How many Catherine Sullivan census records do you have?

We have 10555 US Census records for Catherine Sullivan, from 1900 to 1950, across 49 states and DC.

What's in a Catherine Sullivan census record?

You'll see Catherine'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 Catherine Sullivan'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 Catherine Sullivan census records free?

Yes. All Catherine Sullivan 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 Catherine Sullivan?

We have Catherine Sullivan records from the 1900 through 1950 US Federal Census, across 49 states and DC. Use the year and state filters to narrow your results.

How do I find Catherine Sullivan 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 Catherine Sullivan?

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.

Catherine Sullivan — US Census Records & Model Tree

We found 10555 free census records for Catherine Sullivan across 6 census years (1900–1950), in 49 states and DC and 718 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Catherine Sullivan Census Records by State & County

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Showing of 10555 records for Catherine Sullivan US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Catherine Sullivan		Philadelphia, Pennsylvania	Pennsylvania	—	Daughter
1940	Catherine Sullivan	21	Dallas-County, Iowa	Iowa	35	Daughter
1930	Catherine Sullivan		Hamilton, Ohio	Ohio	Laborer	Daughter
1920	Catherine Sullivan		Providence, Rhode Island	Rhode Island	—	Daughter
1920	Catherine Sullivan		Allegheny, Pennsylvania	Pennsylvania	—	Daughter
1920	Catherine Sullivan		Palo Alto, Iowa	Iowa	Operator	Daughter
1920	Catherine A. Sullivan		Newport, Rhode Island	Rhode Island	Stenographer	Daughter
1940	Catherine Sullivan	26	Jefferson-County, Kentucky	Kentucky	Clerk	Daughter
1920	Catherine C Sullivan		Cook, Illinois	Illinois	Clerk	Daughter
1920	Catherine Sullivan		Providence, Rhode Island	Rhode Island	Solderer	Daughter
1940	Catherine Sullivan	25	Cook-County, Illinois	Illinois	—	Daughter
1940	Catherine M. Sullivan	48	Hampden-County, Massachusetts	Connecticut	Paper Sorter	Daughter
1940	Catherine E. Sullivan	29	Cook-County, Illinois	Illinois	Typist	Daughter
1930	Catherine Sullivan		Cook, Illinois	Illinois	Clerk	Daughter
1940	Catherine Sullivan	46	Cook-County, Illinois	Illinois	—	Daughter
1920	Catherine Sullivan		Providence, Rhode Island	Rhode Island	—	Daughter
1940	Catherine Sullivan	32	Providence-County, Rhode Island	Rhode Island	Bookkeeper	Daughter
1940	Catherine Sullivan	57	Queens-County, New York	Ireland	—	Wife
1930	Catherine Sullivan		Essex, Massachusetts	New Hampshire	—	Head
1940	Catherine Sullivan	54	Queens-County, New York	Ireland	—	Wife
1930	Catherine M. Sullivan		Cook, Illinois	Ireland	1905	Wife
1940	Catherine Sullivan	70	Worcester-County, Massachusetts	Ireland	—	Wife
1920	Catherine Sullivan		Dubuque, Iowa	Maine	—	Head
1940	Catherine Sullivan	44	Rapides-County, Louisiana	Alabama	—	Wife
1940	Catherine Sullivan	58	Allegheny-County, Pennsylvania	Pennsylvania	—	Head
1940	Catherine Sullivan	52	San-Francisco-County, California	Ireland	—	Head
1930	Catherine Sullivan		Middlesex, Massachusetts	Ireland	Saleswoman	Head
1910	Catherine Sullivan		New York, New York	New York	—	Daughter
1920	Catherine Sullivan		Hudson, New Jersey	New Jersey	None	Daughter
1930	Catherine Sullivan		San Francisco, California	California	—	Daughter

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About Catherine Sullivan US Census Records & Model Tree

We've indexed 10555 free, proprietary US Census records for Catherine Sullivan across 1900–1950, covering 49 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, 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 Catherine 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 10555 US Census records for Catherine Sullivan, from 1900 to 1950, across 49 states and DC.
: You'll see Catherine'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 Catherine Sullivan'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 Catherine Sullivan 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 Catherine Sullivan records from the 1900 through 1950 US Federal Census, across 49 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 Sullivan US Census Records

Agnes Sullivan Alice Sullivan Anna Sullivan Annie Sullivan Arthur Sullivan Charles Sullivan Cornelius Sullivan Daniel Sullivan Dennis Sullivan Dorothy Sullivan Edward Sullivan Elizabeth Sullivan Ellen Sullivan Eugene Sullivan Florence Sullivan Francis Sullivan Frank Sullivan George Sullivan Helen Sullivan James Sullivan Jeremiah Sullivan John Sullivan Joseph Sullivan Julia Sullivan Katherine Sullivan Margaret Sullivan Mary Sullivan Michael Sullivan Nellie Sullivan Patrick Sullivan Richard Sullivan Robert Sullivan Ruth Sullivan Sarah Sullivan Thomas Sullivan Timothy Sullivan William Sullivan

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