How many Mary Black census records do you have?

We have 12502 US Census records for Mary Black, from 1900 to 1950, across 50 states, DC, and 1 territory.

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

Yes. All Mary Black 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 Black?

We have Mary Black records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find Mary Black 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 Black?

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 Black — US Census Records & Model Tree

We found 12502 free census records for Mary Black across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 1896 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Black Census Records by State & County

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Showing of 12502 records for Mary Black US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary Black	40	Hudson-County, New Jersey	New Jersey	Clerk	Head
1900	Mary Isabel Black	43	Callaway, Missouri	Missouri	—	Wife
1930	Mary H Black		Albany, New York	New Jersey	Stenographer	Daughter
1940	Mary Black	21	Franklin-County, Ohio	Ohio	—	Daughter
1910	Mary Black		Butler, Alabama	Alabama	Farmer	Wife
1930	Mary Black		Sangamon, Illinois	Kentucky	Paper Hanger	Wife
1940	Mary Black	47	Richmond-County, Georgia	Georgia	Day Hand	Head
1920	Mary E. Black		Augusta, Virginia	Virginia	—	Wife
1940	Mary Black	38	Marion-County, Indiana	Tennessee	—	Wife
1920	Mary A. Black		Perry, Pennsylvania	Pennsylvania	—	Wife
1940	Mary Black	43	Fulton-County, Georgia	Georgia	—	Wife
1920	Mary Black		Tallapoosa, Alabama	Alabama	—	Wife
1910	Mary Black		Bexar, Texas	Texas	—	Wife
1940	Mary Black	60	Montgomery-County, Arkansas	Arkansas	—	Wife
1940	Mary Black	52	Smith-County, Texas	Texas	—	Wife
1940	Mary E. Black	54	Baltimore-City-County, Maryland	Maryland	—	Wife
1940	Mary Black	61	Edgefield-County, South Carolina	South Carolina	—	Wife
1940	Mary J. Black	45	New-York-County, New York	Ireland	—	Wife
1940	Mary Black	56	Bronx-County, New York	New York	—	Head
1940	Mary Black	67	Polk-County, Iowa	Ireland	—	Wife
1940	Mary U Black	76	Wilson-County, Kansas	Indiana	—	Head
1920	Mary Black		New York, New York	Florida	Laundress	Wife
1930	Mary A. Black		Madison, Iowa	Iowa	—	Daughter
1910	Mary F Black		Cleveland, Oklahoma	Tennessee	—	Daughter
1940	Mary Black	16	Mcnairy-County, Tennessee	Tennessee	—	Daughter
1910	Mary Black		Allegheny, Pennsylvania	Virginia	None	Wife
1910	Mary Black		Richmond, North Carolina	North Carolina	Home Farm	Wife
1910	Mary Black		Buncombe, North Carolina	North Carolina	—	Wife
1940	Mary Black	42	Davidson-County, Tennessee	Tennessee	—	Wife
1940	Mary Black	12	Schley-County, Georgia	Georgia	—	Daughter

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About Mary Black US Census Records & Model Tree

We've indexed 12502 free, proprietary US Census records for Mary Black across 1900–1950, covering 50 states, DC, and 1 territory: Alabama, Alaska, 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 12502 US Census records for Mary Black, from 1900 to 1950, across 50 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 Black'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 Black 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 Black records from the 1900 through 1950 US Federal Census, across 50 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.

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