How many John Farrell census records do you have?

We have 8339 US Census records for John Farrell, from 1900 to 1950, across 49 states and DC.

What's in a John Farrell 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 Farrell'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 Farrell census records free?

Yes. All John Farrell 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 Farrell?

We have John Farrell 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 John Farrell 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 Farrell?

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 Farrell — US Census Records & Model Tree

We found 8339 free census records for John Farrell across 6 census years (1900–1950), in 49 states and DC and 993 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Farrell Census Records by State & County

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Showing of 8339 records for John Farrell US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Farrell	22	Suffolk-County, Massachusetts	Massachusetts	Elevator Operator	Son
1940	John H. Farrell	45	Broome-County, New York	Illinois	Dentist	Head
1940	John Farrell	21	Luzerne-County, Pennsylvania	Pennsylvania	Clerk	Son
1940	John J Farrell	48	Erie-County, New York	New York	Tug Captain	Head
1940	John Farrell	24	Durham-County, North Carolina	North Carolina	—	Son
1940	John A Farrell	26	Worcester-County, Massachusetts	Rhode Island	—	Son
1940	John Farrell	74	Baltimore-City-County, Maryland	Maryland	—	Head
1940	John R. Farrell	37	Davidson-County, Tennessee	Tennessee	Fireman	Head
1930	John J. Farrell		Providence, Rhode Island	Rhode Island	Apprentice	Son
1940	John Farrell	51	Hudson-County, New Jersey	New Jersey	35	Head
1940	John Farrell	47	Suffolk-County, Massachusetts	Newfoundland	Iron Worker	Head
1920	John J Farrell		Kings, New York	Ireland	Patrolman	Head
1920	John L. Farrell		Sullivan, Pennsylvania	Pennsylvania	Farmer	Head
1940	John (X) Farrell	53	New-York-County, New York	Ireland	Manager	Head
1920	John Farrell		Middlesex, Massachusetts	Ireland	Finisher	Head
1940	John Farrell	65	New-York-County, New York	Ireland	Newspaper Mailer	Head
1930	John M. Farrell		Leavenworth, Kansas	Kansas	Farmer	Head
1920	John Farrell		New York, New York	England	Fireman	Head
1920	John Farrell		Queens, New York	Ireland	Taxi Driver	Head
1940	John J. Farrell	63	Cook-County, Illinois	Canada	Officer	Head
1940	John Farrell	62	Philadelphia-County, Pennsylvania	Ireland	Bartender	Head
1940	John Farrell	59	Hamilton-County, Ohio	Ohio	Painter	Head
1940	John R Farrell	66	Rutland-County, Vermont	Vermont	—	Head
1930	John Farrell		Philadelphia, Pennsylvania	Pennsylvania	None	Son
1910	John Farrell		Rensselaer, New York	New York	Farmer	Head
1940	John Farrell	10	Orleans-County, Louisiana	Louisiana	—	Son
1940	John J. Farrell	17	Middlesex-County, Massachusetts	Massachusetts	—	Son
1930	John Farrell		Scott, Mississippi	Mississippi	None	Son
1940	John Farrell	15	Middlesex-County, Massachusetts	Massachusetts	—	Son
1910	John Farrell		Sandusky, Ohio	Ohio	Contractor	Head

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About John Farrell US Census Records & Model Tree

We've indexed 8339 free, proprietary US Census records for John Farrell across 1900–1950, covering 49 states and DC: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, 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 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 8339 US Census records for John Farrell, from 1900 to 1950, across 49 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 Farrell'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 Farrell 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 Farrell 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.

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