How many William Hammond census records do you have?

We have 5967 US Census records for William Hammond, from 1900 to 1950, across 50 states, DC, and 1 territory.

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

Yes. All William Hammond 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 Hammond?

We have William Hammond records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find William Hammond 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 Hammond?

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 Hammond — US Census Records & Model Tree

We found 5967 free census records for William Hammond across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 1291 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

William Hammond Census Records by State & County

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Showing of 5967 records for William Hammond US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	William E. Hammond		Klamath, Oregon	Oregon	Farm Laborer	Son
1940	William Hammond	34	Norfolk-County, Massachusetts	Massachusetts	Carpenter	Head
1930	William J. Hammond		Attala, Mississippi	Mississippi	—	Son
1920	William R Hammond		Providence, Rhode Island	Rhode Island	Hand	Head
1940	William J. Hammond	22	Onondaga-County, New York	New York	Helper Machinist	Son
1940	William Hammond	26	Jefferson-County, Louisiana	Louisiana	Celotex Corp	Son
1940	William Hammond	23	Saginaw-County, Michigan	Michigan	Truck Driver	Head
1940	William Hammond	29	Fulton-County, Georgia	Georgia	Chemist	Son
1930	William Hammond		Lancaster, South Carolina	South Carolina	Farmer	Head
1940	William Hammond	42	Ottawa-County, Michigan	Michigan	Burning Enamel	Head
1920	William Hammond		Fulton, Illinois	Illinois	None	Head
1940	William P Hammond	67	Union-County, New Jersey	New Jersey	Driver	Head
1940	William Hammond	54	Queens-County, New York	England	Stationary Engineer	Head
1940	William B. Hammond	63	Saginaw-County, Michigan	New York	Helper	Head
1910	William O Hammond		Grant, Oklahoma	Nebraska	Farmer	Head
1920	William Hammond		Lyon, Kansas	Ohio	Farmer	Head
1910	William H. Hammond		Shelby, Illinois	Iowa	Farmer	Head
1920	William G. Hammond		Passaic, New Jersey	New York	—	Head
1920	William H. Hammond		Bristol, Massachusetts	Massachusetts	—	Head
1930	William Hammond		New York, New York	New York	Laborer	Son
1930	William Hammond		New York, New York	New York	Laundry	Son
1930	William Hammond		Dekalb, Georgia	Georgia	Farmer	Head
1930	William L. Hammond		Kent, Rhode Island	Rhode Island	—	Son
1940	William C. Hammond	13	Etowah-County, Alabama	Alabama	—	Son
1930	William Hammond		Mclean, Illinois	Indiana	Laborer	Son
1940	William Hammond	12	Scioto-County, Ohio	Kentucky	—	Son
1920	William Hammond		Fayette, Kentucky	Kentucky	Attendant	Son
1940	William S. Hammond	19	Morgan-County, Tennessee	Tennessee	Radio Operator	Son
1930	William Hammond		Lancaster, South Carolina	South Carolina	—	Son
1910	William Hammond		Passaic, New Jersey	New York	Warper	Head

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About William Hammond US Census Records & Model Tree

We've indexed 5967 free, proprietary US Census records for William Hammond across 1900–1950, covering 50 states, DC, and 1 territory: 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, 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 5967 US Census records for William Hammond, from 1900 to 1950, across 50 states, DC, and 1 territory.
: 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 Hammond'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 Hammond 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 Hammond records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. 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.