How many Mary Ross census records do you have?

We have 20961 US Census records for Mary Ross, from 1900 to 1950, across 50 states, DC, and 1 territory.

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

Yes. All Mary Ross 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 Ross?

We have Mary Ross 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 Ross 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 Ross?

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 Ross — US Census Records & Model Tree

We found 20961 free census records for Mary Ross across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 2287 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Ross Census Records by State & County

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Showing of 20961 records for Mary Ross US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary Ross	22	Plymouth-County, Massachusetts	Massachusetts	—	Daughter
1940	Mary Ross	23	Richland-County, South Carolina	South Carolina	Checker	Daughter
1920	Mary Ross		Westmoreland, Pennsylvania	Italy	—	Wife
1940	Mary Ross	28	Davis-County, Utah	Utah	Labor	Daughter
1940	Mary Louise Ross	21	Saginaw-County, Michigan	Michigan	Bookkeeper	Daughter
1940	Mary Ross	30	Wayne-County, Michigan	Scotland	—	Wife
1940	Mary Ross	30	Pottawattamie-County, Iowa	Nebraska	School Teacher	Daughter
1940	Mary E Ross	41	Montgomery-County, Alabama	Alabama	—	Daughter
1920	Mary A Ross		X, Maryland	Maryland	Laundress	Head
1920	Mary Ross		Fulton, Georgia	Georgia	Laundress	Head
1940	Mary Ross	57	Wayne-County, Michigan	Scotland	—	Wife
1920	Mary Ross		Jefferson, Alabama	Alabama	—	Wife
1920	Mary F. Ross		Roane, West Virginia	West Virginia	None	Wife
1940	Mary Eva Ross	65	Davis-County, Utah	Utah	Farmer	Head
1940	Mary Ross	72	Polk-County, Iowa	Iowa	—	Wife
1920	Mary Ross		Worcester, Massachusetts	England	—	Wife
1930	Mary E. Ross		Jefferson, Kentucky	Kentucky	—	Head
1920	Mary J Ross		Gosper, Nebraska	England	Farming	Head
1910	Mary Ross		Philadelphia, Pennsylvania	Ireland	—	Head
1900	Mary Ross	46	Cook, Illinois	Germany	—	Wife
1920	Mary Ross		Gogebic, Michigan	Vermont	—	Wife
1930	Mary Ross		Philadelphia, Pennsylvania	Italy	—	Wife
1920	Mary E Ross		Montgomery, Maryland	Maryland	—	Wife
1940	Mary Ross	39	Noxubee-County, Mississippi	Mississippi	—	Wife
1920	Mary E Ross		Essex, Massachusetts	Maine	Stitcher	Head
1920	Mary Ross		Montrose, Colorado	Norway	None	Wife
1920	Mary A Ross		Oklahoma, Oklahoma	Kansas	None	Wife
1940	Mary Ross	71	Anderson-County, Kansas	Scotland	—	Head
1940	Mary Ross	55	San-Francisco-County, California	California	—	Wife
1920	Mary E. Ross		Hennepin, Minnesota	Wisconsin	Machine Operator	Head

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About Mary Ross US Census Records & Model Tree

We've indexed 20961 free, proprietary US Census records for Mary Ross across 1900–1950, covering 50 states, DC, and 1 territory: Alabama, Alaska, 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, U.S. Virgin Islands, 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 20961 US Census records for Mary Ross, 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 Ross'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 Ross 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 Ross 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.