How many Mary Grimes census records do you have?

We have 3596 US Census records for Mary Grimes, from 1900 to 1950, across 47 states and DC.

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

Yes. All Mary Grimes 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 Grimes?

We have Mary Grimes records from the 1900 through 1950 US Federal Census, across 47 states and DC. Use the year and state filters to narrow your results.

How do I find Mary Grimes 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 Grimes?

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 Grimes — US Census Records & Model Tree

We found 3596 free census records for Mary Grimes across 6 census years (1900–1950), in 47 states and DC and 988 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 3596 records for Mary Grimes US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary Grimes	20	Jefferson-County, Kentucky	Kentucky	—	Daughter
1940	Mary M. Grimes	52	Maricopa-County, Arizona	Kansas	—	Wife
1940	Mary A. Grimes	37	Santa-Barbara-County, California	Oregon	—	Wife
1920	Mary Grimes		Pettis, Missouri	Missouri	—	Daughter
1910	Mary Grimes		Marion, Indiana	Indiana	—	Wife
1940	Mary Grimes	38	Angelina-County, Texas	Texas	Same Place	Wife
1920	Mary A. Grimes		Essex, Massachusetts	Massachusetts	—	Daughter
1940	Mary Grimes	43	Mississippi-County, Missouri	Missouri	Housewife	Wife
1930	Mary Grimes		Providence, Rhode Island	Rhode Island	—	Daughter
1930	Mary E. Grimes		Providence, Rhode Island	Rhode Island	Bookkeeper	Daughter
1940	Mary Grimes	49	Philadelphia-County, Pennsylvania	Scotland	—	Wife
1900	Mary Grimes	26	Pottawatomie, Oklahoma	Kansas	—	Wife
1910	Mary E. Grimes		Frederick, Maryland	Maryland	—	Daughter
1940	Mary E. Grimes	47	Hinsdale-County, Colorado	Colorado	—	Wife
1940	Mary Grimes	48	Washington-County, Alabama	Alabama	—	Wife
1940	Mary Louise Grimes	16	Marshall-County, Iowa	Iowa	—	Daughter
1940	Mary A. Grimes	53	Bristol-County, Massachusetts	England	House Cleaner	Daughter
1940	Mary Grimes	78	Bristol-County, Massachusetts	England	—	Head
1930	Mary Ruth Grimes		Williamson, Texas	Texas	None	Daughter
1940	Mary Grimes	40	Jackson-County, Missouri	Missouri	—	Wife
1940	Mary V Grimes	13	Henry-County, Missouri	Missouri	—	Daughter
1910	Mary E Grimes		Baltimore, Maryland	Delaware	None	Daughter
1930	Mary Grimes		Campbell, Kentucky	Tennessee	—	Wife
1910	Mary Grimes		Floyd, Indiana	Indiana	—	Wife
1940	Mary Grimes	45	Wayne-County, Michigan	Alabama	—	Wife
1930	Mary M. Grimes		Hinsdale, Colorado	Colorado	—	Daughter
1940	Mary Grimes	39	Monongalia-County, West Virginia	West Virginia	—	Wife
1910	Mary E Grimes		Douglas, Nebraska	Nebraska	School Teacher	Daughter
1940	Mary C. Grimes	63	Providence-County, Rhode Island	Maine	—	Wife
1940	Mary Grimes	57	Livingston-County, Missouri	Missouri	—	Wife

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About Mary Grimes US Census Records & Model Tree

We've indexed 3596 free, proprietary US Census records for Mary Grimes across 1900–1950, covering 47 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, 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 3596 US Census records for Mary Grimes, from 1900 to 1950, across 47 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 Grimes'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 Grimes 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 Grimes records from the 1900 through 1950 US Federal Census, across 47 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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