How many John Carroll census records do you have?

We have 13664 US Census records for John Carroll, from 1900 to 1950, across 50 states and DC.

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

Yes. All John Carroll 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 Carroll?

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

How do I find John Carroll 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 Carroll?

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 Carroll — US Census Records & Model Tree

We found 13664 free census records for John Carroll across 6 census years (1900–1950), in 50 states and DC and 1520 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Carroll Census Records by State & County

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Showing of 13664 records for John Carroll US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	John H. Jr. Carroll		Baldwin, Alabama	Alabama	—	Son
1940	John B. Carroll	31	Marion-County, Indiana	Indiana	Lithographer	Son
1940	John Jr. Carroll	23	Kent-County, Rhode Island	Rhode Island	Range Man	Son
1920	John Carroll		Marion, Indiana	Indiana	—	Son
1940	John H. Carroll	23	Sheridan-County, Montana	Montana	Operator	Son
1940	John Carroll	35	Union-County, New Jersey	New Jersey	Bookkeeper	Son
1930	John Carroll		Calumet, Wisconsin	Wisconsin	Working	Son
1940	John Carroll	31	Luzerne-County, Pennsylvania	Pennsylvania	New Worker	Son
1940	John M. Carroll	27	Suffolk-County, Massachusetts	Massachusetts	Real Estate Assistant	Son
1940	John Carroll	20	Marion-County, Indiana	Indiana	Delivery Boy	Son
1930	John J. Carroll		Denver, Colorado	Colorado	Apprentice	Son
1920	John Carroll		Middlesex, Massachusetts	Massachusetts	Stenographer	Son
1920	John W Carroll		Wayne, Ohio	Ohio	None	Son
1940	John Carroll	24	Ramsey-County, Minnesota	Minnesota	Deliveryman	Head
1940	John Carroll	24	Middlesex-County, Massachusetts	Massachusetts	Camera Operator	Son
1940	John Carroll	32	Jefferson-County, Kentucky	Kentucky	City Hosp.	Head
1930	John N. Carroll		Duplin, North Carolina	North Carolina	Farming	Head
1920	John Carroll		Freestone, Texas	Texas	Farmer	Head
1940	John W. Carroll	59	Gasconade-County, Missouri	Missouri	Farmer	Head
1940	John E. Carroll	57	Frederick-County, Maryland	Maryland	Laborer	Head
1940	John S. Carroll	49	Worcester-County, Massachusetts	Vermont	Switchman	Head
1940	John Carroll	42	Cook-County, Illinois	Illinois	Deputy County Clerk	Head
1940	John Carroll	51	Kent-County, Rhode Island	England	Calender Man	Head
1920	John Carroll		Bronx, New York	Ireland	Fireman	Head
1940	John W. Carroll	50	Clarke-County, Mississippi	Mississippi	Farmer	Head
1920	John O. Carroll		Shelby, Illinois	Illinois	Farmer	Head
1940	John H Carroll	59	Hart-County, Georgia	Georgia	Farmer	Head
1920	John Carroll		New York, New York	Ireland	None	Head
1920	John Carroll		Suffolk, Massachusetts	Ireland	Sergeant	Head
1940	John Carroll	71	Calumet-County, Wisconsin	Wisconsin	Farmer	Head

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About John Carroll US Census Records & Model Tree

We've indexed 13664 free, proprietary US Census records for John Carroll across 1900–1950, covering 50 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 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 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 13664 US Census records for John Carroll, from 1900 to 1950, across 50 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 Carroll'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 Carroll 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 Carroll records from the 1900 through 1950 US Federal Census, across 50 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.

Other Carroll US Census Records

Catherine Carroll Charles Carroll Edward Carroll Elizabeth Carroll George Carroll James Carroll Joseph Carroll Margaret Carroll Mary Carroll Robert Carroll Thomas Carroll William Carroll

All Carroll census records →

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