How many William Williams census records do you have?

We have 52875 US Census records for William Williams, from 1900 to 1950, across 50 states, DC, and 3 territories.

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

Yes. All William Williams 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 Williams?

We have William Williams records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 3 territories. Use the year and state filters to narrow your results.

How do I find William Williams 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 Williams?

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 Williams — US Census Records & Model Tree

We found 52875 free census records for William Williams across 6 census years (1900–1950), in 50 states, DC, and 3 territories and 2771 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 52875 records for William Williams US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	William H Williams		Edgecombe, North Carolina	North Carolina	Farm Lab	Son
1910	William Williams		Fauquier, Virginia	Virginia	Laborer	Son
1910	William Williams		Lee, Florida	Florida	—	Son
1900	William Williams	5	Randolph, Alabama	Alabama	—	Son
1940	William Williams	24	Philadelphia-County, Pennsylvania	Pennsylvania	Mechanic	Son
1920	William A. Williams		Garrett, Maryland	Maryland	Farm Laborer	Son
1930	William Williams		Gadsden, Florida	Florida	Laborer	Son
1940	William Williams	24	Baltimore-City-County, Maryland	Maryland	Laborer	Son
1920	William Williams		San Francisco, California	California	—	Son
1900	William Williams	2	Gibson, Tennessee	Tennessee	—	Son
1940	William R Williams	26	Laclede-County, Missouri	Missouri	Laborer	Head
1920	William G. Williams		King, Washington	Washington	Steam Engineer	Son
1920	William Williams		Hempstead, Arkansas	Arkansas	—	Son
1940	William Williams	27	Pierce-County, Washington	Washington	Farmer	Son
1940	William O. Williams	24	Sullivan-County, Indiana	Indiana	Waiter	Son
1900	William Williams	50	Gadsden, Florida	Florida	Farmer	Head
1920	William A Williams		Jones, Mississippi	Alabama	Farmer	Head
1900	William Williams	43	Giles, Virginia	Virginia	Farmer	Head
1930	William G. Williams		Providence, Rhode Island	Maine	Steward	Head
1940	William H. Williams	77	Oneida-County, New York	Wales	—	Head
1940	William Williams	73	Stark-County, Ohio	Wales	Foreman	Head
1940	William J Williams	60	Essex-County, Massachusetts	New Hampshire	Percher	Head
1920	William Williams		Gogebic, Michigan	England	Captain	Head
1930	William E. Williams		Dutchess, New York	Wales	Carpenter	Head
1920	William Williams		Lackawanna, Pennsylvania	Wales	Compensating	Head
1900	William Williams	27	Chickasaw, Mississippi	Mississippi	Farmer	Head
1940	William Williams	70	Allegheny-County, Pennsylvania	Wales	—	Head
1940	William Williams	52	Delaware-County, Pennsylvania	Wales	Route Foreman	Head
1940	William Williams	64	Hamilton-County, Iowa	Iowa	Farmer	Head
1930	William Williams		Gadsden, Florida	Florida	Laborer	Head

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About William Williams US Census Records & Model Tree

We've indexed 52875 free, proprietary US Census records for William Williams across 1900–1950, covering 50 states, DC, and 3 territories: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, 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, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, U.S. Virgin Islands, 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 52875 US Census records for William Williams, from 1900 to 1950, across 50 states, DC, and 3 territories.
: 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 Williams'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 Williams 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 Williams records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 3 territories. 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.