How many Mary Warner census records do you have?

We have 7292 US Census records for Mary Warner, from 1900 to 1950, across 49 states and DC.

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

Yes. All Mary Warner 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 Warner?

We have Mary Warner 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 Warner 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 Warner?

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 Warner — US Census Records & Model Tree

We found 7292 free census records for Mary Warner across 6 census years (1900–1950), in 49 states and DC and 1351 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Warner Census Records by State & County

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Showing of 7292 records for Mary Warner US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary Lou Warner	21	Winnebago-County, Illinois	Iowa	Gen Office	Daughter
1940	Mary E Warner	29	Lancaster-County, Pennsylvania	Pennsylvania	—	Wife
1900	Mary Warner	49	Erie, New York	Germany	—	Wife
1930	Mary E Warner		Montgomery, Pennsylvania	Pennsylvania	—	Wife
1920	Mary G. Warner		Clark, Wisconsin	Wisconsin	—	Head
1940	Mary E. Warner	62	Summit-County, Ohio	Pennsylvania	—	Wife
1920	Mary Warner		Pierce, Washington	Germany	None	Wife
1930	Mary J. Warner		Spokane, Washington	Minnesota	—	Wife
1940	Mary E Warner	56	Nodaway-County, Missouri	Missouri	House Keeper	Wife
1940	Mary Warner	62	Jessamine-County, Kentucky	Kentucky	Proprietor	Head
1920	Mary F Warner		Essex, Massachusetts	Massachusetts	—	Head
1940	Mary Warner	10	Cayuga-County, New York	New York	—	Daughter
1910	Mary E Warner		Orange, New York	New Jersey	—	Wife
1940	Mary Warner	38	Hudson-County, New Jersey	New Jersey	—	Wife
1930	Mary M Warner		Jefferson, Pennsylvania	Pennsylvania	—	Daughter
1940	Mary Jane Warner	12	Carroll-County, Maryland	Maryland	—	Daughter
1940	Mary Elizabeth Warner	14	Davidson-County, Tennessee	Tennessee	—	Daughter
1940	Mary Warner	20	Broome-County, New York	New York	Housekeeper	Daughter
1940	Mary Lee Warner	16	Mason-County, Kentucky	Kentucky	—	Daughter
1940	Mary O. Warner	50	Randolph-County, West Virginia	West Virginia	—	Wife
1910	Mary Warner		Baltimore, Maryland	Maryland	None	Daughter
1940	Mary Jane Warner	11	Tompkins-County, New York	New York	—	Daughter
1940	Mary C Warner	42	Davidson-County, Tennessee	Tennessee	—	Wife
1910	Mary E. Warner		Woodbury, Iowa	Vermont	Proof Reader	Daughter
1940	Mary Ella Warner	16	Madison-County, Kentucky	Kentucky	Housekeeper	Daughter
1920	Mary M Warner		Carroll, Maryland	Maryland	—	Wife
1920	Mary E. Warner		York, Pennsylvania	Pennsylvania	—	Daughter
1910	Mary Warner		Camden, New Jersey	Pennsylvania	—	Wife
1940	Mary Warner	14	Suffolk-County, Massachusetts	Massachusetts	—	Daughter
1940	Mary Lucille Warner	12	Erie-County, New York	New York	—	Daughter

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About Mary Warner US Census Records & Model Tree

We've indexed 7292 free, proprietary US Census records for Mary Warner across 1900–1950, covering 49 states and DC: Alabama, 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 7292 US Census records for Mary Warner, 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 Warner'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 Warner 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 Warner 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.