How many William Adams census records do you have?

We have 25419 US Census records for William Adams, from 1900 to 1950, across 50 states, DC, and 2 territories.

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

Yes. All William Adams 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 Adams?

We have William Adams records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 territories. Use the year and state filters to narrow your results.

How do I find William Adams 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 Adams?

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 Adams — US Census Records & Model Tree

We found 25419 free census records for William Adams across 6 census years (1900–1950), in 50 states, DC, and 2 territories and 2406 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 25419 records for William Adams US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	William E. Jr. Adams	24	Essex-County, Massachusetts	Massachusetts	Usher	Son
1910	William L. Adams		Denver, Colorado	Colorado	—	Son
1940	William M Adams	35	York-County, South Carolina	South Carolina	Proprietor	Head
1910	William Adams		Hinds, Mississippi	Mississippi	Laborer	Son
1910	William Adams		Dooly, Georgia	Georgia	Laborer	Son
1930	William Adams		Essex, Massachusetts	Massachusetts	United States Navy	Son
1910	William W Adams		Klamath, Oregon	Oregon	Farmer	Son
1940	William M. Adams	20	Webster-County, Iowa	Iowa	Clerk	Son
1940	William F. Adams	27	Todd-County, Minnesota	Minnesota	Farm	Son
1940	William Adams	47	Burlington-County, New Jersey	New Jersey	Rope Maker	Head
1900	William Adams	2	Bibb, Georgia	Georgia	—	Son
1920	William Adams		None, Maryland	Maryland	Machinist	Son
1940	William Adams	23	Burlington-County, New Jersey	New Jersey	Laborer	Son
1940	William Adams	28	Broome-County, New York	New York	Bank Clerk	Head
1920	William M. Adams		Lancaster, Pennsylvania	Pennsylvania	Laborer	Head
1920	William R Adams		San Joaquin, California	California	—	Son
1920	William Adams		Jefferson, Alabama	Alabama	None	Son
1910	William S Adams		Craighead, Arkansas	Arkansas	—	Son
1920	William H. Adams		Beaufort, North Carolina	North Carolina	Carpenter	Son
1930	William H. Jr. Adams		Rock Island, Illinois	Illinois	Artist	Son
1940	William Adams	49	Orleans-County, Louisiana	Louisiana	Lineman	Head
1920	William Adams		Cumberland, Tennessee	Tennessee	Farmer	Head
1940	William G. Adams	68	Plymouth-County, Massachusetts	Massachusetts	Costumer	Head
1940	William H. Adams	49	Montgomery-County, Maryland	Maryland	Laborer	Head
1910	William Adams		Garrard, Kentucky	Kentucky	Farmer	Head
1910	William Adams		Ballard, Kentucky	Tennessee	Farmer	Head
1930	William Adams		Hinds, Mississippi	Mississippi	Cook	Head
1920	William F Adams		Baltimore, Maryland	Maryland	Bricklayer	Head
1910	William J Adams		Halifax, Virginia	Virginia	Farmer	Head
1930	William A Adams		Gwinnett, Georgia	Georgia	Farmer	Head

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About William Adams US Census Records & Model Tree

We've indexed 25419 free, proprietary US Census records for William Adams across 1900–1950, covering 50 states, DC, and 2 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, 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 25419 US Census records for William Adams, from 1900 to 1950, across 50 states, DC, and 2 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 Adams'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 Adams 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 Adams records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 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.