How many Mary Mclean census records do you have?

We have 7313 US Census records for Mary Mclean, from 1900 to 1950, across 50 states and DC.

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

Yes. All Mary Mclean 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 Mclean?

We have Mary Mclean records from the 1900 through 1950 US Federal Census, across 50 states and DC. Use the year and state filters to narrow your results.

How do I find Mary Mclean 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 Mclean?

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 Mclean — US Census Records & Model Tree

We found 7313 free census records for Mary Mclean across 6 census years (1900–1950), in 50 states and DC and 1292 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Mclean Census Records by State & County

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Showing of 7313 records for Mary Mclean US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	Mary M Mclean		Barbour, Alabama	alabama	—	Daughter
1930	Mary A. Mclean		Robeson, North Carolina	North Carolina	Farm Laborer	Daughter
1930	Mary E. Mclean		Robeson, North Carolina	North Carolina	Laborer	Daughter
1930	Mary Mclean		Wayne, Michigan	Michigan	—	Daughter
1940	Mary A Mclean	31	Middlesex-County, Massachusetts	Massachusetts	—	Wife
1930	Mary H Mclean		Providence, Rhode Island	Rhode Island	—	Daughter
1910	Mary Mclean		New York, New York	Ireland	Janitress	Wife
1930	Mary N. Mclean		Wayne, Michigan	Scotland	None	Wife
1930	Mary B. Mclean		Robeson, North Carolina	South Carolina	None	Head
1920	Mary Mclean		Philadelphia, Pennsylvania	Ireland	—	Wife
1940	Mary Mclean	56	Madison-County, Illinois	Illinois	—	Head
1940	Mary Mclean	68	Worcester-County, Massachusetts	Scotland	Housework	Head
1940	Mary Mclean	82	Cloud-County, Kansas	Vermont	Retired	Head
1940	Mary Lizzie Mclean	28	Dillon-County, South Carolina	South Carolina	Laborer	Daughter
1930	Mary Lee Mclean		Marengo, Alabama	Alabama	—	Daughter
1930	Mary Mclean		Marlboro, South Carolina	South Carolina	—	Daughter
1930	Mary A. Mclean		Guilford, North Carolina	North Carolina	Looper	Daughter
1940	Mary Mclean	11	Kings-County, New York	New York	—	Daughter
1930	Mary Mclean		Cumberland, North Carolina	North Carolina	—	Daughter
1930	Mary Mclean		Middlesex, Massachusetts	Massachusetts	None	Daughter
1930	Mary Mclean		Middlesex, Massachusetts	Massachusetts	—	Daughter
1930	Mary M. Mclean		Harnett, North Carolina	North Carolina	—	Daughter
1940	Mary A. Mclean	47	Leflore-County, Mississippi	Mississippi	—	Wife
1940	Mary Mclean	33	Scotland-County, North Carolina	North Carolina	—	Wife
1910	Mary J Mclean		Essex, New Jersey	England	—	Wife
1940	Mary I. Mclean	10	Los-Angeles-County, California	California	—	Daughter
1940	Mary Mclean	43	Montgomery-County, Mississippi	South Carolina	Minister	Wife
1920	Mary Lou Mclean		Barbour, Alabama	Alabama	None	Daughter
1940	Mary Jane Mclean	12	Oakland-County, Michigan	Michigan	—	Daughter
1920	Mary Mclean		Harnett, North Carolina	North Carolina	—	Daughter

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About Mary Mclean US Census Records & Model Tree

We've indexed 7313 free, proprietary US Census records for Mary Mclean across 1900–1950, covering 50 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, 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 7313 US Census records for Mary Mclean, from 1900 to 1950, across 50 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 Mclean'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 Mclean 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 Mclean records from the 1900 through 1950 US Federal Census, across 50 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.

Other Mclean US Census Records

George Mclean James Mclean John Mclean Margaret Mclean Robert Mclean William Mclean

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