How many Mary Orr census records do you have?

We have 3166 US Census records for Mary Orr, from 1900 to 1950, across 50 states and DC.

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

Yes. All Mary Orr 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 Orr?

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

How do I find Mary Orr 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 Orr?

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 Orr — US Census Records & Model Tree

We found 3166 free census records for Mary Orr across 6 census years (1900–1950), in 50 states and DC and 891 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Orr Census Records by State & County

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Showing of 3166 records for Mary Orr US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Mary Orr		Mecklenburg, North Carolina	North Carolina	Checking Dept	Daughter
1910	Mary H Orr		Allegheny, Pennsylvania	Pennsylvania	Teacher	Daughter
1920	Mary Orr		Wayne, Illinois	Illinois	None	Daughter
1930	Mary Orr		Dallas, Texas	S. Carolina	—	Wife
1940	Mary E Orr	35	Grayson-County, Texas	Texas	—	Wife
1930	Mary L. Orr		Gwinnett, Georgia	Georgia	—	Wife
1900	Mary A Orr	60	Mifflin, Pennsylvania	Pennsylvania	—	Head
1940	Mary Orr	18	Marion-County, Ohio	Ohio	—	Daughter
1910	Mary Orr		Morgan, Alabama	Alabama	—	Daughter
1930	Mary E Orr		Delaware, Iowa	Iowa	—	Daughter
1940	Mary Orr	38	Coweta-County, Georgia	Georgia	House Keeper	Wife
1910	Mary E. Orr		Licking, Ohio	Ohio	Engineer	Daughter
1910	Mary L Orr		Rockingham, North Carolina	North Carolina	None	Wife
1940	Mary Orr	12	Graham-County, North Carolina	North Carolina	Laborer	Daughter
1930	Mary Orr		Preston, West Virginia	West Virginia	—	Daughter
1910	Mary Orr		Chickasaw, Mississippi	Mississippi	Farm Laborer	Wife
1940	Mary H. Orr	45	Wyandotte-County, Kansas	Missouri	—	Wife
1930	Mary E. Orr		Wilson, Kansas	Montana	—	Daughter
1940	Mary Orr	45	Cook-County, Illinois	Illinois	—	Wife
1940	Mary E. Orr	33	Cobb-County, Georgia	Alabama	—	Wife
1940	Mary Orr	14	Jay-County, Indiana	Indiana	—	Daughter
1930	Mary A Orr		Pender, North Carolina	North Carolina	—	Wife
1920	Mary Orr		Wayne, Illinois	Illinois	—	Daughter
1940	Mary Orr	45	Blount-County, Tennessee	North Carolina	—	Wife
1910	Mary B Orr		Transylvania, North Carolina	North Carolina	—	Daughter
1930	Mary J. Orr		Lewis, Washington	Washington	—	Daughter
1930	Mary E Orr		Bear Lake, Idaho	Idaho	—	Daughter
1940	Mary E. Orr	16	Dallas-County, Texas	Texas	—	Daughter
1940	Mary Lucy Orr	22	Mahoning-County, Ohio	Ohio	School Teacher	Daughter
1940	Mary N. Orr,	18	Obion-County, Tennessee	Tennessee	—	Daughter

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About Mary Orr US Census Records & Model Tree

We've indexed 3166 free, proprietary US Census records for Mary Orr across 1900–1950, covering 50 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, 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 3166 US Census records for Mary Orr, from 1900 to 1950, across 50 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 Orr'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 Orr 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 Orr records from the 1900 through 1950 US Federal Census, across 50 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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