How many William Farrell census records do you have?

We have 5430 US Census records for William Farrell, from 1900 to 1950, across 50 states and DC.

What's in a William Farrell census record?

You'll see William'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 William 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 William Farrell census records free?

Yes. All William 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 William Farrell?

We have William Farrell 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 William 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 William 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.

William Farrell — US Census Records & Model Tree

We found 5430 free census records for William Farrell across 6 census years (1900–1950), in 50 states and DC and 798 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

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Showing of 5430 records for William Farrell US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	William H. Farrell		Berkshire, Massachusetts	Massachusetts	—	Son
1940	William Farrell	32	Cambria-County, Pennsylvania	Pennsylvania	Miner	Head
1940	William Farrell	20	Davidson-County, Tennessee	Tennessee	Laborer	Son
1940	William Farrell	32	Bronx-County, New York	New York	Meter Reader	Son
1920	William Farrell		Montgomery, New York	New York	—	Son
1940	William Farrell	31	Seneca-County, New York	New York	Clerk	Head
1940	William Farrell	27	Bronx-County, New York	New York	Floor Layer	Son
1930	William Farrell		Essex, New Jersey	New Jersey	Foreman	Head
1930	William Farrell		Allegheny, Pennsylvania	West Virginia	Laborer - Gen	Head
1930	William Farrell		Warren, Virginia	Maine	Clerk	Head
1930	William Farrell		Philadelphia, Pennsylvania	Pennsylvania	None	Son
1940	William J. Farrell	19	King-County, Washington	Montana	—	Son
1920	William A Farrell		Pike, Kentucky	Kentucky	Farmer	Head
1930	William H Farrell		Coffee, Tennessee	Tennessee	Farmer	Head
1930	William Farrell		Lawrence, Pennsylvania	Pennsylvania	—	Son
1940	William Farrell	42	Milwaukee-County, Wisconsin	Illinois	Machinist	Head
1940	William Jr. Farrell	15	Orleans-County, Louisiana	Louisiana	—	Son
1940	William Farrell	56	Philadelphia-County, Pennsylvania	Pennsylvania	Lineman	Head
1930	William Farrell		Lackawanna, Pennsylvania	Pennsylvania	—	Son
1900	William Farrell	56	Philadelphia, Pennsylvania	England	Ship Rigger	Head
1940	William Farrell	18	Hamilton-County, Ohio	Ohio	New Worker	Son
1940	William Farrell	16	Middlesex-County, New Jersey	New Jersey	—	Son
1940	William Farrell	20	Providence-County, Rhode Island	Rhode Island	—	Son
1920	William Farrell		Kings, New York	New York	Laborer	Son
1940	William Farrell	14	Broome-County, New York	New York	—	Son
1940	William J. Farrell	18	Richland-County, Wisconsin	Wisconsin	—	Son
1940	William Farrell	54	Bronx-County, New York	New York	Architect	Head
1910	William Farrell		Kings, New York	Ireland	Fireman	Head
1930	William Farrell		Kane, Illinois	Illinois	Farmer	Head
1930	William Farrell		New York, New York	New York	Salesman	Head

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About William Farrell US Census Records & Model Tree

We've indexed 5430 free, proprietary US Census records for William Farrell 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 William 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 5430 US Census records for William Farrell, from 1900 to 1950, across 50 states and DC.
: You'll see William'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 William 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 William 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 William Farrell 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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