How many Mary Conley census records do you have?

We have 5135 US Census records for Mary Conley, from 1900 to 1950, across 49 states and DC.

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

Yes. All Mary Conley 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 Conley?

We have Mary Conley 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 Conley 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 Conley?

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 Conley — US Census Records & Model Tree

We found 5135 free census records for Mary Conley across 6 census years (1900–1950), in 49 states and DC and 993 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Conley Census Records by State & County

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Showing of 5135 records for Mary Conley US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary E. Conley	42	Providence-County, Rhode Island	Rhode Island	Stenographer	Daughter
1930	Mary E. Conley		Sedgwick, Kansas	Kansas	—	Daughter
1940	Mary Cecilia Conley	22	Marion-County, Indiana	Indiana	Clerical	Daughter
1940	Mary Conley	77	Knott-County, Kentucky	Kentucky	—	Wife
1940	Mary Conley	75	Hillsdale-County, Michigan	Michigan	Housework	Head
1930	Mary Conley		Burke, North Carolina	North Carolina	None	Daughter
1940	Mary M. Conley	41	Giles-County, Virginia	Virginia	—	Wife
1940	Mary L. Conley	11	Giles-County, Virginia	Virginia	—	Daughter
1940	Mary Lee Conley	14	Haywood-County, North Carolina	North Carolina	—	Daughter
1940	Mary A. Conley	46	Carter-County, Kentucky	Kentucky	—	Wife
1940	Mary Alice Conley	13	Cook-County, Illinois	Illinois	—	Daughter
1940	Mary Conley	14	Suffolk-County, Massachusetts	Massachusetts	—	Daughter
1910	Mary Conley		Cook, Illinois	Ireland	—	Wife
1940	Mary Conley	14	Philadelphia-County, Pennsylvania	Pennsylvania	0	Daughter
1910	Mary E Conley		Middlesex, Massachusetts	Ireland	—	Wife
1910	Mary Conley		Suffolk, Massachusetts	Massachusetts	—	Wife
1930	Mary Conley		Webster, Iowa	Illinois	—	Daughter
1920	Mary A. Conley		Allegheny, Pennsylvania	Pennsylvania	None	Daughter
1930	Mary A. Conley		Pike, Kentucky	Kentucky	—	Wife
1920	Mary E. Conley		Sagadahoc, Maine	Maine	School Teacher	Daughter
1940	Mary Conley	42	Suffolk-County, Massachusetts	Massachusetts	—	Wife
1930	Mary Conley		Middlesex, Massachusetts	Massachusetts	—	Daughter
1940	Mary Conley	11	Iowa-County, Wisconsin	Wisconsin	—	Daughter
1940	Mary Conley	28	Pike-County, Kentucky	Kentucky	—	Wife
1940	Mary Conley	21	Cook-County, Illinois	Missouri	Tag Sorter	Daughter
1930	Mary Conley		Suffolk, Massachusetts	Massachusetts	—	Daughter
1940	Mary Conley	33	Rensselaer-County, New York	New York	Stenographer	Daughter
1940	Mary Ann Conley	10	Jefferson-County, Ohio	Ohio	—	Daughter
1940	Mary Conley	17	Cook-County, Illinois	Illinois	—	Daughter
1940	Mary Patricia Conley	12	Cook-County, Illinois	Illinois	—	Daughter

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About Mary Conley US Census Records & Model Tree

We've indexed 5135 free, proprietary US Census records for Mary Conley across 1900–1950, covering 49 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, 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 5135 US Census records for Mary Conley, 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 Conley'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 Conley 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 Conley 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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