How many Mary Sheehan census records do you have?

We have 6100 US Census records for Mary Sheehan, from 1900 to 1950, across 48 states and DC.

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

Yes. All Mary Sheehan 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 Sheehan?

We have Mary Sheehan 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 Sheehan 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 Sheehan?

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 Sheehan — US Census Records & Model Tree

We found 6100 free census records for Mary Sheehan across 6 census years (1900–1950), in 48 states and DC and 477 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Sheehan Census Records by State & County

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Showing of 6100 records for Mary Sheehan US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Mary Sheehan		Leavenworth, Kansas	Kansas	None	Daughter
1920	Mary Sheehan		Rutland, Vermont	Vermont	None	Daughter
1930	Mary Sheehan		Jackson, Kansas	Illinois	None	Head
1940	Mary Sheehan	52	Cook-County, Illinois	Ireland	—	Wife
1920	Mary Sheehan		Albany, New York	Ireland	—	Wife
1930	Mary Sheehan		New York, New York	Ireland	Housewife	Wife
1940	Mary Sheehan	76	Kings-County, New York	Ireland	—	Head
1940	Mary Sheehan	70	San-Francisco-County, California	Ireland	—	Wife
1940	Mary Sheehan	46	New-York-County, New York	Ireland	—	Wife
1930	Mary Sheehan		Philadelphia, Pennsylvania	Ireland	None	Wife
1940	Mary Sheehan	66	Kings-County, New York	Ireland	—	Wife
1940	Mary Sheehan	57	Bronx-County, New York	Ireland	—	Wife
1920	Mary Sheehan		Suffolk, Massachusetts	Ireland	—	Head
1920	Mary Sheehan		Kings, New York	Ireland	None	Head
1940	Mary Sheehan	13	Kings-County, New York	New York	—	Daughter
1930	Mary Sheehan		Middlesex, Massachusetts	Massachusetts	None	Daughter
1910	Mary Sheehan		Essex, Massachusetts	Ireland	—	Wife
1910	Mary Sheehan		Norfolk, Massachusetts	Ireland	—	Wife
1930	Mary L. Sheehan		Cuyahoga, Ohio	Ohio	—	Daughter
1910	Mary Sheehan		Cook, Illinois	Ireland	—	Head
1940	Mary J. Sheehan	10	Allegheny-County, Pennsylvania	Pennsylvania	—	Daughter
1930	Mary Sheehan		Providence, Rhode Island	Rhode Island	Spinner	Daughter
1940	Mary Sheehan	46	New-York-County, New York	New York	Housewife	Wife
1940	Mary Sheehan	13	Worcester-County, Massachusetts	Massachusetts	—	Daughter
1940	Mary Sheehan	36	Suffolk-County, Massachusetts	Massachusetts	—	Wife
1940	Mary C. Sheehan	55	Queens-County, New York	Ireland	—	Wife
1940	Mary R. Sheehan	15	Windsor-County, Vermont	Vermont	—	Daughter
1910	Mary J Sheehan		Montgomery, Pennsylvania	Pennsylvania	—	Daughter
1940	Mary Jo Sheehan	15	Eastland-County, Texas	Texas	—	Daughter
1930	Mary J Sheehan		Jefferson, Kentucky	Kentucky	—	Daughter

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About Mary Sheehan US Census Records & Model Tree

We've indexed 6100 free, proprietary US Census records for Mary Sheehan 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 6100 US Census records for Mary Sheehan, 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 Sheehan'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 Sheehan 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 Sheehan 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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