How many Mary Preston census records do you have?

We have 3742 US Census records for Mary Preston, from 1900 to 1950, across 48 states, DC, and 1 territory.

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

Yes. All Mary Preston 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 Preston?

We have Mary Preston 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 Preston 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 Preston?

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 Preston — US Census Records & Model Tree

We found 3742 free census records for Mary Preston across 6 census years (1900–1950), in 48 states, DC, and 1 territory and 978 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Preston Census Records by State & County

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Showing of 3742 records for Mary Preston US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary Frances Preston	20	Boyle-County, Kentucky	Kentucky	Sewing	Daughter
1930	Mary Preston		Orange, Florida	Florida	Stenographer	Daughter
1930	Mary Preston		San Francisco, California	California	—	Daughter
1940	Mary Preston	38	Bay-County, Michigan	Michigan	—	Wife
1930	Mary J. Preston		Lamar, Texas	Texas	—	Wife
1920	Mary A. Preston		Eau Claire, Wisconsin	Wisconsin	—	Daughter
1940	Mary Louise Preston	12	Lamar-County, Texas	Texas	—	Daughter
1940	Mary Preston	16	Monroe-County, New York	New York	—	Daughter
1940	Mary T Preston	45	Henry-County, Virginia	Virginia	—	Wife
1930	Mary R Preston		Muscogee, Georgia	Georgia	None	Daughter
1930	Mary Preston		Essex, New Jersey	Ireland	None	Wife
1940	Mary E. Preston	13	Johnson-County, Kentucky	Kentucky	—	Daughter
1930	Mary L. Preston		Los Angeles, California	California	None	Daughter
1940	Mary Lou Preston	12	San-Diego-County, California	California	—	Daughter
1930	Mary Preston		Luzerne, Pennsylvania	Pennsylvania	—	Daughter
1930	Mary Preston		Philadelphia, Pennsylvania	Pennsylvania	Mill Worker	Daughter
1930	Mary E. Preston		Bradley, Arkansas	Arkansas	—	Daughter
1910	Mary A Preston		Jasper, Georgia	Georgia	None	Wife
1940	Mary E. Preston	33	Johnson-County, Kentucky	Kentucky	—	Wife
1910	Mary Preston		Ramsey, Minnesota	Minnesota	—	Wife
1940	Mary A. Preston	15	Berrien-County, Michigan	Michigan	—	Daughter
1940	Mary L. Preston	12	Davidson-County, Tennessee	Tennessee	—	Daughter
1940	Mary Lizzie Preston	30	Bibb-County, Georgia	Georgia	—	Daughter
1930	Mary Preston		Jessamine, Kentucky	Kentucky	—	Daughter
1940	Mary Belle Preston	19	King-County, Washington	WASHINGTON	—	Daughter
1930	Mary J. Preston		Erie, New York	New York	Telephone Oper.	Wife
1930	Mary Preston		Kings, New York	New York	None	Daughter
1930	Mary Preston		None, District of Columbia	District of Columbia	—	Wife
1940	Mary Preston	17	Hillsborough-County, Florida	Florida	—	Daughter
1910	Mary J Preston		Tioga, Pennsylvania	Pennsylvania	—	Daughter

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About Mary Preston US Census Records & Model Tree

We've indexed 3742 free, proprietary US Census records for Mary Preston across 1900–1950, covering 48 states, DC, and 1 territory: Alabama, 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, 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 3742 US Census records for Mary Preston, 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 Preston'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 Preston 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 Preston 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.