How many Margaret Donnelly census records do you have?

We have 3146 US Census records for Margaret Donnelly, from 1900 to 1950, across 45 states and DC.

What's in a Margaret Donnelly census record?

You'll see Margaret'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 Margaret Donnelly'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 Margaret Donnelly census records free?

Yes. All Margaret Donnelly 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 Margaret Donnelly?

We have Margaret Donnelly records from the 1900 through 1950 US Federal Census, across 45 states and DC. Use the year and state filters to narrow your results.

How do I find Margaret Donnelly 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 Margaret Donnelly?

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.

Margaret Donnelly — US Census Records & Model Tree

We found 3146 free census records for Margaret Donnelly across 6 census years (1900–1950), in 45 states and DC and 380 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Margaret Donnelly Census Records by State & County

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Showing of 3146 records for Margaret Donnelly US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Margaret Donnelly	22	Hudson-County, New Jersey	Massachusetts	Office Work	Daughter
1940	Margaret Donnelly	36	Queens-County, New York	New York	Clerk	Daughter
1940	Margaret M Donnelly	21	Providence-County, Rhode Island	Rhode Island	File Clerk	Daughter
1940	Margaret Donnelly	26	Queens-County, New York	New York	—	Wife
1930	Margaret A Donnelly		Kings, New York	New York	None	Daughter
1940	Margaret Donnelly	53	New-York-County, New York	Ireland	—	Wife
1920	Margaret Donnelly		Philadelphia, Pennsylvania	Ireland	—	Wife
1920	Margaret Donnelly		San Francisco, California	Ireland	—	Wife
1930	Margaret Donnelly		Bronx, New York	Ireland	None	Head
1940	Margaret Donnelly	45	Scott-County, Minnesota	Minnesota	Housewife	Wife
1930	Margaret M Donnelly		Northampton, Pennsylvania	Pennsylvania	Stenographer	Daughter
1920	Margaret Donnelly		Middlesex, Massachusetts	Massachusetts	—	Daughter
1910	Margaret Donnelly		Sonoma, California	Massachusetts	—	Wife
1920	Margaret J Donnelly		Bristol, Massachusetts	Massachusetts	—	Daughter
1930	Margaret Donnelly		Monongalia, West Virginia	Scotland	Electrician	Daughter
1930	Margaret S. Donnelly		Cook, Illinois	Illinois	—	Daughter
1930	Margaret Donnelly		Union, New Jersey	Irish Free State	House Keeper	Wife
1930	Margaret Donnelly		Charleston, South Carolina	South Carolina	Stenographer	Daughter
1920	Margaret Donnelly		Bristol, Massachusetts	Massachusetts	—	Daughter
1940	Margaret Donnelly	60	Charleston-County, South Carolina	South Carolina	—	Wife
1940	Margaret Donnelly	18	Philadelphia-County, Pennsylvania	Pennsylvania	New Worker	Daughter
1930	Margaret Donnelly		Hudson, New Jersey	Irish Free State	—	Wife
1920	Margaret Donnelly		Bristol, Massachusetts	Ireland	—	Wife
1940	Margaret K. Donnelly	15	Washington-County, Kentucky	Kentucky	—	Daughter
1930	Margaret Donnelly		New York, New York	Ireland	—	Head
1940	Margaret Donnelly	35	Hartford-County, Connecticut	New York	—	Wife
1930	Margaret A. Donnelly		Essex, New Jersey	New Jersey	None	Wife
1940	Margaret M Donnelly	46	Sedgwick-County, Colorado	Nebraska	—	Wife
1940	Margaret A Donnelly	11	Sedgwick-County, Colorado	Colorado	—	Daughter
1930	Margaret Donnelly		Jefferson, Kentucky	Kentucky	—	Daughter

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About Margaret Donnelly US Census Records & Model Tree

We've indexed 3146 free, proprietary US Census records for Margaret Donnelly across 1900–1950, covering 45 states and DC: Alabama, Arizona, 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.

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 Margaret 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 3146 US Census records for Margaret Donnelly, from 1900 to 1950, across 45 states and DC.
: You'll see Margaret'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 Margaret Donnelly'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 Margaret Donnelly 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 Margaret Donnelly records from the 1900 through 1950 US Federal Census, across 45 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 Donnelly US Census Records

James Donnelly John Donnelly Mary Donnelly Thomas Donnelly William Donnelly

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