How many Helen Mason census records do you have?

We have 3110 US Census records for Helen Mason, from 1900 to 1950, across 50 states, DC, and 1 territory.

What's in a Helen Mason census record?

You'll see Helen'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 Helen Mason'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 Helen Mason census records free?

Yes. All Helen Mason 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 Helen Mason?

We have Helen Mason records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find Helen Mason 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 Helen Mason?

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.

Helen Mason — US Census Records & Model Tree

We found 3110 free census records for Helen Mason across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 887 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Helen Mason Census Records by State & County

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Showing of 3110 records for Helen Mason US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Helen Mason	27	Davidson-County, Tennessee	Tennessee	None	Daughter
1930	Helen E. Mason		Sangamon, Illinois	Illinois	—	Daughter
1940	Helen Mason	19	Montgomery-County, Pennsylvania	Pennsylvania	—	Daughter
1940	Helen Mason	28	Bronx-County, New York	New York	Clerk	Daughter
1930	Helen Louise Mason		Cuyahoga, Ohio	Ohio	Stenographer	Daughter
1940	Helen Mason	29	Kings-County, New York	New York	—	Daughter
1940	Helen Mason	30	Middlesex-County, Massachusetts	Massachusetts	—	Wife
1930	Helen E Mason		Cook, Illinois	Illinois	—	Daughter
1930	Helen R Mason		Philadelphia, Pennsylvania	Pennsylvania	—	Daughter
1940	Helen Mason	37	Cook-County, Illinois	Illinois	None	Wife
1940	Helen Mason	41	Tama-County, Iowa	Iowa	—	Wife
1940	Helen Kelly Mason	13	Campbell-County, Virginia	Virginia	—	Daughter
1940	Helen G. Mason	13	Brunswick-County, Virginia	Virginia	—	Daughter
1920	Helen Mason		Richardson, Nebraska	Nebraska	—	Daughter
1940	Helen Mason	24	Adams-County, Illinois	Kansas	Maid	Daughter
1930	Helen Mason		Colquitt, Georgia	Tennessee	None	Daughter
1940	Helen Mason	10	Box-Elder-County, Utah	Utah	—	Daughter
1940	Helen Mason	16	Scioto-County, Ohio	Ohio	—	Daughter
1940	Helen Mason	11	Milwaukee-County, Wisconsin	Wisconsin	—	Daughter
1940	Helen Mason	33	Hampden-County, Massachusetts	Connecticut	—	Wife
1930	Helen Mason		Baltimore, Maryland	Maryland	—	Daughter
1930	Helen A. Mason		Monroe, New York	New York	None	Daughter
1930	Helen Mason		Sac, Iowa	Iowa	—	Daughter
1930	Helen C Mason		Brown, Wisconsin	Wisconsin	—	Wife
1940	Helen Mason	12	Franklin-County, Virginia	Virginia	—	Daughter
1930	Helen Mason		Montgomery, Ohio	Ohio	—	Daughter
1930	Helen E. Mason		Erie, New York	New York	—	Daughter
1940	Helen S Mason	43	Bowman-County, North Dakota	Wisconsin	—	Wife
1940	Helen M Mason	12	Chesterfield-County, Virginia	Virginia	—	Daughter
1940	Helen J. Mason	11	Marquette-County, Michigan	Michigan	—	Daughter

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About Helen Mason US Census Records & Model Tree

We've indexed 3110 free, proprietary US Census records for Helen Mason across 1900–1950, covering 50 states, DC, and 1 territory: 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, 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 Helen 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 3110 US Census records for Helen Mason, from 1900 to 1950, across 50 states, DC, and 1 territory.
: You'll see Helen'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 Helen Mason'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 Helen Mason 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 Helen Mason records from the 1900 through 1950 US Federal Census, across 50 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.