How many William Spencer census records do you have?

We have 7619 US Census records for William Spencer, from 1900 to 1950, across 50 states and DC.

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

Yes. All William Spencer 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 Spencer?

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

How do I find William Spencer 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 Spencer?

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 Spencer — US Census Records & Model Tree

We found 7619 free census records for William Spencer across 6 census years (1900–1950), in 50 states and DC and 1469 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

William Spencer Census Records by State & County

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Showing of 7619 records for William Spencer US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	William Spencer	38	Washington-County, Pennsylvania	WEST VIRGINIA	Laborer	Son
1930	William Spencer		Essex, New Jersey	New Jersey	Plumber	Son
1920	William L Spencer		Buckingham, Virginia	Virginia	—	Son
1940	William Spencer	32	Martinsville-City-County, Virginia	Virginia	Laborer	Son
1940	William Spencer	22	Brooks-County, Georgia	Georgia	Farmer	Son
1940	William Spencer	41	Isabella-County, Michigan	Michigan	Laborer	Head
1920	William Spencer		Jefferson, Alabama	Alabama	Track Worker	Head
1940	William Spencer	40	Sussex-County, Delaware	Delaware	Laborer	Son
1930	William M Spencer		Jackson, Georgia	Georgia	Farmer	Head
1920	William H Spencer		Tyler, West Virginia	West Virginia	Farmer	Head
1920	William Spencer		Macomb, Michigan	Michigan	Proprietor	Head
1940	William Spencer	50	Washington-County, Pennsylvania	Virginia	Sheet Metal	Head
1930	William T Spencer		Pottawatomie, Oklahoma	Georgia	Farmer	Head
1930	William W. Spencer		Seminole, Oklahoma	Mississippi	Farmer	Head
1940	William G. Spencer	71	Clearfield-County, Pennsylvania	Pennsylvania	Merchant	Head
1930	William H Spencer		Schuyler, New York	Pennsylvania	Farmer	Head
1930	William Spencer		Jefferson, Missouri	Missouri	Laborer	Son
1930	William Spencer		None, None	Missouri	Laborer	Son
1930	William Spencer		Nelson, Virginia	Virginia	—	Son
1940	William Spencer	23	Jones-County, Georgia	Georgia	Saw Mill Laborer	Son
1920	William Spencer		Pittsylvania, Virginia	Virginia	Worker	Head
1940	William Spencer	15	Broome-County, New York	New York	—	Son
1910	William J Spencer		Charlotte, Virginia	Virginia	Laborer	Son
1940	William J. Spencer	54	Baltimore-City-County, Maryland	Pennsylvania	Acid Maker	Head
1940	William H Spencer	15	Cook-County, Illinois	Illinois	—	Son
1930	William Spencer		Kent, Delaware	Delaware	—	Son
1920	William Spencer		Barren, Kentucky	Kentucky	Farmer	Head
1930	William C Spencer		Henry, Virginia	Virginia	Laborer	Head
1930	William T Spencer		Kent, Delaware	Delaware	Laborer	Head
1940	William J. Spencer	32	Garland-County, Arkansas	Oklahoma	Truck Driver	Head

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About William Spencer US Census Records & Model Tree

We've indexed 7619 free, proprietary US Census records for William Spencer across 1900–1950, covering 50 states and DC: Alabama, Alaska, 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 7619 US Census records for William Spencer, from 1900 to 1950, across 50 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 Spencer'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 Spencer 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 Spencer records from the 1900 through 1950 US Federal Census, across 50 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.