How many John Cronin census records do you have?

We have 4396 US Census records for John Cronin, from 1900 to 1950, across 48 states and DC.

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

Yes. All John Cronin 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 Cronin?

We have John Cronin records from the 1900 through 1950 US Federal Census, across 48 states and DC. Use the year and state filters to narrow your results.

How do I find John Cronin 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 Cronin?

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 Cronin — US Census Records & Model Tree

We found 4396 free census records for John Cronin across 6 census years (1900–1950), in 48 states and DC and 479 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Cronin Census Records by State & County

Records per state:

Census Record Search

First Name

Middle Name

Last Name (Required)

Census Year

State

Birth Year

Year Range

Birthplace

Age From

Age To

Exact match: Name Location Year

Alternate First Names (comma-separated)

Alternate Last Names (comma-separated)

County

Sex

Marital Status

Race

Relationship to Head

Occupation

Census Page ID

Family Members (in same household)

Search Records

Showing of 4396 records for John Cronin US Census, ranked by Model Tree richness

No records match your filters.

Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Cronin	25	Suffolk-County, Massachusetts	Massachusetts	Cabinet Maker	Son
1940	John Cronin	41	New-York-County, New York	New York	Longshore	Head
1940	John Cronin	69	Cook-County, Illinois	Wisconsin	Watchman	Head
1920	John J. Cronin		Middlesex, Massachusetts	Ireland	Laborer	Head
1940	John Cronin	70	Cook-County, Illinois	Ireland	Conductor	Head
1920	John H. Cronin		Suffolk, Massachusetts	Ireland	Proprietor	Head
1940	John Cronin	67	Middlesex-County, Massachusetts	Ireland	—	Head
1940	John A. Cronin	74	Suffolk-County, Massachusetts	England	—	Head
1940	John L. Cronin	11	Orleans-County, Louisiana	Louisiana	—	Son
1940	John A Cronin	57	Suffolk-County, Massachusetts	Mass	Merchant	Head
1920	John Cronin		Middlesex, Massachusetts	Ireland	Laborer	Head
1920	John Cronin		Providence, Rhode Island	Rhode Island	—	Son
1940	John Cronin	10	New-York-County, New York	New York	—	Son
1940	John F. Cronin	20	Suffolk-County, Massachusetts	Massachusetts	Helper - Truck	Son
1940	John Cronin	18	Middlesex-County, Massachusetts	Massachusetts	—	Son
1940	John J. Cronin	13	Middlesex-County, Massachusetts	Massachusetts	—	Son
1940	John S. Cronin	54	Middlesex-County, Massachusetts	Massachusetts	Laborer	Head
1940	John J. Cronin	27	Middlesex-County, Massachusetts	Massachusetts	Baggage-Man	Son
1940	John Cronin	13	Philadelphia-County, Pennsylvania	Pennsylvania	—	Son
1940	John Cronin	11	Worcester-County, Massachusetts	Massachusetts	—	Son
1920	John Cronin		Alameda, California	Ireland	Motorman	Head
1940	John Cronin	12	Queens-County, New York	New York	—	Son
1940	John Cronin	18	Chemung-County, New York	New York	—	Son
1910	John C Cronin		Essex, Massachusetts	Ireland	Slugger	Head
1940	John Cronin	44	Bronx-County, New York	New York	Steamfitter	Head
1930	John Jr. Cronin		Suffolk, Massachusetts	Massachusetts	—	Son
1910	John Cronin		Middlesex, Massachusetts	Ireland	Teamster	Head
1910	John Cronin		Ransom, North Dakota	England	Janitor	Head
1940	John E. Cronin	43	Kings-County, New York	New York	Clerk	Head
1940	John Cronin	11	Bronx-County, New York	New York	—	Son

Load More John Cronin Census Records

About John Cronin US Census Records & Model Tree

We've indexed 4396 free, proprietary US Census records for John Cronin across 1900–1950, covering 48 states and DC: Alabama, 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 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 4396 US Census records for John Cronin, from 1900 to 1950, across 48 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 Cronin'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 Cronin 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 Cronin records from the 1900 through 1950 US Federal Census, across 48 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 Cronin US Census Records

Mary Cronin

All Cronin census records →

Browse More Surnames

Cox Coyle Craig Cramer Crane Crawford Crosby Cross Crowley Cullen Cummings Cunningham

← Back to US Census Records