Flynn Census Records by State & County

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Showing of 13472 records for Mary Flynn US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary Flynn	23	Luzerne-County, Pennsylvania	Pennsylvania	Finisher	Daughter
1940	Mary Flynn	22	Dakota-County, Minnesota	Minnesota	Clerk	Daughter
1940	Mary M. Flynn	25	Cumberland-County, Tennessee	Tennessee	—	Wife
1940	Mary Flynn	43	Pulaski-County, Virginia	Virginia	Laundress	Head
1940	Mary Flynn	25	Lackawanna-County, Pennsylvania	Pennsylvania	Sales Lady	Daughter
1920	Mary Flynn		New York, New York	Connecticut	Bookkeeper	Daughter
1940	Mary Flynn	60	Campbell-County, Kentucky	Ohio	—	Wife
1940	Mary J. Flynn	47	Essex-County, Massachusetts	Ireland	—	Wife
1940	Mary Flynn	48	Kings-County, New York	Ireland	—	Wife
1940	Mary E. Flynn	46	Lackawanna-County, Pennsylvania	Pennsylvania	—	Wife
1940	Mary E. Flynn	69	Berkshire-County, Massachusetts	Ireland	—	Wife
1920	Mary Flynn		Plymouth, Massachusetts	Massachusetts	—	Wife
1940	Mary Flynn	51	Hampden-County, Massachusetts	Vermont	—	Wife
1940	Mary Flynn	62	Estill-County, Kentucky	Kentucky	—	Wife
1940	Mary Flynn	86	Middlesex-County, Massachusetts	Ireland	—	Head
1920	Mary Flynn		Atchison, Kansas	Missouri	—	Wife
1930	Mary Flynn		Suffolk, Massachusetts	Ireland	Laundress	Head
1940	Mary B. Flynn	53	Los-Angeles-County, California	Colorado	—	Wife
1940	Mary A Flynn	66	Essex-County, New Jersey	Ireland	—	Wife
1940	Mary J Flynn	52	Suffolk-County, Massachusetts	Sweden	Saleswoman	Head
1920	Mary F Flynn		Essex, Massachusetts	Massachusetts	—	Head
1940	Mary Flynn	61	New-York-County, New York	Ireland	Maintenance	Head
1940	Mary Flynn	17	Providence-County, Rhode Island	Rhode Island	—	Daughter
1910	Mary Flynn		Cook, Illinois	Illinois	Stenographer	Daughter
1910	Mary A Flynn		Middlesex, Massachusetts	England	—	Wife
1940	Mary Flynn	18	Mercer-County, New Jersey	New Jersey	—	Daughter
1930	Mary Flynn		Allegheny, Pennsylvania	Pennsylvania	—	Daughter
1930	Mary H. Flynn		Providence, Rhode Island	Rhode Island	—	Wife
1910	Mary Flynn		Susquehanna, Pennsylvania	Pennsylvania	—	Daughter
1910	Mary E. Flynn		Fulton, Georgia	Ohio	—	Wife

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About Mary Flynn US Census Records & Model Tree

We've indexed 13472 free, proprietary US Census records for Mary Flynn across 1900–1950, covering 50 states and DC: Alabama, Alaska, 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 13472 US Census records for Mary Flynn, from 1900 to 1950, across 50 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 Flynn'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 Flynn 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 Flynn records from the 1900 through 1950 US Federal Census, across 50 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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