How many William Dyer census records do you have?

We have 3815 US Census records for William Dyer, from 1900 to 1950, across 49 states and DC.

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

Yes. All William Dyer 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 Dyer?

We have William Dyer 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 William Dyer 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 Dyer?

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 Dyer — US Census Records & Model Tree

We found 3815 free census records for William Dyer across 6 census years (1900–1950), in 49 states and DC and 1033 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

William Dyer Census Records by State & County

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Showing of 3815 records for William Dyer US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	William Dyer	44	St.-Clair-County, Illinois	Missouri	Yard Clerk	Head
1940	William Dyer	27	Monroe-County, New York	England	Stock Clerk	Head
1940	William D. Dyer	60	Buffalo-County, Nebraska	Illinois	Farmer	Head
1930	William H. Dyer		Bryan, Oklahoma	Arkansas	Merchant	Head
1940	William S. Dyer	72	Los-Angeles-County, California	Missouri	Rancher	Head
1930	William Dyer		Cumberland, Maine	Maine	Truck Driver	Head
1910	William Dyer		Guernsey, Ohio	Ohio	Miner	Head
1910	William H Dyer		Douglas, Oregon	Oregon	Laborer	Son
1940	William Morgan Dyer	21	Lake-County, Tennessee	Tennessee	Farm Laborer	Son
1910	William H Dyer		Washington, Arkansas	Arkansas	Farmer	Head
1900	William Dyer	4	Orange, California	California	—	Son
1930	William F. H. Dyer		Kent, Rhode Island	Rhode Island	General Laborer	Head
1920	William M. Dyer		Whitfield, Georgia	Georgia	Farmer	Head
1910	William R. Dyer		Bibb, Alabama	Alabama	Blacksmith	Head
1920	William Dyer		Hampshire, Massachusetts	Massachusetts	—	Son
1940	William Dyer	48	East-Baton-Rouge-County, Louisiana	Louisiana	Farmer	Head
1940	William Dyer	50	Lancaster-County, Pennsylvania	Pennsylvania	Farming	Head
1940	William Dyer	18	Jefferson-County, Mississippi	Mississippi	Farm Hand	Son
1910	William Dyer		Cumberland, Maine	Maine	Laborer	Head
1910	William P Dyer		King, Washington	Minnesota	—	Son
1930	William H Dyer		Cerro Gordo, Iowa	Ohio	Farmer	Head
1930	William G Dyer		Anderson, South Carolina	South Carolina	—	Son
1940	William J. Dyer	45	Essex-County, Massachusetts	England	Edge Trimmer	Head
1930	William P. Dyer		Hart, Georgia	Georgia	Farmer	Head
1910	William G Dyer		Tehama, California	California	—	Son
1910	William Dyer		Kings, New York	Scotland	Merchant	Head
1910	William C Dyer		Washington, Tennessee	Tennessee	Carpenter House	Head
1940	William Dyer	16	Tippecanoe-County, Indiana	Indiana	—	Son
1930	William J Dyer		Baltimore, Maryland	Maryland	—	Son
1940	William Jr. Dyer	15	Lucas-County, Ohio	Ohio	—	Son

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About William Dyer US Census Records & Model Tree

We've indexed 3815 free, proprietary US Census records for William Dyer across 1900–1950, covering 49 states and DC: Alabama, 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 3815 US Census records for William Dyer, from 1900 to 1950, across 49 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 Dyer'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 Dyer 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 Dyer 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.