How many Mary Bird census records do you have?

We have 4106 US Census records for Mary Bird, from 1900 to 1950, across 48 states and DC.

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

Yes. All Mary Bird 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 Bird?

We have Mary Bird records from the 1900 through 1950 US Federal Census, across 48 states and DC. Use the year and state filters to narrow your results.

How do I find Mary Bird 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 Bird?

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 Bird — US Census Records & Model Tree

We found 4106 free census records for Mary Bird across 6 census years (1900–1950), in 48 states and DC and 1211 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Bird Census Records by State & County

Records per state:

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Showing of 4106 records for Mary Bird US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary A. Bird	55	Multnomah-County, Oregon	Alabama	—	Wife
1940	Mary Bird	56	Wayne-County, Michigan	Illinois	—	Wife
1920	Mary Bird		Calhoun, Michigan	Michigan	None	Wife
1940	Mary M Bird	69	Mercer-County, West Virginia	Virginia	—	Wife
1940	Mary A Bird	19	Whitfield-County, Georgia	Georgia	—	Son
1910	Mary E. Bird		Benton, Missouri	Tennessee	—	Wife
1940	Mary A Bird	28	Multnomah-County, Oregon	Colorado	—	Wife
1910	Mary M Bird		Fremont, Idaho	Idaho	—	Daughter
1910	Mary F Bird		Barton, Kansas	Kansas	None	Daughter
1930	Mary Bird		Bronx, New York	Canada	—	Wife
1930	Mary Bird		Jefferson, Alabama	Alabama	—	Daughter
1940	Mary Bird	39	Pickens-County, Alabama	Alabama	—	Wife
1910	Mary E. Bird		Berkeley, West Virginia	West Virginia	—	Wife
1910	Mary A. Bird		Uinta, Wyoming	Wyoming	—	Daughter
1910	Mary Bird		Attala, Mississippi	Mississippi	—	Daughter
1920	Mary Bird		Columbia, Georgia	Georgia	—	Wife
1940	Mary Bird	28	Tooele-County, Utah	Utah	—	Wife
1910	Mary Bird		Bradford, Florida	Florida	Laborer	Wife
1930	Mary J Bird		Cache, Utah	Utah	—	Wife
1910	Mary E Bird		Greene, Ohio	Ohio	—	Daughter
1930	Mary Bird		Calcasieu, Louisiana	Louisiana	—	Daughter
1940	Mary Ellen Bird	12	Orleans-County, Louisiana	Louisiana	—	Daughter
1910	Mary B. Bird		Essex, New Jersey	New Jersey	—	Daughter
1940	Mary Rose Bird	11	Lake-County, Montana	Montana	—	Daughter
1910	Mary E Bird		Montgomery, Georgia	North Carolina	House	Wife
1940	Mary J Bird	43	Sangamon-County, Illinois	England	Housewife	Wife
1940	Mary Bird	41	Lonoke-County, Arkansas	Czechoslovakia	—	Wife
1930	Mary Bird		Suffolk, Massachusetts	Irish Free State	Housewife	Wife
1910	Mary Bird		Kankakee, Illinois	Ireland	None	Wife
1940	Mary Bird	51	Seminole-County, Oklahoma	Arkansas	—	Wife

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About Mary Bird US Census Records & Model Tree

We've indexed 4106 free, proprietary US Census records for Mary Bird across 1900–1950, covering 48 states and DC: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, 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 4106 US Census records for Mary Bird, from 1900 to 1950, across 48 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 Bird'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 Bird 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 Bird records from the 1900 through 1950 US Federal Census, across 48 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.