How many William Mccullough census records do you have?

We have 3247 US Census records for William Mccullough, from 1900 to 1950, across 49 states and DC.

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

Yes. All William Mccullough 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 Mccullough?

We have William Mccullough 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 Mccullough 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 Mccullough?

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 Mccullough — US Census Records & Model Tree

We found 3247 free census records for William Mccullough across 6 census years (1900–1950), in 49 states and DC and 809 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

William Mccullough Census Records by State & County

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Showing of 3247 records for William Mccullough US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	William Mccullough	26	Allegheny-County, Pennsylvania	Pennsylvania	Salesman	Son
1940	William J. Mccullough	31	Delaware-County, Pennsylvania	Pennsylvania	Salesman	Son
1930	William T. Mccullough		Armstrong, Pennsylvania	Pennsylvania	—	Son
1930	William Mccullough		Philadelphia, Pennsylvania	Pennsylvania	—	Son
1940	William Mccullough	31	Cuyahoga-County, Ohio	South Carolina	Laborer	Son
1940	William M. Mccullough	25	Indiana-County, Pennsylvania	Pennsylvania	Farm Hand	Son
1910	William Mccullough		Chester, South Carolina	South Carolina	Farm Laborer	Head
1930	William Mccullough		Clay, Indiana	Indiana	Teacher	Head
1920	William Mccullough		Allegheny, Pennsylvania	Ireland	Agent	Head
1920	William T Mccullough		Pawnee, Oklahoma	Pennsylvania	Farmer	Head
1940	William Mccullough	75	Wapello-County, Iowa	Illinois	—	Head
1940	William Mccullough	55	Indiana-County, Pennsylvania	Pennsylvania	Farmer	Head
1920	William Mccullough		Barbour, Alabama	Alabama	Farm Laborer	Son
1940	William Mccullough	12	Licking-County, Ohio	Ohio	—	Son
1920	William J. Mccullough		Allegheny, Pennsylvania	Pennsylvania	None	Son
1920	William Mccullough		Allegheny, Pennsylvania	Pennsylvania	—	Son
1940	William Mccullough	12	Wayne-County, Michigan	Michigan	—	Son
1930	William Mccullough		Philadelphia, Pennsylvania	Pennsylvania	—	Son
1940	William H. Mccullough	11	Bronx-County, New York	New York	—	Son
1940	William Jr. Mccullough	23	Woodbury-County, Iowa	Iowa	Lens Grinder	Son
1940	William Mccullough	55	Woodbury-County, Iowa	Iowa	Salesman	Head
1930	William Mccullough		Indiana, Pennsylvania	Pennsylvania	Laborer	Son
1930	William Mccullough		Philadelphia, Pennsylvania	Pennsylvania	—	Son
1910	William Mccullough		Gallatin, Montana	Missouri	Farmer	Head
1910	William Mccullough		Greenville, South Carolina	South Carolina	Farm Laborer	Son
1910	William Mccullough		Salt Lake, Utah	Utah	Merchant	Head
1940	William Mccullough	54	Allegheny-County, Pennsylvania	Pennsylvania	Salesman	Head
1920	William Mccullough		Rice, Minnesota	Minnesota	Farm Laborer	Son
1940	William Mccullough	18	Cherokee-County, South Carolina	South Carolina	Farm Labor	Son
1940	William Mccullough	60	Philadelphia-County, Pennsylvania	England	Porter	Head

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About William Mccullough US Census Records & Model Tree

We've indexed 3247 free, proprietary US Census records for William Mccullough across 1900–1950, covering 49 states and DC: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, 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 3247 US Census records for William Mccullough, 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 Mccullough'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 Mccullough 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 Mccullough 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.

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