How many Mary Crosby census records do you have?

We have 3949 US Census records for Mary Crosby, from 1900 to 1950, across 49 states and DC.

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

Yes. All Mary Crosby 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 Crosby?

We have Mary Crosby 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 Crosby 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 Crosby?

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 Crosby — US Census Records & Model Tree

We found 3949 free census records for Mary Crosby across 6 census years (1900–1950), in 49 states and DC and 1000 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Crosby Census Records by State & County

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Showing of 3949 records for Mary Crosby US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1910	Mary Crosby		Fairfield, South Carolina	South Carolina	—	Daughter
1940	Mary Crosby	22	Suffolk-County, Massachusetts	Massachusetts	Laundress	Daughter
1940	Mary O Crosby	70	Jones-County, Mississippi	Mississippi	—	Head
1920	Mary Crosby		Colleton, South Carolina	South Carolina	—	Wife
1930	Mary Crosby		Jasper, Mississippi	Mississippi	—	Wife
1940	Mary Crosby	44	Burnett-County, Wisconsin	Montana	—	Wife
1930	Mary Crosby		Jefferson, Kentucky	Kentucky	Stemmer	Head
1940	Mary H. Crosby	61	Colleton-County, South Carolina	South Carolina	Farming	Head
1930	Mary J Crosby		Oakland, Michigan	Michigan	Stock Man	Daughter
1940	Mary Maude Crosby	12	Anderson-County, South Carolina	South Carolina	—	Daughter
1910	Mary Crosby		Westmoreland, Pennsylvania	Pennsylvania	—	Wife
1920	Mary Lou Crosby		Mitchell, Georgia	Georgia	None	Daughter
1920	Mary Crosby		Fairfield, South Carolina	South Carolina	Farm Laborer	Daughter
1940	Mary A. Crosby	16	Westmoreland-County, Virginia	Virginia	—	Daughter
1940	Mary Crosby	27	Cook-County, Illinois	Illinois	Laundry Girl	Daughter
1940	Mary Crosby	40	Morehouse-County, Louisiana	Louisiana	0	Wife
1900	Mary Crosby	1	Luzerne, Pennsylvania	Pennsylvania	—	Daughter
1930	Mary Crosby		Jefferson, Arkansas	Arkansas	—	Wife
1910	Mary Crosby		Troup, Georgia	Georgia	—	Daughter
1910	Mary Crosby		Union, South Carolina	South Carolina	None	Daughter
1940	Mary Crosby	46	Colleton-County, South Carolina	South Carolina	—	Wife
1910	Mary Crosby		Kings, New York	New York	—	Daughter
1920	Mary Crosby		Jones, Mississippi	Mississippi	—	Daughter
1940	Mary Crosby	19	Union-County, New Jersey	New Jersey	Laborer	Daughter
1940	Mary Crosby	19	Fayette-County, Kentucky	Kentucky	Cook	Daughter
1940	Mary Helen Crosby	13	Hempstead-County, Arkansas	Arkansas	—	Daughter
1920	Mary Crosby		Providence, Rhode Island	Rhode Island	Carder	Daughter
1940	Mary Kate Crosby	10	Leake-County, Mississippi	Mississippi	—	Daughter
1910	Mary B Crosby		Chester, South Carolina	South Carolina	None	Daughter
1940	Mary J. Crosby	10	Webster-County, Iowa	Iowa	—	Daughter

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About Mary Crosby US Census Records & Model Tree

We've indexed 3949 free, proprietary US Census records for Mary Crosby across 1900–1950, covering 49 states and DC: 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, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin.

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 3949 US Census records for Mary Crosby, 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 Crosby'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 Crosby 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 Crosby 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.