How many Mary Dean census records do you have?

We have 7923 US Census records for Mary Dean, from 1900 to 1950, across 50 states and DC.

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

Yes. All Mary Dean 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 Dean?

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

How do I find Mary Dean 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 Dean?

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 Dean — US Census Records & Model Tree

We found 7923 free census records for Mary Dean across 6 census years (1900–1950), in 50 states and DC and 1595 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Dean Census Records by State & County

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Showing of 7923 records for Mary Dean US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary Dean	21	Laurens-County, South Carolina	South Carolina	—	Daughter
1940	Mary Dean	32	Jessamine-County, Kentucky	Kentucky	—	Wife
1940	Mary F Dean	21	Vigo-County, Indiana	Indiana	—	Daughter
1940	Mary E Dean	75	Norfolk-County, Massachusetts	Maine	Housekeeper	Wife
1920	Mary E. Dean		Collin, Texas	Missouri	—	Wife
1940	Mary Dean	45	Madison-County, Georgia	Georgia	Housewife	Wife
1920	Mary Dean		Bibb, Georgia	Georgia	—	Wife
1930	Mary H. Dean		Daviess, Kentucky	Kentucky	—	Head
1920	Mary J. Dean		Dorchester, Maryland	Maryland	Housekeeper	Head
1940	Mary H. Dean	70	Wayne-County, Michigan	Michigan	—	Wife
1930	Mary K. Dean		Fulton, Ohio	Ohio	—	Head
1930	Mary Dean		Dallas, Texas	Georgia	—	Head
1940	Mary Dean	40	Cherokee-County, Georgia	Georgia	—	Wife
1910	Mary Dean		Greenwood, South Carolina	South Carolina	—	Daughter
1920	Mary Dean		Providence, Rhode Island	Rhode Island	Operator	Daughter
1920	Mary Dean		Cumberland, Virginia	Virginia	—	Head
1910	Mary M Dean		Bibb, Georgia	Georgia	None	Daughter
1930	Mary Dean		Kanawha, West Virginia	West Virginia	—	Wife
1920	Mary Dean		Crittenden, Kentucky	Kentucky	—	Daughter
1930	Mary L Dean		Madison, Georgia	Georgia	—	Daughter
1940	Mary Dean	19	Sunflower-County, Mississippi	Mississippi	—	Daughter
1910	Mary A. Dean		Braxton, West Virginia	West Virginia	—	Wife
1900	Mary Dean	39	Greenwood, South Carolina	South Carolina	—	Wife
1940	Mary Dean	31	Wayne-County, Michigan	Alabama	—	Wife
1930	Mary Elizabeth Dean		Douglas, Nebraska	Nebraska	—	Daughter
1940	Mary Dean	19	Baldwin-County, Georgia	Georgia	—	Daughter
1910	Mary Dean		Scott, Minnesota	Minnesota	—	Wife
1930	Mary Dean		Nash, North Carolina	North Carolina	—	Daughter
1920	Mary L Dean		Anderson, South Carolina	South Carolina	—	Daughter
1900	Mary Dean	51	Grand Traverse, Michigan	Michigan	—	Wife

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About Mary Dean US Census Records & Model Tree

We've indexed 7923 free, proprietary US Census records for Mary Dean across 1900–1950, covering 50 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, 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 7923 US Census records for Mary Dean, from 1900 to 1950, across 50 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 Dean'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 Dean 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 Dean records from the 1900 through 1950 US Federal Census, across 50 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.