How many Mary Collier census records do you have?

We have 3257 US Census records for Mary Collier, from 1900 to 1950, across 49 states and DC.

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

Yes. All Mary Collier 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 Collier?

We have Mary Collier 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 Collier 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 Collier?

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 Collier — US Census Records & Model Tree

We found 3257 free census records for Mary Collier across 6 census years (1900–1950), in 49 states and DC and 1058 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Collier Census Records by State & County

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Showing of 3257 records for Mary Collier US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	Mary E Collier		Morgan, Alabama	Alabama	—	Wife
1940	Mary Collier	39	Greene-County, Virginia	Virginia	—	Wife
1940	Mary Collier	44	Allegheny-County, Pennsylvania	Georgia	—	Wife
1930	Mary K. Collier		Columbus, North Carolina	North Carolina	None	Daughter
1940	Mary B. Collier	71	Winston-County, Mississippi	Mississippi	—	Head
1940	Mary E. Collier	33	Albemarle-County, Virginia	Virginia	—	Wife
1930	Mary Edna Collier		Polk, Florida	Florida	Secretary	Daughter
1940	Mary Collier	52	Johnston-County, North Carolina	North Carolina	—	Wife
1930	Mary Collier		Bristol, Massachusetts	Massachusetts	Clerk	Daughter
1940	Mary Collier	15	Suffolk-County, Massachusetts	Massachusetts	—	Daughter
1940	Mary Collier	29	Albemarle-County, Virginia	Virginia	Housekeeper	Wife
1940	Mary J. Collier	14	Lake-County, Oregon	Oregon	—	Daughter
1910	Mary Collier		Jefferson, Alabama	Alabama	—	Wife
1920	Mary Collier		Edgefield, South Carolina	South Carolina	Farm Laborer	Daughter
1920	Mary Collier		Lee, Virginia	Kentucky	—	Wife
1920	Mary Collier		Harris, Texas	Mexico	—	Daughter
1930	Mary L. Collier		Lee, Alabama	Alabama	Operator	Daughter
1930	Mary L Collier		Ray, Missouri	Missouri	—	Daughter
1910	Mary Collier		Franklin, Texas	Texas	—	Wife
1930	Mary J. Collier		Orangeburg, South Carolina	South Carolina	None	Daughter
1930	Mary Collier		Fulton, Georgia	Georgia	None	Daughter
1910	Mary E. Collier		Clay, Missouri	Missouri	—	Wife
1940	Mary Collier	45	San-Jacinto-County, Texas	Texas	—	Wife
1940	Mary B. Collier	24	Morgan-County, Alabama	Alabama	Teacher	Daughter
1940	Mary E. Collier	14	Fulton-County, Georgia	Georgia	Student	Daughter
1940	Mary Lou Collier	10	Floyd-County, Kentucky	Kentucky	—	Daughter
1940	Mary Alice Collier	11	Humphreys-County, Tennessee	Tennessee	—	Daughter
1940	Mary Collier	38	Duval-County, Florida	Georgia	Maid	Head
1920	Mary J Collier		Oklahoma, Oklahoma	Kentucky	—	Wife
1930	Mary E Collier		Dinwiddie, Virginia	Virginia	—	Wife

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About Mary Collier US Census Records & Model Tree

We've indexed 3257 free, proprietary US Census records for Mary Collier across 1900–1950, covering 49 states and DC: Alabama, Alaska, 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, 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 3257 US Census records for Mary Collier, 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 Collier'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 Collier 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 Collier 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.