How many Mary Daley census records do you have?

We have 4608 US Census records for Mary Daley, from 1900 to 1950, across 48 states and DC.

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

Yes. All Mary Daley 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 Daley?

We have Mary Daley 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 Daley 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 Daley?

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 Daley — US Census Records & Model Tree

We found 4608 free census records for Mary Daley across 6 census years (1900–1950), in 48 states and DC and 613 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

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Showing of 4608 records for Mary Daley US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	Mary A. Daley		Hennepin, Minnesota	Minnesota	—	Daughter
1940	Mary A. Daley	37	Middlesex-County, Massachusetts	New Hampshire	Clerk	Daughter
1920	Mary Daley		Hudson, New Jersey	New Jersey	—	Daughter
1930	Mary Daley		Essex, New Jersey	New Jersey	—	Daughter
1940	Mary X Daley	73	Providence-County, Rhode Island	Scotland	—	Head
1920	Mary Daley		Northumberland, Pennsylvania	Pennsylvania	—	Head
1940	Mary Daley	78	Cook-County, Illinois	Ireland	—	Wife
1910	Mary Daley		Middlesex, New Jersey	New Jersey	Own Income	Head
1930	Mary F. Daley		Bristol, Massachusetts	Rhode Island	—	Wife
1940	Mary Daley	14	Scott-County, Virginia	Virginia	—	Daughter
1930	Mary Daley		Allen, Ohio	Ohio	—	Daughter
1910	Mary A Daley		Rockingham, New Hampshire	New Hampshire	None	Daughter
1930	Mary Daley		Philadelphia, Pennsylvania	Ireland	—	Wife
1940	Mary Daley	43	Worcester-County, Massachusetts	Poland	At Home	Wife
1940	Mary Daley	42	Allen-County, Ohio	Italy	—	Wife
1940	Mary L. Daley	17	Howard-County, Iowa	Iowa	—	Daughter
1930	Mary A. Daley		Presidio, Texas	Texas	—	Daughter
1930	Mary S. Daley		Presidio, Texas	Texas	—	Daughter
1940	Mary H. Daley	10	Rockingham-County, North Carolina	North Carolina	—	Daughter
1900	Mary T Daley	14	Plymouth, Massachusetts	Massachusetts	At School	Daughter
1930	Mary T. Daley		Suffolk, Massachusetts	Massachusetts	—	Daughter
1930	Mary T. Daley		Suffolk, Massachusetts	Iowa	—	Wife
1930	Mary Daley		Lorain, Ohio	Ohio	Saleslady	Daughter
1930	Mary M. Daley		Essex, Massachusetts	Massachusetts	—	Daughter
1930	Mary A Daley		Cook, Illinois	Illinois	—	Head
1940	Mary Daley	42	Philadelphia-County, Pennsylvania	Northern Ireland	—	Wife
1930	Mary Daley		Labette, Kansas	Oklahoma	None	Daughter
1900	Mary A. Daley	46	Bristol, Massachusetts	Rhode Island	—	Wife
1940	Mary Daley	41	Cook-County, Illinois	Illinois	—	Wife
1940	Mary J. Daley	28	Suffolk-County, Massachusetts	Massachusetts	—	Wife

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About Mary Daley US Census Records & Model Tree

We've indexed 4608 free, proprietary US Census records for Mary Daley 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 4608 US Census records for Mary Daley, 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 Daley'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 Daley 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 Daley 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.

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