How many Mary Lucas census records do you have?

We have 8612 US Census records for Mary Lucas, from 1900 to 1950, across 50 states, DC, and 2 territories.

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

Yes. All Mary Lucas 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 Lucas?

We have Mary Lucas 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 Lucas 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 Lucas?

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 Lucas — US Census Records & Model Tree

We found 8612 free census records for Mary Lucas across 6 census years (1900–1950), in 50 states, DC, and 2 territories and 1475 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Lucas Census Records by State & County

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Showing of 8612 records for Mary Lucas US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary E. Lucas	24	Marion-County, Indiana	Indiana	Stenographer	Daughter
1940	Mary M. Lucas	23	Owen-County, Indiana	Indiana	—	Daughter
1920	Mary Lucas		Sharkey, Mississippi	Mississippi	None	Daughter
1910	Mary A Lucas		Saline, Missouri	Missouri	Wash Woman	Wife
1930	Mary Lucas		Catahoula, Louisiana	Mississippi	Operator	Wife
1930	Mary Lucas		Philadelphia, Pennsylvania	Lithuania	—	Wife
1920	Mary Lucas		Mercer, Pennsylvania	Austria	—	Wife
1930	Mary Lucas		Claiborne, Louisiana	Louisiana	—	Wife
1910	Mary Lucas		Bolivar, Mississippi	Mississippi	Farm Labor	Wife
1920	Mary Lucas		York, South Carolina	South Carolina	—	Wife
1930	Mary Lucas		Winnebago, Illinois	Lithuania	None	Wife
1940	Mary Lucas	44	Wayne-County, Michigan	Hungary	—	Wife
1930	Mary P Lucas		Brown, Illinois	Illinois	None	Wife
1920	Mary Lucas		Giles, Virginia	Virginia	—	Wife
1930	Mary Lucas		Fremont, Colorado	England	—	Wife
1930	Mary Lucas		Cook, Illinois	Poland	—	Wife
1940	Mary Lucas	32	Carter-County, Kentucky	Kentucky	—	Wife
1940	Mary Lucas	41	Madison-County, Illinois	Tennessee	—	Wife
1900	Mary Lucas	41	Chesterfield, South Carolina	South Carolina	—	Wife
1940	Mary Lucas	11	Nash-County, North Carolina	North Carolina	—	Daughter
1940	Mary Lucas	18	Stanislaus-County, California	California	—	Daughter
1930	Mary Lucas		Butler, Alabama	Alabama	Farm Labor	Daughter
1930	Mary Lucas		Erie, New York	Italy	—	Wife
1940	Mary Lucas	20	Marion-County, Oregon	Montana	Housekeeper	Daughter
1940	Mary Lou Lucas	11	Todd-County, Minnesota	Minnesota	—	Daughter
1920	Mary Lucas		Crawford, Georgia	Georgia	None	Daughter
1940	Mary Lucas	43	Washington-County, Pennsylvania	Austria	—	Wife
1920	Mary Lucas		Breckinridge, Kentucky	Kentucky	None	Daughter
1930	Mary Lucas		Wake, North Carolina	North Carolina	Cook	Daughter
1940	Mary Lucas	49	Logan-County, West Virginia	West Virginia	Same Place	Wife

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About Mary Lucas US Census Records & Model Tree

We've indexed 8612 free, proprietary US Census records for Mary Lucas 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, 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 8612 US Census records for Mary Lucas, 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 Lucas'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 Lucas 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 Lucas 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.