How many John Rossi census records do you have?

We have 2763 US Census records for John Rossi, from 1900 to 1950, across 44 states and DC.

What's in a John Rossi census record?

You'll see John'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 John Rossi'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 John Rossi census records free?

Yes. All John Rossi 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 John Rossi?

We have John Rossi records from the 1900 through 1950 US Federal Census, across 44 states and DC. Use the year and state filters to narrow your results.

How do I find John Rossi 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 John Rossi?

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.

John Rossi — US Census Records & Model Tree

We found 2763 free census records for John Rossi across 6 census years (1900–1950), in 44 states and DC and 331 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Rossi Census Records by State & County

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Showing of 2763 records for John Rossi US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Rossi	33	Essex-County, New Jersey	New Jersey	Factory	Head
1930	John Rossi		Providence, Rhode Island	Rhode Island	Truck Driver	Son
1930	John Rossi		Essex, New Jersey	New Jersey	—	Son
1940	John Rossi	36	Middlesex-County, Massachusetts	Massachusetts	Truck Driver	Head
1940	John Rossi	65	Kosciusko-County, Indiana	Illinois	Farmer	Head
1930	John Rossi		Mercer, New Jersey	New Jersey	None	Son
1930	John Rossi		Mercer, New Jersey	New Jersey	None	Son
1930	John Rossi		San Francisco, California	California	—	Son
1940	John Rossi	25	Suffolk-County, Massachusetts	Massachusetts	Laborer	Son
1910	John Rossi		San Francisco, California	Italy	Worker	Head
1940	John Rossi	11	Hudson-County, New Jersey	New Jersey	—	Son
1940	John Rossi	27	Hudson-County, New Jersey	New Jersey	Operator	Son
1940	John Jr Rossi	15	Hudson-County, New Jersey	New Jersey	—	Son
1940	John Rossi	15	Bristol-County, Massachusetts	Rhode Island	—	Son
1930	John A Rossi		Fremont, Wyoming	Wyoming	—	Son
1930	John Rossi		Bergen, New Jersey	New Jersey	None	Son
1940	John Rossi	53	Trumbull-County, Ohio	Roumania	Laborer	Head
1940	John Rossi	16	Lake-County, Indiana	Indiana	—	Son
1920	John Rossi		Santa Barbara, California	California	None	Son
1940	John Rossi	12	Suffolk-County, Massachusetts	Massachusetts	—	Son
1940	John Rossi	23	Cook-County, Illinois	Illinois	Trucker	Son
1930	John Rossi		Camden, New Jersey	New Jersey	—	Son
1910	John L. Rossi		San Francisco, California	California	Messenger	Son
1910	John Rossi		Hudson, New Jersey	New Jersey	None	Son
1930	John Rossi		Trumbull, Ohio	Ohio	—	Son
1930	John Rossi		Hampden, Massachusetts	Massachusetts	—	Son
1940	John Rossi	23	Suffolk-County, Massachusetts	Massachusetts	Carpenter Helper	Son
1940	John Rossi	12	Cook-County, Illinois	Illinois	—	Son
1930	John Jr. Rossi		Bergen, New Jersey	New Jersey	—	Son
1940	John B. Rossi	50	Providence-County, Rhode Island	Italy	Power Presser	Head

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About John Rossi US Census Records & Model Tree

We've indexed 2763 free, proprietary US Census records for John Rossi across 1900–1950, covering 44 states and DC: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, 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 John 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 2763 US Census records for John Rossi, from 1900 to 1950, across 44 states and DC.
: You'll see John'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 John Rossi'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 John Rossi 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 John Rossi records from the 1900 through 1950 US Federal Census, across 44 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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