How many Mary Carroll census records do you have?

We have 14213 US Census records for Mary Carroll, from 1900 to 1950, across 49 states, DC, and 1 territory.

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

Yes. All Mary Carroll 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 Carroll?

We have Mary Carroll records from the 1900 through 1950 US Federal Census, across 49 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find Mary Carroll 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 Carroll?

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 Carroll — US Census Records & Model Tree

We found 14213 free census records for Mary Carroll across 6 census years (1900–1950), in 49 states, DC, and 1 territory and 1535 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Carroll Census Records by State & County

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Showing of 14213 records for Mary Carroll US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1910	Mary Carroll		Montgomery, Maryland	Maryland	—	Daughter
1930	Mary Carroll		Cook, Illinois	Illinois	—	Daughter
1930	Mary E Carroll		Baltimore, Maryland	Maryland	—	Daughter
1940	Mary Carroll	24	Middlesex-County, Massachusetts	Massachusetts	Domestic	Daughter
1940	Mary Ellen Carroll	21	Barbour-County, Alabama	Alabama	Housekeeper	Daughter
1930	Mary L. Carroll		Horry, South Carolina	South Carolina	—	Daughter
1920	Mary Carroll		Sacramento, California	California	None	Daughter
1920	Mary Carroll		Philadelphia, Pennsylvania	Pennsylvania	Examiner	Daughter
1910	Mary Carroll		Ross, Ohio	Ohio	—	Daughter
1930	Mary E Carroll		Cuyahoga, Ohio	Ohio	Social Worker	Daughter
1940	Mary Carroll	22	Boyle-County, Kentucky	Kentucky	Cook	Daughter
1940	Mary Carroll	23	Suffolk-County, Massachusetts	Massachusetts	Clerk	Daughter
1930	Mary W Carroll		Kent, Maryland	Maryland	Teacher	Daughter
1940	Mary Carroll	41	Caroline-County, Maryland	Maryland	—	Wife
1940	Mary Carroll	61	Bronx-County, New York	Ireland	—	Wife
1940	Mary Carroll	58	Essex-County, Massachusetts	England	—	Wife
1930	Mary Carroll		Hudson, New Jersey	Ireland	—	Head
1940	Mary Carroll	59	Kent-County, Rhode Island	England	—	Wife
1910	Mary D. Carroll		Carter, Kentucky	Kentucky	—	Wife
1940	Mary E Carroll	45	Suffolk-County, Massachusetts	Mass	—	Wife
1920	Mary Carroll		Gwinnett, Georgia	Georgia	—	Wife
1940	Mary Carroll	63	Hudson-County, New Jersey	Ireland	—	Wife
1940	Mary Carroll	76	Cerro-Gordo-County, Iowa	Iowa	—	Head
1910	Mary A. Carroll		Ramsey, Minnesota	Ireland	None	Head
1940	Mary L. Carroll	56	Philadelphia-County, Pennsylvania	Maryland	—	Wife
1930	Mary A. Carroll		King, Washington	Maryland	—	Head
1930	Mary G Carroll		Jackson, Missouri	Virginia	None	Head
1940	Mary Carroll	69	Bronx-County, New York	Ireland	Stenographer	Head
1940	Mary Carroll	47	Bergen-County, New Jersey	Ireland	—	Wife
1940	Mary E. Carroll	71	Jefferson-County, Illinois	Tennessee	—	Head

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About Mary Carroll US Census Records & Model Tree

We've indexed 14213 free, proprietary US Census records for Mary Carroll across 1900–1950, covering 49 states, DC, and 1 territory: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, 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 14213 US Census records for Mary Carroll, from 1900 to 1950, across 49 states, DC, and 1 territory.
: 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 Carroll'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 Carroll 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 Carroll records from the 1900 through 1950 US Federal Census, across 49 states, DC, and 1 territory. 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.

Other Carroll US Census Records

Catherine Carroll Charles Carroll Edward Carroll Elizabeth Carroll George Carroll James Carroll John Carroll Joseph Carroll Margaret Carroll Robert Carroll Thomas Carroll William Carroll

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