How many Mary Mclaughlin census records do you have?

We have 8556 US Census records for Mary Mclaughlin, from 1900 to 1950, across 48 states, DC, and 1 territory.

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

Yes. All Mary Mclaughlin 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 Mclaughlin?

We have Mary Mclaughlin records from the 1900 through 1950 US Federal Census, across 48 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find Mary Mclaughlin 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 Mclaughlin?

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 Mclaughlin — US Census Records & Model Tree

We found 8556 free census records for Mary Mclaughlin across 6 census years (1900–1950), in 48 states, DC, and 1 territory and 983 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Mclaughlin Census Records by State & County

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Showing of 8556 records for Mary Mclaughlin US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	Mary Mclaughlin		Kane, Illinois	Illinois	—	Daughter
1940	Mary Mclaughlin	22	Suffolk-County, Massachusetts	Massachusetts	Machine Operator	Daughter
1930	Mary E. Mclaughlin		Franklin, Ohio	Ohio	Stenographer	Daughter
1940	Mary B. Mclaughlin	21	Middlesex-County, New Jersey	New Jersey	Stenographer	Daughter
1940	Mary E. Mclaughlin	22	Baltimore-City-County, Maryland	Maryland	Stenographer	Daughter
1930	Mary E Mclaughlin		Middlesex, Massachusetts	Massachusetts	—	Daughter
1940	Mary Mclaughlin	41	Bristol-County, Massachusetts	Massachusetts	Registered Nurse	Daughter
1930	Mary Mclaughlin		Cook, Illinois	Illinois	—	Daughter
1930	Mary M. Mclaughlin		Olmsted, Minnesota	Minnesota	—	Daughter
1910	Mary E Mclaughlin		Philadelphia, Pennsylvania	New York	—	Wife
1930	Mary Mclaughlin		Suffolk, Massachusetts	Ireland	—	Head
1920	Mary Mclaughlin		Story, Iowa	Illinois	None	Wife
1940	Mary Mclaughlin	38	New-Castle-County, Delaware	Delaware	—	Wife
1940	Mary L. Mclaughlin	47	East-Baton-Rouge-County, Louisiana	Louisiana	—	Wife
1930	Mary Mclaughlin		Hudson, New Jersey	Ireland	—	Wife
1930	Mary Mclaughlin		New York, New York	Ireland	—	Head
1940	Mary E. Mclaughlin	47	Delaware-County, Pennsylvania	Delaware	—	Wife
1940	Mary Mclaughlin	46	Bennington-County, Vermont	Vermont	Housework	Wife
1930	Mary Mclaughlin		Suffolk, Massachusetts	Ireland	—	Wife
1940	Mary Mclaughlin	60	Philadelphia-County, Pennsylvania	Ireland	—	Wife
1920	Mary Mclaughlin		Bronx, New York	Ireland	—	Head
1940	Mary Mclaughlin	60	Nassau-County, New York	Ireland	—	Wife
1940	Mary Mclaughlin	53	Philadelphia-County, Pennsylvania	Ireland	—	Head
1930	Mary Mclaughlin		Essex, New Jersey	New Jersey	—	Wife
1940	Mary Mclaughlin	70	Plymouth-County, Massachusetts	Massachusetts	—	Wife
1940	Mary S. Mclaughlin	59	Providence-County, Rhode Island	Rhode Island	Teacher Of Piano	Wife
1930	Mary Mclaughlin		Kings, New York	Ireland	—	Wife
1940	Mary E. Mclaughlin	15	Suffolk-County, Massachusetts	Massachusetts	—	Daughter
1900	Mary Mclaughlin	4	Philadelphia, Pennsylvania	Pennsylvania	—	Daughter
1930	Mary Mclaughlin		Hudson, New Jersey	New Jersey	—	Wife

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About Mary Mclaughlin US Census Records & Model Tree

We've indexed 8556 free, proprietary US Census records for Mary Mclaughlin across 1900–1950, covering 48 states, DC, and 1 territory: Alabama, 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, Puerto Rico, 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 8556 US Census records for Mary Mclaughlin, from 1900 to 1950, across 48 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 Mclaughlin'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 Mclaughlin 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 Mclaughlin records from the 1900 through 1950 US Federal Census, across 48 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.

Other Mclaughlin US Census Records

James Mclaughlin John Mclaughlin Margaret Mclaughlin William Mclaughlin

All Mclaughlin census records →

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