How many Agnes Sullivan census records do you have?

We have 3292 US Census records for Agnes Sullivan, from 1900 to 1950, across 50 states and DC.

What's in a Agnes Sullivan census record?

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

Yes. All Agnes 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 Agnes Sullivan?

We have Agnes Sullivan 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 Agnes 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 Agnes 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.

Agnes Sullivan — US Census Records & Model Tree

We found 3292 free census records for Agnes Sullivan across 6 census years (1900–1950), in 50 states and DC and 480 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Agnes Sullivan Census Records by State & County

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Showing of 3292 records for Agnes Sullivan US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Agnes E. Sullivan	26	Sagadahoc-County, Maine	Maine	Clerk	Daughter
1930	Agnes Sullivan		Newport, Rhode Island	Rhode Island	Teacher	Daughter
1940	Agnes E. Sullivan	47	Essex-County, Massachusetts	Massachusetts	—	Wife
1930	Agnes Sullivan		Suffolk, Massachusetts	Massachusetts	Social Worker	Daughter
1930	Agnes Sullivan		Middlesex, Massachusetts	Massachusetts	—	Daughter
1930	Agnes Sullivan		Kings, New York	New York	Bookkeeper	Daughter
1940	Agnes B Sullivan	38	Worcester-County, Massachusetts	Scotland	—	Wife
1930	Agnes Sullivan		Providence, Rhode Island	Rhode Island	None	Wife
1940	Agnes Sullivan	72	Cook-County, Illinois	Ireland	—	Head
1940	Agnes Sullivan	47	San-Francisco-County, California	California	—	Wife
1930	Agnes Sullivan		Bronx, New York	Ireland	—	Wife
1930	Agnes A. Sullivan		Montgomery, Maryland	Maryland	—	Wife
1940	Agnes Sullivan	20	Kings-County, New York	New York	—	Daughter
1920	Agnes Sullivan		Worcester, Massachusetts	Massachusetts	Winder	Daughter
1940	Agnes C. Sullivan	18	Middlesex-County, Massachusetts	Massachusetts	—	Daughter
1930	Agnes J. Sullivan		Ashe, North Carolina	North Carolina	—	Daughter
1920	Agnes Sullivan		Queens, New York	New York	None	Daughter
1920	Agnes Sullivan		Wayne, Michigan	Michigan	—	Daughter
1940	Agnes Sullivan	10	Erie-County, New York	New York	—	Daughter
1930	Agnes E. Sullivan		Providence, Rhode Island	Rhode Island	Molder	Wife
1940	Agnes S Sullivan	36	Chemung-County, New York	New York	—	Wife
1920	Agnes Sullivan		Philadelphia, Pennsylvania	Pennsylvania	—	Daughter
1920	Agnes Sullivan		Suffolk, Massachusetts	Massachusetts	—	Daughter
1920	Agnes Sullivan		Middlesex, Massachusetts	Massachusetts	—	Daughter
1920	Agnes Sullivan		Suffolk, Massachusetts	Massachusetts	Box Maker	Daughter
1930	Agnes Son Sullivan		Cook, Illinois	Illinois	—	Son
1920	Agnes Sullivan		Middlesex, Massachusetts	Massachusetts	—	Daughter
1930	Agnes Sullivan		Marlboro, South Carolina	South Carolina	None	Daughter
1940	Agnes Sullivan	40	Lewis-County, New York	New York	—	Wife
1940	Agnes Sullivan	43	Kings-County, New York	Scotland	—	Wife

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About Agnes Sullivan US Census Records & Model Tree

We've indexed 3292 free, proprietary US Census records for Agnes Sullivan 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 Agnes 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 3292 US Census records for Agnes Sullivan, from 1900 to 1950, across 50 states and DC.
: You'll see Agnes'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 Agnes 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 Agnes 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 Agnes Sullivan 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 Sullivan US Census Records

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