How many Mary Mueller census records do you have?

We have 4789 US Census records for Mary Mueller, from 1900 to 1950, across 49 states and DC.

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

Yes. All Mary Mueller 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 Mueller?

We have Mary Mueller 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 Mueller 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 Mueller?

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 Mueller — US Census Records & Model Tree

We found 4789 free census records for Mary Mueller across 6 census years (1900–1950), in 49 states and DC and 649 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Mueller Census Records by State & County

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Showing of 4789 records for Mary Mueller US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary L. Mueller	43	Cavalier-County, North Dakota	North Dakota	—	Wife
1920	Mary Mueller		Polk, Nebraska	Switzerland	—	Wife
1920	Mary Mueller		Kings, New York	Ireland	—	Wife
1940	Mary Mueller	55	Solano-County, California	Italy	—	Wife
1900	Mary M. Mueller	14	St Louis, Minnesota	North Dakota	At School	Daughter
1930	Mary L. Mueller		Allegheny, Pennsylvania	Pennsylvania	—	Daughter
1930	Mary M. Mueller		Stearns, Minnesota	Bavaria	Housework	Wife
1940	Mary Mueller	50	Allegheny-County, Pennsylvania	Lithuania	—	Wife
1910	Mary Mueller		Dane, Wisconsin	Minnesota	Janitor	Wife
1930	Mary E Mueller		Santa Barbara, California	California	—	Daughter
1930	Mary Mueller		St Louis, Missouri	Austria	—	Wife
1900	Mary Mueller	50	Bergen, New Jersey	Denmark	—	Wife
1940	Mary Lou Mueller	13	Milwaukee-County, Wisconsin	Wisconsin	—	Daughter
1940	Mary Mueller	31	Cook-County, Illinois	Hungary	—	Wife
1920	Mary Mueller		Falls, Texas	Texas	Laborer	Daughter
1940	Mary C. Mueller	39	Cook-County, Illinois	Irish Free State	—	Wife
1940	Mary A. Mueller	52	Dixon-County, Nebraska	Nebraska	—	Wife
1940	Mary Rose Mueller	11	St.-Louis-City-County, Missouri	Missouri	—	Daughter
1940	Mary Mueller	38	Hudson-County, New Jersey	Hungary	—	Wife
1940	Mary H. Mueller	33	Salt-Lake-County, Utah	England	—	Wife
1940	Mary Anne Mueller	12	Waukesha-County, Wisconsin	Wisconsin	—	Daughter
1940	Mary Lou Mueller	13	Putnam-County, Ohio	Ohio	—	Daughter
1940	Mary Lou Mueller	14	Saginaw-County, Michigan	Michigan	—	Daughter
1930	Mary M Mueller		Scott, Iowa	Iowa	Clerk	Daughter
1940	Mary Mueller	37	Essex-County, Massachusetts	Scotland	Weaver	Wife
1940	Mary Mueller	36	St.-Louis-City-County, Missouri	Hungary	—	Wife
1940	Mary Mueller	42	Boone-County, Nebraska	Nebraska	—	Wife
1930	Mary L. Mueller		Wayne, Michigan	Maine	—	Wife
1940	Mary Lou Mueller	10	Van-Wert-County, Ohio	Ohio	—	Daughter
1940	Mary Mueller	58	Platte-County, Nebraska	Nebraska	Manager	Head

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About Mary Mueller US Census Records & Model Tree

We've indexed 4789 free, proprietary US Census records for Mary Mueller across 1900–1950, covering 49 states and DC: 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, 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 4789 US Census records for Mary Mueller, 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 Mueller'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 Mueller 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 Mueller 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.

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