How many William Brock census records do you have?

We have 3236 US Census records for William Brock, from 1900 to 1950, across 49 states, DC, and 1 territory.

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

Yes. All William Brock 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 Brock?

We have William Brock 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 Brock 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 Brock?

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 Brock — US Census Records & Model Tree

We found 3236 free census records for William Brock across 6 census years (1900–1950), in 49 states, DC, and 1 territory and 1041 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

William Brock Census Records by State & County

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Showing of 3236 records for William Brock US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1910	William Brock		Fairfield, South Carolina	South Carolina	Farm Laborer	Head
1930	William Brock		Sioux, Iowa	Holland	Farmer	Head
1920	William R Brock		Wright, Missouri	Missouri	Farmer	Head
1930	William Brock		Cuyahoga, Ohio	Kentucky	Porter	Head
1910	William Brock		Madison, Mississippi	Mississippi	Farm Laborer	Son
1910	William D Brock		Sedgwick, Colorado	Illinois	—	Son
1920	William M. Brock		Etowah, Alabama	Alabama	—	Son
1900	William G. Brock	9	Washington, Florida	Florida	—	Son
1930	William E Brock		Mitchell, Georgia	Georgia	Laborer	Son
1910	William Brock		Chesterfield, South Carolina	South Carolina	Farm Laborer	Son
1940	William David Brock	19	Madison-County, Kentucky	Kentucky	Delivery Boy	Son
1910	William F. Brock		Kankakee, Illinois	Illinois	Lawyer	Head
1940	William P. Brock	57	Jackson-County, Missouri	Kansas	Laborer	Head
1940	William Brock	15	Oconee-County, South Carolina	South Carolina	—	Son
1940	William Henry Brock	11	Jackson-County, Missouri	Missouri	—	Son
1940	William Brock	21	Washington-County, Louisiana	Louisiana	Farmer	Son
1940	William Brock	11	Madison-County, Kentucky	Kentucky	—	Son
1940	William Brock	44	Leslie-County, Kentucky	Kentucky	Laborer	Head
1920	William D. Brock		Leake, Mississippi	Mississippi	—	Son
1930	William Brock		Robeson, North Carolina	North Carolina	—	Son
1940	William C. Brock	69	Dawson-County, Texas	Kansas	Farming	Head
1930	William Jr Brock		Wayne, Michigan	Michigan	—	Son
1910	William Brock		Bell, Kentucky	Kentucky	Car Trimmer	Head
1910	William R Jr Brock		Hillsboro, Florida	Georgia	Electrician	Son
1940	William R Brock	40	Clarke-County, Mississippi	Alabama	—	Head
1930	William Brock		Bristol, Massachusetts	Rhode Island	Spinner	Head
1940	William W Brock	48	Tarrant-County, Texas	Missouri	Waitress	Head
1920	William B Brock		White, Tennessee	Tennessee	Farm Laborer	Son
1910	William K. Brock		Robeson, North Carolina	North Carolina	Overseer	Head
1920	William Brock		Craven, North Carolina	North Carolina	Farmer	Head

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About William Brock US Census Records & Model Tree

We've indexed 3236 free, proprietary US Census records for William Brock across 1900–1950, covering 49 states, DC, and 1 territory: Alabama, Alaska, American Samoa, 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 3236 US Census records for William Brock, 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 Brock'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 Brock 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 Brock 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.