How many Mary Carey census records do you have?

We have 6063 US Census records for Mary Carey, from 1900 to 1950, across 50 states and DC.

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

Yes. All Mary Carey 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 Carey?

We have Mary Carey 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 Carey 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 Carey?

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 Carey — US Census Records & Model Tree

We found 6063 free census records for Mary Carey across 6 census years (1900–1950), in 50 states and DC and 890 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

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Showing of 6063 records for Mary Carey US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Mary C Carey		New York, New York	New York	Stenographer	Daughter
1940	Mary C. Carey	21	Baltimore-City-County, Maryland	Maryland	—	Daughter
1940	Mary Carey	49	Bronx-County, New York	Ireland	—	Wife
1900	Mary Carey	53	Luzerne, Pennsylvania	Wales	—	Head
1940	Mary Carey	57	Kings-County, New York	Ireland	0	Wife
1940	Mary Carey	56	Cook-County, Illinois	Ireland	—	Head
1920	Mary J. Carey		Sussex, Delaware	Delaware	None	Wife
1940	Mary A Carey	17	Garrett-County, Maryland	Maryland	—	Daughter
1930	Mary Carey		Richmond, Virginia	Virginia	—	Daughter
1910	Mary Carey		Hillsborough, New Hampshire	New Hampshire	Spinner	Daughter
1930	Mary H. Carey		Vermilion, Illinois	Illinois	—	Daughter
1940	Mary Carey	38	Athens-County, Ohio	Ohio	0	Wife
1900	Mary E. Carey	8	Sussex, Delaware	Delaware	At School	Daughter
1940	Mary Anne Carey	18	Milwaukee-County, Wisconsin	Illinois	—	Daughter
1910	Mary Carey		Hudson, New Jersey	Ireland	—	Wife
1900	Mary M Carey	47	Will, Illinois	Michigan	—	Wife
1940	Mary J Carey	47	Suffolk-County, Massachusetts	Irish Free State	House Worker	Wife
1910	Mary Carey		Erie, New York	Ireland	—	Head
1940	Mary Carey	31	Boone-County, Missouri	Missouri	—	Wife
1910	Mary Carey		New York, New York	Ireland	—	Head
1920	Mary Carey		Washington, Colorado	Iowa	Servant	Daughter
1940	Mary E. Carey	54	Winnebago-County, Wisconsin	Wisconsin	—	Wife
1940	Mary Carey	20	Richmond-County, Virginia	Virginia	Maid	Daughter
1930	Mary Carey		Middlesex, Massachusetts	Massachusetts	—	Daughter
1930	Mary F. Carey		Alameda, California	California	—	Daughter
1940	Mary Carey	25	Cook-County, Illinois	Illinois	—	Daughter
1910	Mary E Carey		Providence, Rhode Island	Rhode Island	—	Daughter
1930	Mary Carey		Suffolk, Massachusetts	Massachusetts	—	Daughter
1940	Mary Carey	83	Madison-County, Montana	Nebraska	Farmer	Head
1940	Mary E. Carey	17	King-County, Washington	Washington	—	Daughter

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About Mary Carey US Census Records & Model Tree

We've indexed 6063 free, proprietary US Census records for Mary Carey 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 6063 US Census records for Mary Carey, 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 Carey'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 Carey 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 Carey 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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