How many John Mcdonough census records do you have?

We have 5704 US Census records for John Mcdonough, from 1900 to 1950, across 48 states and DC.

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

Yes. All John Mcdonough 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 Mcdonough?

We have John Mcdonough 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 Mcdonough 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 Mcdonough?

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 Mcdonough — US Census Records & Model Tree

We found 5704 free census records for John Mcdonough across 6 census years (1900–1950), in 48 states and DC and 610 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Mcdonough Census Records by State & County

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Showing of 5704 records for John Mcdonough US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	John J. Mcdonough		Providence, Rhode Island	Rhode Island	Salesman	Son
1930	John Mcdonough		Denver, Colorado	Colorado	—	Son
1940	John Mcdonough	36	Providence-County, Rhode Island	Rhode Island	Clerk	Head
1940	John T. Mcdonough	51	Providence-County, Rhode Island	Rhode Island	Machinist	Head
1940	John Mcdonough	56	Suffolk-County, Massachusetts	Ireland	Laborer	Head
1930	John H. Mcdonough		Lewis Clark, Montana	Scotland	Farmer	Head
1940	John Mcdonough	58	Allegheny-County, Pennsylvania	Ireland	Laborer	Head
1940	John Mcdonough	58	Hamilton-County, Ohio	Ohio	Conductor	Head
1940	John J. Mcdonough	69	Suffolk-County, Massachusetts	Ireland	—	Head
1940	John Jr. Mcdonough	18	Cook-County, Illinois	Illinois	—	Son
1900	John A. Mcdonough	17	Providence, Rhode Island	Rhode Island	House Carpenter	Son
1940	John Mcdonough	16	Essex-County, New Jersey	New Jersey	—	Son
1940	John J. Mcdonough	22	Suffolk-County, Massachusetts	Massachusetts	Welder	Son
1930	John Mcdonough		Union, New Jersey	New Jersey	Office Boy	Son
1930	John R. Mcdonough		Ramsey, Minnesota	Minnesota	—	Son
1910	John P Mcdonough		Kennebec, Maine	Maine	Cutter	Son
1930	John P. Mcdonough		Essex, New Jersey	New Jersey	None	Son
1930	John J. Mcdonough		Cumberland, Maine	Ireland	Baggage Master	Head
1940	John Mcdonough	17	Washington-County, Minnesota	Minnesota	Student	Son
1920	John Mcdonough		Essex, Massachusetts	Massachusetts	Shoe Maker	Son
1930	John Mcdonough		Cumberland, Maine	Maine	Binder	Son
1930	John M Mcdonough		Union, New Jersey	Ireland	Fireman	Head
1940	John J. Mcdonough	57	Suffolk-County, Massachusetts	Irish Free State	Laborer	Head
1940	John J. Mcdonough	42	Suffolk-County, Massachusetts	Mass.	Fireman	Head
1940	John J. Mcdonough	11	Cuyahoga-County, Ohio	Ohio	—	Son
1930	John Mcdonough		Philadelphia, Pennsylvania	Penna	—	Son
1940	John Mcdonough	15	Cuyahoga-County, Ohio	Ohio	—	Son
1920	John Mcdonough		Worcester, Massachusetts	Massachusetts	—	Son
1940	John Mcdonough	15	Hudson-County, New Jersey	New Jersey	Salvager	Son
1940	John Mcdonough	15	Ramsey-County, Minnesota	Minnesota	—	Son

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About John Mcdonough US Census Records & Model Tree

We've indexed 5704 free, proprietary US Census records for John Mcdonough across 1900–1950, covering 48 states and DC: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, 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 5704 US Census records for John Mcdonough, 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 Mcdonough'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 Mcdonough 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 Mcdonough 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.

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