How many William Marsh census records do you have?

We have 5034 US Census records for William Marsh, from 1900 to 1950, across 50 states, DC, and 1 territory.

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

Yes. All William Marsh 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 Marsh?

We have William Marsh records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find William Marsh 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 Marsh?

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 Marsh — US Census Records & Model Tree

We found 5034 free census records for William Marsh across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 1171 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

William Marsh Census Records by State & County

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Showing of 5034 records for William Marsh US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	William R. Marsh	33	Washtenaw-County, Michigan	Ohio	Laborer	Head
1920	William A Marsh		Belknap, New Hampshire	New Hampshire	Farmer	Son
1930	William Marsh		Suffolk, Massachusetts	England	Mechanist	Head
1910	William O Marsh		Jefferson, Alabama	Alabama	Laborer	Son
1930	William A Marsh		Mesa, Colorado	California	Real Estate Agt	Head
1940	William H Marsh	14	Troup-County, Georgia	Georgia	—	Son
1910	William Marsh		Burnett, Wisconsin	Wisconsin	Farmer	Head
1940	William L. Marsh	15	Clark-County, Arkansas	Arkansas	—	Son
1910	William Marsh		Escambia, Florida	Florida	Dealer	Son
1940	William H. Marsh	77	Fauquier-County, Virginia	Maryland	Retired Minister	Head
1940	William S Marsh	37	Lexington-County, South Carolina	South Carolina	Boiler Helper	Head
1940	William Marsh	21	San-Mateo-County, California	Washington D.C.	Clerk	Son
1920	William A. Marsh		Middlesex, Massachusetts	Massachusetts	—	Son
1920	William Jr. Marsh		Douglas, Nebraska	Nebraska	None	Son
1940	William M Marsh	64	Sumter-County, Florida	Florida	Farm Owner	Head
1940	William Marsh	46	Wadena-County, Minnesota	Nebraska	Farmer	Head
1910	William Marsh		Essex, New Jersey	New Jersey	—	Son
1940	William H Marsh	47	Milwaukee-County, Wisconsin	England	Chauffeur	Head
1910	William H Marsh		Union, New Jersey	New York	Broker	Head
1930	William A. Jr. Marsh		Westmoreland, Pennsylvania	Pennsylvania	—	Son
1940	William G. Marsh	13	Will-County, Illinois	Illinois	—	Son
1930	William D Marsh		Uinta, Wyoming	Wyoming	—	Son
1940	William P. Marsh	37	Jackson-County, Missouri	Arkansas	Bookkeeper	Head
1930	William H Marsh		Uinta, Wyoming	Utah	Stock Raiser	Head
1920	William Marsh		Union, New Jersey	New Jersey	Carpenter	Head
1930	William M. Marsh		Smith, Kansas	Kansas	Farmer	Son
1910	William T. Marsh		White, Arkansas	Arkansas	Farm Laborer	Son
1940	William Marsh	44	Union-County, New Jersey	England	Machinist	Head
1920	William A Marsh		Hempstead, Arkansas	Arkansas	Farmer	Head
1940	William Marsh	28	Lasalle-County, Louisiana	Louisiana	Laborer	Head

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About William Marsh US Census Records & Model Tree

We've indexed 5034 free, proprietary US Census records for William Marsh across 1900–1950, covering 50 states, DC, and 1 territory: 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, U.S. Virgin Islands, 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 5034 US Census records for William Marsh, from 1900 to 1950, across 50 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 Marsh'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 Marsh 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 Marsh records from the 1900 through 1950 US Federal Census, across 50 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.