How many Mary Collins census records do you have?

We have 26561 US Census records for Mary Collins, from 1900 to 1950, across 50 states, DC, and 2 territories.

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

Yes. All Mary Collins 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 Collins?

We have Mary Collins 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 Collins 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 Collins?

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 Collins — US Census Records & Model Tree

We found 26561 free census records for Mary Collins across 6 census years (1900–1950), in 50 states, DC, and 2 territories and 2236 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Collins Census Records by State & County

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Showing of 26561 records for Mary Collins US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary E. Collins	40	Essex-County, Massachusetts	New Hampshire	Salesgirl	Daughter
1940	Mary E. Collins	32	Rutland-County, Vermont	Vermont	Cook	Wife
1940	Mary Collins	26	Crawford-County, Kansas	Kansas	Teacher	Daughter
1940	Mary G. Collins	40	Sussex-County, Delaware	Delaware	Trimmer	Wife
1940	Mary Anne Collins	20	Republic-County, Kansas	Kansas	New Worker	Daughter
1910	Mary M Collins		Ritchie, West Virginia	West Virginia	—	Wife
1940	Mary H. Collins	48	Kent-County, Delaware	Delaware	Laborer	Wife
1910	Mary Collins		New York, New York	Germany	—	Wife
1940	Mary Collins	60	Essex-County, Massachusetts	England	Winder	Wife
1940	Mary Ellen Collins	24	Providence-County, Rhode Island	Rhode Island	—	Wife
1940	Mary G. Collins	51	Middlesex-County, Massachusetts	England	—	Wife
1920	Mary E Collins		Washington, Kansas	Kansas	—	Wife
1940	Mary Collins	60	Los-Angeles-County, California	Oregon	Salad Maker	Wife
1940	Mary E. Collins	67	Multnomah-County, Oregon	Washington	—	Wife
1920	Mary Collins		Crawford, Kansas	Kansas	—	Wife
1910	Mary Collins		Oneida, New York	England	None	Head
1910	Mary Collins		Dorchester, Maryland	Maryland	—	Daughter
1930	Mary Collins		Hinds, Mississippi	Mississippi	Laborer	Son
1920	Mary Collins		Vernon, Wisconsin	Wisconsin	At School	Daughter
1940	Mary A. Collins	12	Early-County, Georgia	Georgia	—	Daughter
1930	Mary Collins		Floyd, Kentucky	Kentucky	—	Daughter
1910	Mary Collins		Baltimore, Maryland	Maryland	—	Daughter
1910	Mary Collins		Choctaw, Alabama	Alabama	—	Daughter
1930	Mary Collins		Lowndes, Georgia	Georgia	—	Daughter
1940	Mary Collins	12	Lincoln-County, Mississippi	Mississippi	—	Daughter
1940	Mary Collins	12	Sioux-County, Iowa	Iowa	—	Daughter
1920	Mary Collins		Surry, North Carolina	North Carolina	Farm Laborer	Daughter
1940	Mary Collins	32	Bronx-County, New York	Irish Free State	—	Wife
1910	Mary A Collins		Montgomery, Pennsylvania	Delaware	—	Wife
1910	Mary Collins		Tattnall, Georgia	Georgia	None	Daughter

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About Mary Collins US Census Records & Model Tree

We've indexed 26561 free, proprietary US Census records for Mary Collins 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 26561 US Census records for Mary Collins, 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 Collins'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 Collins 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 Collins 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.