How many John Mcclain census records do you have?

We have 3449 US Census records for John Mcclain, from 1900 to 1950, across 49 states and DC.

What's in a John Mcclain 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 Mcclain'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 Mcclain census records free?

Yes. All John Mcclain 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 Mcclain?

We have John Mcclain 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 John Mcclain 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 Mcclain?

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 Mcclain — US Census Records & Model Tree

We found 3449 free census records for John Mcclain across 6 census years (1900–1950), in 49 states and DC and 1048 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Mcclain Census Records by State & County

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Showing of 3449 records for John Mcclain US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Mcclain	27	Johnson-County, Arkansas	Arkansas	Laborer	Son
1940	John William Mcclain	28	Johnson-County, Indiana	Indiana	Cabinet Maker	Head
1940	John L Mcclain	30	Cumberland-County, New Jersey	New Jersey	Pile Driver	Son
1940	John T Mcclain	69	Dallas-County, Arkansas	Arkansas	Farmer	Head
1940	John E. Mcclain	85	Jefferson-County, Missouri	Missouri	7	Head
1920	John W Mcclain		Polk, Iowa	Iowa	Salesman	Head
1920	John H. Mcclain		Clay, Tennessee	Tennessee	Farmer	Head
1930	John Jr. Mcclain		Winnebago, Iowa	South Dakota	Laborer	Son
1920	John Mcclain		Philadelphia, Pennsylvania	Pennsylvania	Laborer	Son
1940	John H. Mcclain	58	Winnebago-County, Iowa	Iowa	Farmer	Head
1910	John W. Mcclain		Huntingdon, Pennsylvania	Pennsylvania	Brakeman	Head
1940	John S Mcclain	14	Cumberland-County, Illinois	Illinois	—	Son
1940	John W. Mcclain	14	Maury-County, Tennessee	Tennessee	—	Son
1930	John L Mcclain		Cape Girardeau, Missouri	Missouri	—	Son
1920	John Jr. Mcclain		Davidson, Tennessee	Tennessee	Operator	Son
1940	John W. Mcclain	19	Wilkinson-County, Mississippi	Mississippi	Ccc Laborer	Son
1920	John A Mcclain		Dauphin, Pennsylvania	Pennsylvania	Apprentice	Son
1910	John Mcclain		Lackawanna, Pennsylvania	Pennsylvania	—	Son
1930	John H Mcclain		Franklin, Tennessee	Tennessee	—	Son
1930	John Mcclain		Richland, South Carolina	South Carolina	—	Son
1920	John Mcclain		Lackawanna, Pennsylvania	England	Machinist	Head
1930	John B. Mcclain		Allegheny, Pennsylvania	Pennsylvania	Truck Driver	Son
1940	John Mcclain	22	Baltimore-City-County, Maryland	Pennsylvania	Helper	Son
1910	John C. Mcclain		New Castle, Delaware	Delaware	Farmer	Head
1940	John W. Mcclain	63	Sumter-County, South Carolina	South Carolina	Farmer	Head
1940	John Mcclain	15	Wayne-County, Michigan	Michigan	—	Son
1940	John Mcclain	16	Florence-County, South Carolina	South Carolina	—	Son
1940	John Holbert Mcclain	12	Graves-County, Kentucky	Kentucky	—	Son
1940	John H. Mcclain	16	Poinsett-County, Arkansas	Arkansas	40	Son
1930	John H Mcclain		King, Washington	Washington	—	Son

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About John Mcclain US Census Records & Model Tree

We've indexed 3449 free, proprietary US Census records for John Mcclain across 1900–1950, covering 49 states and DC: 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 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 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 3449 US Census records for John Mcclain, from 1900 to 1950, across 49 states and DC.
: 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 Mcclain'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 Mcclain 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 Mcclain 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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James Mcclain Mary Mcclain William Mcclain

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