How many John Crowley census records do you have?

We have 5128 US Census records for John Crowley, from 1900 to 1950, across 50 states and DC.

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

Yes. All John Crowley 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 Crowley?

We have John Crowley 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 Crowley 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 Crowley?

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 Crowley — US Census Records & Model Tree

We found 5128 free census records for John Crowley across 6 census years (1900–1950), in 50 states and DC and 639 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Crowley 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 5128 records for John Crowley US Census, ranked by Model Tree richness

No records match your filters.

Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	John P. Crowley		Mercer, North Dakota	Minnesota	Farmer	Head
1940	John Crowley	25	Chemung-County, New York	Pennsylvania	Timekeeper	Son
1930	John C. Crowley		Windham, Vermont	Vermont	Proprietor	Son
1930	John J Crowley		Eau Claire, Wisconsin	Wisconsin	Teacher	Son
1940	John Crowley	38	Los-Angeles-County, California	Connecticut	Salesman	Head
1940	John C. Jr. Crowley	38	Hennepin-County, Minnesota	Minnesota	Lawyer	Son
1940	John Crowley	40	Passaic-County, New Jersey	New Jersey	Prop.	Head
1940	John Crowley	34	Androscoggin-County, Maine	Maine	Foreman	Head
1920	John Crowley		Middlesex, Massachusetts	Ireland	Laborer	Head
1940	John Crowley	76	Schenectady-County, New York	Maine	—	Head
1940	John Crowley	77	Buchanan-County, Missouri	Missouri	—	Head
1940	John C. Crowley	77	Hennepin-County, Minnesota	Vermont	Osteopath	Head
1920	John Crowley		Essex, New Jersey	Ireland	—	Head
1920	John H Crowley		Essex, Massachusetts	Ireland	—	Head
1930	John T. Crowley		Norfolk, Massachusetts	England	Retired	Head
1940	John J. Crowley	23	Suffolk-County, Massachusetts	Massachusetts	Porter	Son
1920	John Crowley		Norfolk, Massachusetts	Massachusetts	Stockkeeper	Son
1930	John Crowley		Cook, Illinois	Illinois	—	Son
1940	John Crowley	16	Kings-County, New York	New York	—	Son
1920	John Crowley		Allegheny, Pennsylvania	Pennsylvania	—	Son
1940	John Jr. Crowley	19	Jackson-County, Michigan	Michigan	Meat Cutter	Son
1940	John Crowley	13	Bronx-County, New York	New York	—	Son
1910	John J Crowley		San Francisco, California	Massachusetts	Policeman	Head
1940	John Crowley	14	Clay-County, Minnesota	Minnesota	—	Son
1910	John Crowley		Philadelphia, Pennsylvania	Pennsylvania	—	Son
1940	John V Crowley	21	Kossuth-County, Iowa	Iowa	Farm Laborer	Son
1940	John S. Jr. Crowley	15	Prince-George'S-County, Maryland	Maryland	—	Son
1940	John J. Crowley	13	Suffolk-County, Massachusetts	Massachusetts	—	Son
1910	John Crowley		Duval, Florida	Ireland	Blacksmith	Head
1930	John Crowley		Suffolk, Massachusetts	Ireland	Laborer	Son

Load More John Crowley Census Records

About John Crowley US Census Records & Model Tree

We've indexed 5128 free, proprietary US Census records for John Crowley 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 5128 US Census records for John Crowley, 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 Crowley'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 Crowley 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 Crowley 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 Crowley US Census Records

James Crowley Mary Crowley

All Crowley census records →

Browse More Surnames

Cramer Crane Crawford Cronin Crosby Cross Cullen Cummings Cunningham Curran Curry Curtis

← Back to US Census Records