How many Mary Grace census records do you have?

We have 3292 US Census records for Mary Grace, from 1900 to 1950, across 49 states and DC.

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

Yes. All Mary Grace 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 Grace?

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

How do I find Mary Grace 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 Grace?

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 Grace — US Census Records & Model Tree

We found 3292 free census records for Mary Grace across 6 census years (1900–1950), in 49 states and DC and 772 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Grace Census Records by State & County

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Showing of 3292 records for Mary Grace US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Mary E. Grace		Bristol, Massachusetts	Massachusetts	—	Daughter
1930	Mary Grace		Jefferson, Alabama	Alabama	—	Daughter
1920	Mary Grace		Bristol, Massachusetts	Azores	None	Wife
1910	Mary Grace		Jefferson, Alabama	Alabama	—	Wife
1910	Mary L. Grace		Pike, Alabama	Georgia	—	Wife
1930	Mary E. Grace		Delaware, Pennsylvania	Pennsylvania	—	Daughter
1920	Mary Grace		Butte, California	Minnesota	—	Daughter
1910	Mary Grace		Conecuh, Alabama	Alabama	Farm Laborer	Daughter
1940	Mary C. Grace	17	St.-Louis-County, Missouri	Missouri	—	Daughter
1940	Mary Grace	42	Kings-County, New York	Ireland	—	Wife
1910	Mary Grace		Suffolk, Massachusetts	Portugal	None	Wife
1940	Mary Grace	20	Mercer-County, Pennsylvania	Pennsylvania	Receptionist	Daughter
1910	Mary Grace		Cook, Illinois	Ireland	None	Wife
1940	Mary Grace	18	Baltimore-County, Maryland	Maryland	Stenographer	Daughter
1920	Mary Grace		Dodge, Wisconsin	Wisconsin	—	Daughter
1940	Mary A. Grace	44	Rutland-County, Vermont	Vermont	—	Wife
1940	Mary L. Grace	35	Utah-County, Utah	Utah	—	Wife
1920	Mary E Grace		Texas, Oklahoma	Tennessee	Farmer	Head
1940	Mary Kathryn Grace	18	Macon-County, Illinois	Illinois	—	Daughter
1930	Mary A. Grace		Franklin, Nebraska	Nebraska	None	Daughter
1940	Mary Jane Grace	20	Kings-County, New York	South Carolina	Saleswoman	Daughter
1910	Mary E. Grace		Jo Daviess, Illinois	New York	—	Wife
1930	Mary A. Grace		Maricopa, Arizona	Arizona	None	Daughter
1940	Mary Grace	34	Desoto-County, Louisiana	Louisiana	Laundress	Wife
1930	Mary J Grace		Ray, Missouri	Missouri	—	Daughter
1940	Mary Ellen Grace	20	Baltimore-County, Maryland	Maryland	Bookkeeper	Daughter
1940	Mary K Grace	53	Essex-County, New Jersey	Irish Free State	—	Wife
1930	Mary Grace		Kent, Delaware	Delaware	—	Daughter
1940	Mary Grace	64	Mingo-County, West Virginia	Kentucky	—	Wife
1940	Mary Grace	17	Franklin-County, Ohio	Ohio	—	Daughter

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About Mary Grace US Census Records & Model Tree

We've indexed 3292 free, proprietary US Census records for Mary Grace across 1900–1950, covering 49 states and DC: Alabama, 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 3292 US Census records for Mary Grace, from 1900 to 1950, across 49 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 Grace'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 Grace 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 Grace records from the 1900 through 1950 US Federal Census, across 49 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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