How many William Pierce census records do you have?

We have 7379 US Census records for William Pierce, from 1900 to 1950, across 49 states, DC, and 2 territories.

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

Yes. All William Pierce 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 Pierce?

We have William Pierce records from the 1900 through 1950 US Federal Census, across 49 states, DC, and 2 territories. Use the year and state filters to narrow your results.

How do I find William Pierce 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 Pierce?

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 Pierce — US Census Records & Model Tree

We found 7379 free census records for William Pierce across 6 census years (1900–1950), in 49 states, DC, and 2 territories and 1585 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

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Showing of 7379 records for William Pierce US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	William Pierce	21	Providence-County, Rhode Island	Rhode Island	Porter	Son
1940	William D. Pierce	47	Gloucester-County, Virginia	Virginia	Laborer	Head
1940	William A Pierce	38	Los-Angeles-County, California	Tennessee	Motion Picture Producer	Head
1940	William Pierce	23	Waseca-County, Minnesota	Minnesota	Laborer	Son
1920	William Pierce		Cedar, Iowa	Iowa	Farmer	Head
1940	William M Pierce	58	Stephens-County, Oklahoma	Texas	Farmer	Head
1920	William Pierce		Vernon, Wisconsin	Wisconsin	Farmer	Head
1940	William F. Pierce	72	Chester-County, Pennsylvania	Delaware	Farmer	Head
1930	William H. Pierce		Worcester, Massachusetts	Massachusetts	Retired	Head
1920	William E. Pierce		Essex, Massachusetts	Massachusetts	Elevator Operator	Head
1920	William H. Pierce		Cheshire, New Hampshire	New Hampshire	—	Head
1940	William A. Pierce	30	Bertie-County, North Carolina	North Carolina	—	Son
1910	William A B Pierce		Towns, Georgia	Tennessee	—	Head
1920	William E Pierce		Bertie, North Carolina	North Carolina	Farmer	Head
1930	William Pierce		Foster, North Dakota	Iowa	Farmer	Head
1930	William Pierce		Neosho, Kansas	Kansas	—	Son
1940	William Pierce	13	Baltimore-City-County, Maryland	Maryland	—	Son
1940	William L. Pierce	21	Plymouth-County, Massachusetts	Massachusetts	Tack Feeder	Son
1940	William Pierce	18	Genesee-County, Michigan	Canada-English	Laborer	Son
1940	William Pierce	10	Dallas-County, Texas	Texas	—	Son
1920	William Jr. Pierce		Chickasaw, Mississippi	Mississippi	—	Son
1900	William Pierce	41	Champaign, Illinois	Illinois	Grain Dealer	Head
1940	William J. Pierce	15	Jackson-County, Michigan	Michigan	—	Son
1910	William Pierce		New York, New York	New York	Switchman	Head
1940	William Pierce	35	Blair-County, Pennsylvania	Mississippi	Brick Hacker	Head
1940	William Pierce	85	Perry-County, Mississippi	Mississippi	0	Head
1920	William S Pierce		Marshall, West Virginia	West Virginia	Farmer	Head
1920	William Pierce		Allegheny, Pennsylvania	Pennsylvania	Proprietor	Son
1940	William P. Pierce	17	Wayne-County, Michigan	Michigan	—	Son
1940	William J. Pierce	17	East-Baton-Rouge-County, Louisiana	Louisiana	—	Son

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About William Pierce US Census Records & Model Tree

We've indexed 7379 free, proprietary US Census records for William Pierce across 1900–1950, covering 49 states, DC, and 2 territories: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, 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, Puerto Rico, 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 7379 US Census records for William Pierce, from 1900 to 1950, across 49 states, DC, and 2 territories.
: 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 Pierce'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 Pierce 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 Pierce records from the 1900 through 1950 US Federal Census, across 49 states, DC, and 2 territories. 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.