How many Mary Peters census records do you have?

We have 10094 US Census records for Mary Peters, from 1900 to 1950, across 50 states and DC.

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

Yes. All Mary Peters 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 Peters?

We have Mary Peters 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 Peters 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 Peters?

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 Peters — US Census Records & Model Tree

We found 10094 free census records for Mary Peters across 6 census years (1900–1950), in 50 states and DC and 1569 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Peters Census Records by State & County

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Showing of 10094 records for Mary Peters US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Mary Peters	35	Clinton-County, Illinois	Ohio	Machine Operator	Daughter
1920	Mary A. Peters		Cook, Illinois	Illinois	—	Daughter
1940	Mary Peters	26	Baltimore-City-County, Maryland	Maryland	—	Daughter
1940	Mary Peters	35	Bee-County, Texas	Texas	—	Daughter
1910	Mary H. Peters		New York, New York	Germany	Keeper	Wife
1940	Mary Peters	77	Carver-County, Minnesota	Minnesota	—	Head
1920	Mary Peters		Hamilton, Illinois	Indiana	—	Wife
1940	Mary Peters	50	Erie-County, New York	Syria	—	Wife
1930	Mary E. Peters		Kootenai, Idaho	Kentucky	—	Head
1930	Mary Peters		Belmont, Ohio	Ohio	—	Wife
1920	Mary J. Peters		Gadsden, Florida	Florida	Farm Laborer	Head
1940	Mary Peters	56	Olmsted-County, Minnesota	Denmark	—	Wife
1920	Mary Peters		Taylor, Wisconsin	Germany	None	Wife
1900	Mary Peters	49	Middlesex, Massachusetts	Scotland	Hat Trimmer	Head
1930	Mary Peters		Morgan, Georgia	Georgia	—	Wife
1920	Mary S Peters		Lehigh, Pennsylvania	Pennsylvania	—	Wife
1940	Mary A. Peters	67	Sequoyah-County, Oklahoma	Arkansas	—	Wife
1940	Mary E. Peters	70	Baltimore-City-County, Maryland	Maryland	—	Head
1900	Mary A Peters	44	Camden, New Jersey	New Jersey	—	Wife
1940	Mary O Peters	60	Alameda-County, California	Portugal	—	Head
1940	Mary Peters	61	Elliott-County, Kentucky	Kentucky	None	Head
1940	Mary Peters	64	Middlesex-County, Massachusetts	Portugal	—	Head
1940	Mary Peters	56	Cerro-Gordo-County, Iowa	Iowa	Farmer	Wife
1920	Mary Peters		Calhoun, Illinois	Illinois	None	Wife
1940	Mary Peters	74	Scott-County, Iowa	Iowa	—	Head
1930	Mary Peters		Middlesex, Massachusetts	Scotland	—	Head
1930	Mary Peters		Calhoun, Illinois	Illinois	—	Daughter
1930	Mary Peters		Burke, North Dakota	Minnesota	—	Wife
1910	Mary Peters		Carroll, Iowa	Iowa	—	Daughter
1910	Mary E. Peters		Butler, Pennsylvania	Pennsylvania	—	Wife

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About Mary Peters US Census Records & Model Tree

We've indexed 10094 free, proprietary US Census records for Mary Peters 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 10094 US Census records for Mary Peters, 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 Peters'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 Peters 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 Peters 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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