How many Mary Muller census records do you have?

We have 3442 US Census records for Mary Muller, from 1900 to 1950, across 49 states, DC, and 1 territory.

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

Yes. All Mary Muller 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 Muller?

We have Mary Muller records from the 1900 through 1950 US Federal Census, across 49 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find Mary Muller 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 Muller?

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 Muller — US Census Records & Model Tree

We found 3442 free census records for Mary Muller across 6 census years (1900–1950), in 49 states, DC, and 1 territory and 606 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Muller Census Records by State & County

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Showing of 3442 records for Mary Muller US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Mary Muller		Kings, New York	Ireland	—	Wife
1910	Mary A Muller		Kings, New York	England	—	Wife
1940	Mary Muller	41	Kings-County, New York	Venezuela	—	Wife
1940	Mary Muller	50	Kings-County, New York	Austria	—	Wife
1930	Mary Muller		Bronx, New York	Switzerland	—	Wife
1940	Mary Muller	52	Maricopa-County, Arizona	Ireland	File Clerk	Head
1910	Mary Muller		Sumter, South Carolina	South Carolina	Farm Laborer	Wife
1930	Mary L. Muller		Douglas, Minnesota	Minnesota	None	Daughter
1910	Mary Muller		New York, New York	Hungary	—	Wife
1940	Mary Jane Muller	10	Kossuth-County, Iowa	Iowa	—	Daughter
1900	Mary Muller	25	Orleans, Louisiana	Louisiana	—	Wife
1930	Mary Muller		Passaic, New Jersey	Switzerland	—	Wife
1940	Mary Muller	56	Cook-County, Illinois	Poland	—	Head
1940	Mary Muller	59	Philadelphia-County, Pennsylvania	Ireland	—	Wife
1900	Mary Müller	42	Dane, Wisconsin	Minnesota	—	Wife
1930	Mary A Muller		Polk, Oregon	Oregon	—	Daughter
1940	Mary Muller	15	Middlesex-County, Massachusetts	Massachusetts	—	Daughter
1940	Mary M. Muller	21	Baltimore-County, Maryland	Maryland	Sales Clerk	Daughter
1930	Mary J. Muller		Los Angeles, California	California	—	Daughter
1930	Mary Muller		Norfolk, Massachusetts	Rhode Island	—	Wife
1930	Mary Muller		New York, New York	Poland	—	Wife
1940	Mary Muller	14	San-Francisco-County, California	California	—	Daughter
1940	Mary C. Muller	22	Queens-County, New York	New York	File Clerk	Daughter
1930	Mary Ann Muller		Colfax, Nebraska	Nebraska	None	Daughter
1930	Mary Muller		Solano, California	Italy	None	Wife
1940	Mary Muller	61	St.-Louis-City-County, Missouri	Austria	—	Wife
1930	Mary Muller		Bronx, New York	Austria	—	Wife
1920	Mary Muller		Escambia, Florida	Florida	None	Wife
1940	Mary Muller	49	Orleans-County, Louisiana	Louisiana	—	Wife
1930	Mary Muller		Hudson, New Jersey	Hungary	—	Wife

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About Mary Muller US Census Records & Model Tree

We've indexed 3442 free, proprietary US Census records for Mary Muller across 1900–1950, covering 49 states, DC, and 1 territory: 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, 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 3442 US Census records for Mary Muller, from 1900 to 1950, across 49 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 Muller'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 Muller 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 Muller records from the 1900 through 1950 US Federal Census, across 49 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.

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