How many William Dillon census records do you have?

We have 4085 US Census records for William Dillon, from 1900 to 1950, across 47 states and DC.

What's in a William Dillon 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 Dillon'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 Dillon census records free?

Yes. All William Dillon 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 Dillon?

We have William Dillon records from the 1900 through 1950 US Federal Census, across 47 states and DC. Use the year and state filters to narrow your results.

How do I find William Dillon 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 Dillon?

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 Dillon — US Census Records & Model Tree

We found 4085 free census records for William Dillon across 6 census years (1900–1950), in 47 states and DC and 873 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 4085 records for William Dillon US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	William Jr. Dillon	21	Montgomery-County, Kansas	Kansas	Ice Puller	Son
1940	William J. Dillon	23	Suffolk-County, Massachusetts	Massachusetts	Clerk	Head
1940	William Dillon	21	Ramsey-County, Minnesota	Minnesota	Farm Hand	Son
1940	William R. Dillon	57	Franklin-County, Mississippi	Mississippi	Farmer	Head
1930	William C. Dillon		Cambria, Pennsylvania	Pennsylvania	Loader	Head
1930	William Dillon		Clay, Texas	Missouri	Foreman	Head
1940	William B. Dillon	43	New-Haven-County, Connecticut	Connecticut	Comb-Sawyer	Head
1920	William R Dillon		Ashtabula, Ohio	Ohio	—	Son
1910	William J Dillon		Pike, Indiana	Indiana	Carpenter	Head
1940	William Dillon	34	Kings-County, New York	New York	Laborer	Head
1920	William H. Dillon		Tyler, West Virginia	Ohio	Farmer	Head
1920	William T. Dillon		Franklin, Virginia	Virginia	Farmer	Head
1940	William J. Dillon	15	Wayne-County, Michigan	Michigan	—	Son
1940	William J Dillon	16	Ramsey-County, Minnesota	Minnesota	—	Son
1930	William Dillon		Westchester, New York	New York	—	Son
1930	William S Dillon		New York, New York	New York	—	Son
1940	William Dillon	33	Kings-County, New York	New York	Foreman	Head
1920	William J Dillon		Orange, New York	New York	—	Son
1930	William J. Jr. Dillon		Forsyth, North Carolina	North Carolina	—	Son
1920	William C. Dillon		Lake, Illinois	Illinois	Farmer	Head
1930	William Dillon		Boyd, Kentucky	Kentucky	None	Son
1930	William Dillon		Walthall, Mississippi	Mississippi	—	Son
1940	William Dillon	14	Cook-County, Illinois	Illinois	—	Son
1920	William J. Dillon		Oneida, New York	New York	Presser	Son
1940	William Dillon	20	Bronx-County, New York	New York	Messenger	Son
1920	William Dillon		New York, New York	New York	Clerk	Son
1940	William L. Dillon	27	Queens-County, New York	England	Adv. Writer	Son
1900	William Dillon	51	Natchitoches, Louisiana	Mississippi	Farmer	Head
1940	William J. Dillon	15	Essex-County, New Jersey	New Jersey	—	Son
1940	William Dillon	18	Montgomery-County, Pennsylvania	Pennsylvania	Waitress	Son

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About William Dillon US Census Records & Model Tree

We've indexed 4085 free, proprietary US Census records for William Dillon across 1900–1950, covering 47 states and DC: Alabama, 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, 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 4085 US Census records for William Dillon, from 1900 to 1950, across 47 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 Dillon'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 Dillon 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 Dillon records from the 1900 through 1950 US Federal Census, across 47 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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