How many Mary Dugan census records do you have?

We have 4613 US Census records for Mary Dugan, from 1900 to 1950, across 48 states and DC.

What's in a Mary Dugan census record?

You'll see Mary'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 Mary Dugan'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 Mary Dugan census records free?

Yes. All Mary Dugan 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 Mary Dugan?

We have Mary Dugan 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 Mary Dugan 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 Mary Dugan?

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.

Mary Dugan — US Census Records & Model Tree

We found 4613 free census records for Mary Dugan across 6 census years (1900–1950), in 48 states and DC and 628 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Mary Dugan 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 4613 records for Mary Dugan US Census, ranked by Model Tree richness

No records match your filters.

Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Mary J Dugan		Providence, Rhode Island	Rhode Island	Press Worker	Daughter
1940	Mary Dugan	32	Allegheny-County, Pennsylvania	Pennsylvania	—	Daughter
1940	Mary Katherine Dugan	25	Cochise-County, Arizona	Arizona	Bookkeeper	Daughter
1940	Mary Dugan	82	Providence-County, Rhode Island	Rhode Island	—	Head
1940	Mary Dugan	54	New-Castle-County, Delaware	Delaware	—	Wife
1920	Mary A. Dugan		Kings, New York	Rhode Island	—	Head
1940	Mary Dugan	73	Philadelphia-County, Pennsylvania	IRELAND	—	Head
1920	Mary Dugan		Philadelphia, Pennsylvania	Ireland	—	Wife
1930	Mary J. Dugan		Providence, Rhode Island	Rhode Island	—	Head
1930	Mary Dugan		Union, New Jersey	New Jersey	None	Daughter
1920	Mary A. Dugan		Norfolk, Massachusetts	Massachusetts	—	Daughter
1940	Mary Dugan	13	Union-County, New Jersey	New Jersey	—	Daughter
1940	Mary Dugan	20	Bucks-County, Pennsylvania	Pennsylvania	Soap Packer	Daughter
1940	Mary Dugan	52	Union-County, New Jersey	New Jersey	—	Wife
1940	Mary Dugan	15	Camden-County, New Jersey	New Jersey	—	Daughter
1910	Mary Dugan		Strafford, New Hampshire	New Hampshire	—	Wife
1930	Mary A. Dugan		Suffolk, Massachusetts	Massachusetts	Weigher	Daughter
1930	Mary H. Dugan		Cass, Illinois	Illinois	School Teacher	Daughter
1940	Mary Dugan	53	Cook-County, Illinois	Nebraska	—	Wife
1940	Mary Dugan	17	Dallas-County, Texas	Georgia	Bookkeeper	Daughter
1940	Mary Dugan	17	Milwaukee-County, Wisconsin	Wisconsin	—	Daughter
1910	Mary Dugan		Providence, Rhode Island	Rhode Island	Shoe Maker	Daughter
1910	Mary L Dugan		Providence, Rhode Island	Rhode Island	—	Wife
1940	Mary Dugan	49	Cook-County, Illinois	Irish Free State	—	Wife
1910	Mary F. Dugan		Dubois, Indiana	Kentucky	—	Wife
1930	Mary Dugan		Essex, New Jersey	New Jersey	—	Daughter
1940	Mary Jane Dugan	12	Shelby-County, Tennessee	Tennessee	—	Daughter
1920	Mary Dugan		Philadelphia, Pennsylvania	England	—	Wife
1940	Mary M. Dugan	13	Clark-County, Ohio	Ohio	—	Daughter
1930	Mary Lou Dugan		Escambia, Florida	Florida	None	Daughter

Load More Mary Dugan Census Records

About Mary Dugan US Census Records & Model Tree

We've indexed 4613 free, proprietary US Census records for Mary Dugan across 1900–1950, covering 48 states and DC: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, 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 Mary 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 4613 US Census records for Mary Dugan, from 1900 to 1950, across 48 states and DC.
: You'll see Mary'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 Mary Dugan'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 Mary Dugan 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 Mary Dugan 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 Dugan US Census Records

James Dugan John Dugan

All Dugan census records →

Browse More Surnames

Downey Doyle Drake Driscoll Dudley Duffy Duggan Duke Duncan Dunlap Dunn Durham

← Back to US Census Records