How many Mary Devine census records do you have?

We have 3050 US Census records for Mary Devine, from 1900 to 1950, across 48 states and DC.

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

Yes. All Mary Devine 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 Devine?

We have Mary Devine 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 Devine 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 Devine?

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 Devine — US Census Records & Model Tree

We found 3050 free census records for Mary Devine across 6 census years (1900–1950), in 48 states and DC and 465 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Devine Census Records by State & County

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Showing of 3050 records for Mary Devine US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary Devine	25	Richland-County, Wisconsin	Wisconsin	—	Daughter
1940	Mary F Devine	32	Franklin-County, Ohio	OHIO	Stenographer	Daughter
1900	Mary Devine	40	Suffolk, Massachusetts	Ireland	—	Wife
1930	Mary Devine		Queens, New York	New York	—	Wife
1920	Mary Devine		New York, New York	Scotland	—	Head
1910	Mary A Devine		Providence, Rhode Island	Rhode Island	Sewer	Daughter
1940	Mary Devine	20	Marion-County, Indiana	Indiana	Waitress	Daughter
1940	Mary Devine	48	Ramsey-County, Minnesota	Minnesota	—	Wife
1930	Mary T. Devine		Suffolk, Massachusetts	Massachusetts	None	Daughter
1930	Mary A Devine		Erie, New York	New York	Saleslady	Daughter
1930	Mary R. Devine		Montgomery, Pennsylvania	Pennsylvania	None	Daughter
1940	Mary H. Devine	18	Allegheny-County, Pennsylvania	Pennsylvania	House Worker	Daughter
1920	Mary J. Devine		Cumberland, Maine	Maine	Operator	Daughter
1940	Mary Jane Devine	20	Kossuth-County, Iowa	Iowa	—	Daughter
1940	Mary J Devine	17	Middlesex-County, Massachusetts	Massachusetts	—	Daughter
1940	Mary V. Devine	19	Hampden-County, Massachusetts	Massachusetts	Typist-Clerk	Daughter
1940	Mary Devine	11	Suffolk-County, Massachusetts	Massachusetts	—	Daughter
1910	Mary Devine		Monongalia, West Virginia	West Virginia	—	Daughter
1940	Mary Tally Devine	14	Lincoln-County, North Carolina	North Carolina	—	Daughter
1940	Mary K. Devine	16	Kankakee-County, Illinois	Illinois	—	Daughter
1940	Mary G. Devine	14	Suffolk-County, Massachusetts	Massachusetts	—	Daughter
1940	Mary F. Devine	45	Middlesex-County, Massachusetts	Massachusetts	—	Wife
1940	Mary Devine	41	Cook-County, Illinois	Northern Ireland	—	Wife
1940	Mary Devine	30	Henry-County, Kentucky	Kentucky	—	Wife
1940	Mary Devine	11	New-York-County, New York	New York	—	Daughter
1940	Mary C. Devine	22	Middlesex-County, Massachusetts	Massachusetts	Secretary	Daughter
1940	Mary Devine	31	Kings-County, New York	New York	Stenographer	Daughter
1900	Mary Devine	35	Plymouth, Massachusetts	Ireland	—	Wife
1910	Mary Devine		Montgomery, Pennsylvania	Ireland	None	Wife
1940	Mary Devine	60	Suffolk-County, Massachusetts	Irish Free State	—	Wife

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About Mary Devine US Census Records & Model Tree

We've indexed 3050 free, proprietary US Census records for Mary Devine 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 3050 US Census records for Mary Devine, 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 Devine'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 Devine 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 Devine 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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