How many Mary Butler census records do you have?

We have 19619 US Census records for Mary Butler, from 1900 to 1950, across 50 states, DC, and 1 territory.

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

Yes. All Mary Butler 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 Butler?

We have Mary Butler 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 Butler 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 Butler?

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 Butler — US Census Records & Model Tree

We found 19619 free census records for Mary Butler across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 2066 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Butler Census Records by State & County

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Showing of 19619 records for Mary Butler US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	Mary J. Butler		Providence, Rhode Island	Rhode Island	Booker	Daughter
1940	Mary E Butler	28	Henderson-County, Kentucky	Kentucky	—	Wife
1910	Mary Butler		New Castle, Delaware	Delaware	—	Head
1920	Mary Butler		Suffolk, Massachusetts	Ireland	—	Wife
1940	Mary E. Butler	47	Caroline-County, Maryland	Delaware	—	Wife
1940	Mary Butler	46	Edgefield-County, South Carolina	South Carolina	—	Wife
1940	Mary Butler	36	Charles-County, Maryland	Maryland	—	Wife
1920	Mary E Butler		Middlesex, Massachusetts	Ireland	—	Wife
1920	Mary Butler		Charles, Maryland	Maryland	—	Wife
1900	Mary Butler	25	Greenwood, South Carolina	South Carolina	—	Wife
1940	Mary Butler	69	District-Of-Columbia-County, District of Columbia	Virginia	—	Head
1910	Mary Butler		New York, New York	Ireland	Dressmaker	Head
1920	Mary Butler		Bristol, Massachusetts	Ireland	—	Wife
1940	Mary Ann Butler	72	Washington-County, Pennsylvania	England	—	Head
1940	Mary Butler	74	Providence-County, Rhode Island	Scotland	—	Head
1940	Mary Butler	44	Champaign-County, Illinois	Indiana	—	Wife
1940	Mary Butler	56	Los-Angeles-County, California	Ireland	—	Wife
1920	Mary A. Butler		Camden, New Jersey	Delaware	—	Wife
1930	Mary Butler		Kings, New York	Ireland	—	Head
1920	Mary Butler		New York, New York	England	—	Wife
1940	Mary Butler	62	Scott-County, Iowa	Denmark	—	Wife
1920	Mary Butler		Kings, New York	Ireland	—	Head
1940	Mary Butler	54	Philadelphia-County, Pennsylvania	Maryland	Seamstress	Head
1920	Mary Butler		Kings, New York	Ireland	—	Wife
1910	Mary Butler		Duval, Florida	Florida	—	Wife
1940	Mary H. Butler	81	Gloucester-County, New Jersey	Holland	—	Head
1930	Mary Butler		None, Maryland	Maryland	—	Head
1930	Mary E Butler		St Joseph, Indiana	England	None	Head
1930	Mary E. Butler		Philadelphia, Pennsylvania	Pennsylvania	Clerk	Head
1940	Mary E. Butler	11	Charles-County, Maryland	Maryland	—	Daughter

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About Mary Butler US Census Records & Model Tree

We've indexed 19619 free, proprietary US Census records for Mary Butler 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 19619 US Census records for Mary Butler, 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 Butler'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 Butler 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 Butler 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.