How many William Nicholson census records do you have?

We have 3477 US Census records for William Nicholson, from 1900 to 1950, across 49 states, DC, and 1 territory.

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

Yes. All William Nicholson 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 Nicholson?

We have William Nicholson records from the 1900 through 1950 US Federal Census, across 49 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find William Nicholson 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 Nicholson?

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 Nicholson — US Census Records & Model Tree

We found 3477 free census records for William Nicholson across 6 census years (1900–1950), in 49 states, DC, and 1 territory and 915 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

William Nicholson Census Records by State & County

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Showing of 3477 records for William Nicholson US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	William J. Nicholson	33	Westmoreland-County, Pennsylvania	Pennsylvania	Laborer	Son
1940	William Nicholson	21	Maury-County, Tennessee	Tennessee	Farmer	Son
1940	William Nicholson	37	Knox-County, Indiana	Indiana	Farmer	Head
1940	William Nicholson	55	Sedgwick-County, Kansas	Kansas	Farmer	Head
1910	William Nicholson		Jefferson, Pennsylvania	Pennsylvania	Laborer	Head
1910	William F Nicholson		Stark, Illinois	Illinois	Farmer	Head
1940	William S. Nicholson	74	Coos-County, Oregon	Iowa	Druggist	Head
1930	William Nicholson		Vernon, Wisconsin	Wisconsin	Farmer	Head
1940	William H. Nicholson	70	Allegheny-County, Pennsylvania	Indiana	—	Head
1930	William Nicholson		Queens, New York	New York	—	Son
1940	William Nicholson	16	Fayette-County, Pennsylvania	Pennsylvania	—	Son
1940	William Nicholson	8	Wayne-County, Michigan	Michigan	—	Son
1920	William H. Nicholson		Woods, Oklahoma	Missouri	Farmer	Head
1930	William Nicholson		Richland, Ohio	Ohio	Enameling	Son
1940	William Nicholson	62	Union-County, New Mexico	Kansas	Carpenter	Head
1940	William Nicholson	50	Kemper-County, Mississippi	Mississippi	Farmer	Head
1940	William Nicholson	18	Philadelphia-County, Pennsylvania	South Carolina	New Worker	Son
1940	William S. Nicholson	55	Habersham-County, Georgia	Georgia	Farmer	Head
1940	William H. Nicholson	17	Travis-County, Texas	Texas	—	Son
1920	William Nicholson		Macomb, Michigan	Ohio	Laborer	Head
1930	William H Nicholson		Harrison, West Virginia	West Virginia	Machinist	Head
1910	William S. Nicholson		Cheatham, Tennessee	Tennessee	Merchant	Son
1910	William Nicholson		Calhoun, Iowa	Illinois	Farmer	Head
1920	William Nicholson		Monongalia, West Virginia	West Virginia	—	Son
1930	William A Nicholson		Washington, Indiana	Indiana	None	Son
1920	William Nicholson		Allegheny, Pennsylvania	Pennsylvania	Helper	Son
1940	William S Nicholson	38	Middlesex-County, Massachusetts	Massachusetts	Bank Clerk	Head
1930	William R. Nicholson		Halifax, North Carolina	North Carolina	Fireman	Head
1940	William Nicholson	39	Kings-County, New York	Irish Free State	Laborer	Head
1930	William M Nicholson		Newton, Mississippi	Mississippi	—	Son

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About William Nicholson US Census Records & Model Tree

We've indexed 3477 free, proprietary US Census records for William Nicholson across 1900–1950, covering 49 states, DC, and 1 territory: Alabama, 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 3477 US Census records for William Nicholson, from 1900 to 1950, across 49 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 Nicholson'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 Nicholson 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 Nicholson records from the 1900 through 1950 US Federal Census, across 49 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.