How many Mary Harding census records do you have?

We have 3441 US Census records for Mary Harding, from 1900 to 1950, across 49 states and DC.

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

Yes. All Mary Harding 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 Harding?

We have Mary Harding records from the 1900 through 1950 US Federal Census, across 49 states and DC. Use the year and state filters to narrow your results.

How do I find Mary Harding 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 Harding?

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 Harding — US Census Records & Model Tree

We found 3441 free census records for Mary Harding across 6 census years (1900–1950), in 49 states and DC and 869 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Harding Census Records by State & County

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Showing of 3441 records for Mary Harding US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary E Harding	23	Marion-County, Indiana	Indiana	Teletype	Head
1930	Mary Harding		Guernsey, Ohio	Ohio	—	Wife
1940	Mary L. Harding	75	Passaic-County, New Jersey	Connecticut	—	Head
1920	Mary Harding		Columbiana, Ohio	England	—	Head
1920	Mary Harding		Marion, Indiana	Indiana	None	Wife
1900	Mary E Harding	55	Middlesex, Massachusetts	Massachusetts	—	Head
1920	Mary A. Harding		Baltimore, Maryland	Maryland	—	Wife
1940	Mary Harding	63	Johnson-County, Iowa	Iowa	Cook	Head
1930	Mary Harding		Los Angeles, California	California	—	Daughter
1930	Mary M. Harding		Monroe, Indiana	Indiana	Teacher	Daughter
1910	Mary Harding		Campbell, Kentucky	Kentucky	—	Daughter
1910	Mary E Harding		Fayette, Pennsylvania	West Virginia	Own Income	Head
1930	Mary Harding		Fayette, Pennsylvania	Pennsylvania	—	Daughter
1900	Mary Harding	4	Cottonwood, Minnesota	Minnesota	—	Daughter
1910	Mary L Harding		Bradley, Arkansas	South Carolina	None	Wife
1910	Mary Harding		Union, New Jersey	New Jersey	—	Wife
1930	Mary Harding		Luzerne, Pennsylvania	Pennsylvania	None	Wife
1930	Mary Harding		Jefferson, Alabama	Alabama	—	Daughter
1930	Mary L. Harding		Quay, New Mexico	Texas	—	Wife
1940	Mary M. Harding	14	Greene-County, Ohio	Ohio	—	Daughter
1930	Mary Harding		Plymouth, Massachusetts	Massachusetts	—	Daughter
1910	Mary F. Harding		Guernsey, Ohio	Ohio	None	Daughter
1900	Mary E. Harding	40	Perry, Indiana	Indiana	—	Wife
1920	Mary Harding		Philadelphia, Pennsylvania	Pennsylvania	—	Daughter
1940	Mary Harding	15	Henry-County, Missouri	Missouri	—	Daughter
1920	Mary Harding		Guernsey, Ohio	Ohio	—	Daughter
1910	Mary Harding		Providence, Rhode Island	Rhode Island	None	Daughter
1930	Mary Harding		Middlesex, Massachusetts	Massachusetts	—	Daughter
1940	Mary Harding	46	Fulton-County, Kentucky	Tennessee	—	Wife
1940	Mary Ab Harding	24	Polk-County, Iowa	Iowa	—	Daughter

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About Mary Harding US Census Records & Model Tree

We've indexed 3441 free, proprietary US Census records for Mary Harding across 1900–1950, covering 49 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, 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 3441 US Census records for Mary Harding, from 1900 to 1950, across 49 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 Harding'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 Harding 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 Harding records from the 1900 through 1950 US Federal Census, across 49 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.