How many Mary Mchugh census records do you have?

We have 4104 US Census records for Mary Mchugh, from 1900 to 1950, across 48 states and DC.

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

Yes. All Mary Mchugh 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 Mchugh?

We have Mary Mchugh 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 Mchugh 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 Mchugh?

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 Mchugh — US Census Records & Model Tree

We found 4104 free census records for Mary Mchugh across 6 census years (1900–1950), in 48 states and DC and 397 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Mchugh Census Records by State & County

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Showing of 4104 records for Mary Mchugh US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary J. Mchugh	39	Jefferson-County, Kentucky	Kentucky	Night Chief Operator	Daughter
1930	Mary Mchugh		Kings, New York	Ireland	—	Wife
1940	Mary Mchugh	55	Kings-County, New York	Ireland	—	Head
1920	Mary Mchugh		Westchester, New York	Ireland	—	Wife
1940	Mary Mchugh	52	San-Francisco-County, California	Ireland	—	Wife
1940	Mary Mchugh	48	Kings-County, New York	Ireland	—	Head
1940	Mary Mchugh	83	St.-Charles-County, Missouri	Missouri	—	Head
1940	Mary Mchugh	70	Cook-County, Illinois	Ireland	—	Wife
1940	Mary A. Mchugh	80	Hennepin-County, Minnesota	New York	—	Wife
1940	Mary C. Mchugh	64	Essex-County, Massachusetts	Maine	Operator	Head
1930	Mary Mchugh		Hudson, New Jersey	New Jersey	—	Daughter
1910	Mary Mchugh		Luzerne, Pennsylvania	Pennsylvania	—	Wife
1910	Mary Mchugh		Delaware, Pennsylvania	Ireland	—	Wife
1910	Mary Mchugh		Northumberland, Pennsylvania	Ireland	—	Wife
1930	Mary M. Mchugh		Mahoning, Ohio	Ohio	Salesman	Daughter
1910	Mary Mchugh		Stanislaus, California	California	—	Wife
1940	Mary E. Mchugh	41	Bronx-County, New York	Irish Free State	None	Wife
1940	Mary Ellen Mchugh	10	Harrison-County, Iowa	Iowa	—	Daughter
1930	Mary Mchugh		New York, New York	New York	—	Daughter
1920	Mary Mchugh		Hudson, New Jersey	Ireland	None	Wife
1920	Mary Mchugh		Middlesex, Massachusetts	Ireland	—	Wife
1930	Mary Mchugh		Luzerne, Pennsylvania	Pennsylvania	—	Daughter
1940	Mary Mchugh	35	Kings-County, New York	New York	—	Wife
1910	Mary Mchugh		Camden, New Jersey	New Jersey	—	Daughter
1940	Mary E. Mchugh	17	Middlesex-County, Massachusetts	Massachusetts	—	Daughter
1940	Mary Mchugh	14	Will-County, Illinois	Illinois	—	Daughter
1930	Mary L Mchugh		Hamilton, Ohio	Ohio	—	Daughter
1940	Mary A. Mchugh	14	Suffolk-County, Massachusetts	Massachusetts	—	Daughter
1940	Mary Mchugh	39	Cook-County, Illinois	Irish Free State	—	Wife
1910	Mary E Mchugh		Camden, New Jersey	Ireland	—	Wife

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About Mary Mchugh US Census Records & Model Tree

We've indexed 4104 free, proprietary US Census records for Mary Mchugh across 1900–1950, covering 48 states and DC: 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, 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 4104 US Census records for Mary Mchugh, 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 Mchugh'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 Mchugh 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 Mchugh 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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