How many Mary Porter census records do you have?

We have 12864 US Census records for Mary Porter, from 1900 to 1950, across 50 states, DC, and 2 territories.

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

Yes. All Mary Porter 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 Porter?

We have Mary Porter records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 territories. Use the year and state filters to narrow your results.

How do I find Mary Porter 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 Porter?

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 Porter — US Census Records & Model Tree

We found 12864 free census records for Mary Porter across 6 census years (1900–1950), in 50 states, DC, and 2 territories and 1984 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Porter Census Records by State & County

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Showing of 12864 records for Mary Porter US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Mary Porter		Orleans, Louisiana	Louisiana	—	Daughter
1940	Mary Porter	31	Cook-County, Illinois	Illinois	—	Wife
1930	Mary E Porter		Adair, Iowa	Iowa	—	Son
1940	Mary Porter	32	Hamilton-County, Ohio	Ohio	Day Worker	Daughter
1940	Mary J. Porter	60	Allegheny-County, Pennsylvania	Wales	—	Wife
1920	Mary Porter		Orangeburg, South Carolina	South Carolina	—	Wife
1920	Mary F Porter		Clackamas, Oregon	Oregon	—	Wife
1920	Mary W. Porter		Suffolk, Massachusetts	Massachusetts	—	Wife
1940	Mary E. Porter	78	Cambria-County, Pennsylvania	Maryland	—	Head
1940	Mary Porter	64	Faulkner-County, Arkansas	Virginia	—	Wife
1930	Mary H Porter		King, Washington	Michigan	None	Head
1920	Mary Porter		Henrico, Virginia	Virginia	—	Wife
1940	Mary A. Porter	67	Ashtabula-County, Ohio	Ohio	—	Wife
1940	Mary Porter	56	Orleans-County, Louisiana	Louisiana	—	Wife
1940	Mary E. Porter	82	Adams-County, Illinois	Illinois	—	Head
1940	Mary Porter	65	Jackson-County, Florida	Florida	Farmer	Head
1940	Mary E Porter	18	Marion-County, Georgia	Georgia	Farm Laborer	Daughter
1920	Mary Lee Porter		Hempstead, Arkansas	Arkansas	—	Daughter
1940	Mary Porter	23	Union-County, South Carolina	South Carolina	Laborer	Daughter
1910	Mary A. Porter		Floyd, Kentucky	Kentucky	—	Daughter
1940	Mary Porter	39	Baltimore-County, Maryland	Virginia	—	Wife
1920	Mary E. Porter		Albemarle, Virginia	Virginia	—	Daughter
1910	Mary E. Porter		Pickens, South Carolina	South Carolina	—	Wife
1940	Mary Porter	51	Monroe-County, New York	Pennsylvania	0	Head
1910	Mary Porter		Dallas, Alabama	Alabama	Farm Laborer	Wife
1930	Mary Porter		Fairfield, South Carolina	South Carolina	—	Daughter
1930	Mary Porter		Monroe, New York	Pennsylvania	Student	Daughter
1940	Mary L. Porter	11	Crittenden-County, Kentucky	Kentucky	—	Daughter
1930	Mary E. Porter		Robertson, Tennessee	Tennessee	—	Daughter
1940	Mary E. Porter	15	Lauderdale-County, Mississippi	Mississippi	—	Daughter

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About Mary Porter US Census Records & Model Tree

We've indexed 12864 free, proprietary US Census records for Mary Porter across 1900–1950, covering 50 states, DC, and 2 territories: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, 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 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 12864 US Census records for Mary Porter, from 1900 to 1950, across 50 states, DC, and 2 territories.
: 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 Porter'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 Porter 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 Porter records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 territories. 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.