How many Mary Bailey census records do you have?

We have 18908 US Census records for Mary Bailey, from 1900 to 1950, across 50 states, DC, and 1 territory.

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

Yes. All Mary Bailey 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 Bailey?

We have Mary Bailey records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find Mary Bailey 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 Bailey?

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 Bailey — US Census Records & Model Tree

We found 18908 free census records for Mary Bailey across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 2205 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Bailey Census Records by State & County

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Showing of 18908 records for Mary Bailey US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1910	Mary Bailey		Baltimore, Maryland	Maryland	—	Daughter
1940	Mary E. Bailey	29	Essex-County, Massachusetts	Massachusetts	Bookkeeper	Daughter
1920	Mary A Bailey		Grafton, New Hampshire	New Hampshire	—	Wife
1930	Mary Bailey		Denver, Colorado	Colorado	Checking Clerk	Daughter
1940	Mary A Bailey	28	Hardin-County, Tennessee	Tennessee	Cook	Wife
1940	Mary Bailey	24	Lowndes-County, Mississippi	Mississippi	Laundress	Daughter
1940	Mary E. Bailey	22	Cuyahoga-County, Ohio	Ohio	Packer	Daughter
1930	Mary Bailey		Talbot, Maryland	Maryland	Laundress	Daughter
1930	Mary Bailey		Fulton, Georgia	Georgia	Maid	Daughter
1940	Mary Bailey	39	Falls-County, Texas	Texas	Maid	Daughter
1940	Mary Bailey	27	Stephens-County, Georgia	Georgia	—	Daughter
1930	Mary B. Bailey		Grafton, New Hampshire	New Hampshire	—	Wife
1940	Mary Bailey	49	Le-Flore-County, Oklahoma	Arkansas	—	Wife
1940	Mary E Bailey	56	Pike-County, Ohio	Ohio	—	Wife
1910	Mary A. Bailey		Grafton, New Hampshire	New Hampshire	—	Wife
1940	Mary Bailey	42	Washington-County, Pennsylvania	Austria	—	Wife
1920	Mary Bailey		Park, Montana	Scotland	—	Wife
1930	Mary Bailey		Lake, Oregon	California	None	Wife
1940	Mary E. Bailey	61	Crawford-County, Illinois	Illinois	—	Wife
1940	Mary Bailey	42	Wheeler-County, Oregon	Oregon	—	Wife
1940	Mary Bailey	55	Baltimore-County, Maryland	Maryland	—	Wife
1940	Mary E. Bailey	56	Washington-County, Rhode Island	England	—	Wife
1940	Mary Bailey	63	Providence-County, Rhode Island	Rhode Island	—	Wife
1940	Mary Bailey	59	Stephenson-County, Illinois	Illinois	—	Head
1940	Mary M Bailey	55	Camden-County, New Jersey	New Jersey	—	Wife
1940	Mary E. Bailey	59	Franklin-County, Ohio	Minnesota	—	Head
1940	Mary E Bailey	15	Trinity-County, California	California	—	Daughter
1930	Mary Bailey		Montgomery, Pennsylvania	Pennsylvania	—	Wife
1930	Mary Bailey		Montgomery, Pennsylvania	Pennsylvania	—	Daughter
1940	Mary Bailey	13	Chickasaw-County, Mississippi	Mississippi	—	Daughter

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About Mary Bailey US Census Records & Model Tree

We've indexed 18908 free, proprietary US Census records for Mary Bailey across 1900–1950, covering 50 states, DC, and 1 territory: 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, 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 18908 US Census records for Mary Bailey, from 1900 to 1950, across 50 states, DC, and 1 territory.
: 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 Bailey'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 Bailey 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 Bailey records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. 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.

Other Bailey US Census Records

Alice Bailey Anna Bailey Annie Bailey Arthur Bailey Charles Bailey Dorothy Bailey Edward Bailey Elizabeth Bailey Emma Bailey Frank Bailey Fred Bailey George Bailey Harry Bailey Helen Bailey Henry Bailey James Bailey John Bailey Joseph Bailey Margaret Bailey Martha Bailey Richard Bailey Robert Bailey Ruth Bailey Sarah Bailey Thomas Bailey Walter Bailey William Bailey Willie Bailey

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