How many John Clark census records do you have?

We have 39186 US Census records for John Clark, from 1900 to 1950, across 50 states, DC, and 2 territories.

What's in a John Clark census record?

You'll see John'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 John Clark'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 John Clark census records free?

Yes. All John Clark 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 John Clark?

We have John Clark records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 territories. Use the year and state filters to narrow your results.

How do I find John Clark 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 John Clark?

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.

John Clark — US Census Records & Model Tree

We found 39186 free census records for John Clark across 6 census years (1900–1950), in 50 states, DC, and 2 territories and 2631 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Clark Census Records by State & County

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Showing of 39186 records for John Clark US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Clark	24	Gloucester-County, New Jersey	New Jersey	Bus Driver	Son
1940	John Clark	25	St.-Mary-County, Louisiana	Louisiana	Deck-Hand	Son
1940	John M. Clark	40	Stanly-County, North Carolina	North Carolina	Operator	Head
1930	John Clark		Dodge, Georgia	Georgia	Carpenter	Head
1940	John Clark	25	Middlesex-County, New Jersey	New Jersey	—	Son
1940	John Clark	29	Charleston-County, South Carolina	South Carolina	Operator	Son
1930	John H Clark		Los Angeles, California	California	Repairing	Son
1930	John W. Clark		Jackson, Missouri	Missouri	Assistant	Son
1930	John B Clark		King, Washington	Washington	Farmer	Head
1930	John W Clark		Yakima, Washington	Nebraska	—	Son
1940	John B Clark	42	New-York-County, New York	New Jersey	Executive	Head
1940	John E Clark	28	Berkshire-County, Massachusetts	Massachusetts	Baker	Head
1940	John B. Clark	32	Rock-Island-County, Illinois	Wisconsin	—	Son
1920	John L Clark		Franklin, Arkansas	Arkansas	Farmer	Head
1930	John Clark		Polk, Iowa	Missouri	Electrician	Head
1940	John P Clark	34	Navajo-County, Arizona	New Mexico	Judge	Head
1940	John A. Clark	41	Morris-County, New Jersey	New Jersey	Manager	Head
1930	John E. Clark		Clark, Ohio	Ohio	Technician	Head
1930	John Clark		Ralls, Missouri	Missouri	Farmer	Head
1940	John Clark	60	Kemper-County, Mississippi	Mississippi	Farm Operator	Head
1940	John W. Clark	73	Jewell-County, Kansas	Tennessee	—	Head
1940	John W Clark	48	Weber-County, Utah	Utah	Farmer	Head
1940	John W. Clark	55	Alamance-County, North Carolina	North Carolina	Tenant Farmer	Head
1940	John T. Clark	41	Wayne-County, Indiana	Kentucky	Sander	Head
1910	John Clark		Cook, Illinois	Ireland	Chauffeur	Head
1940	John Clark	37	Baltimore-City-County, Maryland	Maryland	Crane Operator	Head
1940	John L. Clark	51	Clackamas-County, Oregon	Nebraska	Farmer	Head
1940	John C. Clark	53	Cassia-County, Idaho	Idaho	Salesman	Head
1930	John H. Clark		Houston, Georgia	Georgia	Merchant	Head
1930	John M. Clark		Cumberland, New Jersey	New Jersey	None	Head

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About John Clark US Census Records & Model Tree

We've indexed 39186 free, proprietary US Census records for John Clark across 1900–1950, covering 50 states, DC, and 2 territories: Alabama, Alaska, 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, 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 John 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 39186 US Census records for John Clark, from 1900 to 1950, across 50 states, DC, and 2 territories.
: You'll see John'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 John Clark'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 John Clark 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 John Clark records from the 1900 through 1950 US Federal Census, across 50 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.