How many Mary Anderson census records do you have?

We have 52106 US Census records for Mary Anderson, from 1900 to 1950, across 50 states, DC, and 2 territories.

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

Yes. All Mary Anderson 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 Anderson?

We have Mary Anderson records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 territories. Use the year and state filters to narrow your results.

How do I find Mary Anderson 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 Anderson?

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 Anderson — US Census Records & Model Tree

We found 52106 free census records for Mary Anderson across 6 census years (1900–1950), in 50 states, DC, and 2 territories and 2782 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Anderson Census Records by State & County

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Showing of 52106 records for Mary Anderson US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1910	Mary Anderson		St Louis, Minnesota	Finland	—	Wife
1940	Mary E. Anderson	38	Cumberland-County, Virginia	Virginia	—	Wife
1910	Mary Anderson		Rapides, Louisiana	Louisiana	—	Daughter
1940	Mary Anderson	22	Madison-County, Idaho	Idaho	Teaching	Daughter
1920	Mary Anderson		Passaic, New Jersey	New Jersey	Operator	Daughter
1930	Mary Anderson		Banks, Georgia	Georgia	—	Daughter
1940	Mary E. Anderson	22	Frederick-County, Maryland	Maryland	—	Daughter
1930	Mary Anderson		Frederick, Maryland	Maryland	None	Daughter
1930	Mary E Anderson		Orange, Florida	Florida	—	Daughter
1940	Mary Anderson	34	Sedgwick-County, Kansas	Missouri	Teacher	Daughter
1930	Mary Anderson		Shawnee, Kansas	Indiana	—	Head
1910	Mary Anderson		Worcester, Massachusetts	Finland	None	Wife
1930	Mary Anderson		King, Washington	Finland	—	Wife
1920	Mary Anderson		Washington, Indiana	Indiana	—	Wife
1940	Mary A. Anderson	48	Kings-County, New York	Ireland	—	Wife
1930	Mary Anderson		New York, New York	Ireland	—	Wife
1930	Mary Anderson		Ashland, Wisconsin	Finland	—	Wife
1940	Mary P Anderson	64	Wadena-County, Minnesota	Finland	—	Wife
1940	Mary K. Anderson	40	Clark-County, South Dakota	Belgium	—	Wife
1920	Mary Anderson		Cook, Illinois	Ireland	—	Head
1920	Mary A. Anderson		King, Washington	England	—	Wife
1920	Mary Anderson		New Castle, Delaware	Delaware	—	Wife
1910	Mary E. Anderson		Baltimore, Maryland	Maryland	—	Wife
1940	Mary M Anderson	64	Rock-Island-County, Illinois	Wisconsin	—	Wife
1940	Mary Anderson	53	Marion-County, Indiana	Scotland	—	Wife
1940	Mary Anderson	62	Kanawha-County, West Virginia	West Virginia	—	Wife
1940	Mary Anderson	44	Camden-County, New Jersey	England	—	Wife
1940	Mary Anderson	48	Sullivan-County, Indiana	Scotland	—	Wife
1940	Mary Anderson	50	Bronx-County, New York	Rhode Island	—	Head
1920	Mary Anderson		Snohomish, Washington	Finland	None	Wife

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About Mary Anderson US Census Records & Model Tree

We've indexed 52106 free, proprietary US Census records for Mary Anderson across 1900–1950, covering 50 states, DC, and 2 territories: 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, Puerto Rico, 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 52106 US Census records for Mary Anderson, from 1900 to 1950, across 50 states, DC, and 2 territories.
: 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 Anderson'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 Anderson 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 Anderson records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 territories. 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.