How many Nellie Sullivan census records do you have?

We have 5205 US Census records for Nellie Sullivan, from 1900 to 1950, across 48 states and DC.

What's in a Nellie Sullivan census record?

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

Yes. All Nellie 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 Nellie Sullivan?

We have Nellie Sullivan 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 Nellie 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 Nellie 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.

Nellie Sullivan — US Census Records & Model Tree

We found 5205 free census records for Nellie Sullivan across 6 census years (1900–1950), in 48 states and DC and 790 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Nellie Sullivan Census Records by State & County

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Showing of 5205 records for Nellie Sullivan US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Nellie Sullivan	41	Stevens-County, Minnesota	Minnesota	—	Daughter
1920	Nellie Sullivan		Middlesex, Massachusetts	Massachusetts	Spinner	Daughter
1920	Nellie Sullivan		San Francisco, California	California	Clerk	Daughter
1920	Nellie Sullivan		New York, New York	Ireland	—	Head
1940	Nellie G. Sullivan	66	Cumberland-County, Maine	Maine	—	Head
1940	Nellie Sullivan	44	New-York-County, New York	Ireland	—	Wife
1940	Nellie Sullivan	47	Rock-Island-County, Illinois	Illinois	—	Wife
1930	Nellie Sullivan		Bronx, New York	Ireland	—	Head
1940	Nellie Sullivan	51	Hampden-County, Massachusetts	Massachusetts	—	Wife
1930	Nellie Sullivan		Queens, New York	New York	—	Wife
1920	Nellie Sullivan		Kings, New York	Ireland	—	Wife
1940	Nellie Sullivan	60	Bronx-County, New York	Ireland	—	Wife
1930	Nellie Sullivan		Hampden, Massachusetts	Ireland	—	Wife
1930	Nellie G. Sullivan		Cook, Illinois	Illinois	Order Clerk	Head
1920	Nellie Sullivan		Providence, Rhode Island	Ireland	Laundress	Head
1910	Nellie Sullivan		Fresno, California	California	—	Wife
1920	Nellie Sullivan		Stafford, Virginia	Virginia	—	Daughter
1930	Nellie Sullivan		Wayne, Michigan	Ireland	—	Wife
1910	Nellie Sullivan		Cook, Illinois	Ireland	—	Wife
1910	Nellie E. Sullivan		Carver, Minnesota	Minnesota	—	Daughter
1940	Nellie Sullivan	47	Guadalupe-County, New Mexico	Texas	—	Wife
1910	Nellie Sullivan		Cook, Illinois	Illinois	—	Daughter
1920	Nellie E Sullivan		Northampton, Pennsylvania	New York	Teacher	Daughter
1930	Nellie A. Sullivan		Silver Bow, Montana	Ireland	Cook	Daughter
1920	Nellie M. Sullivan		Duplin, North Carolina	North Carolina	—	Daughter
1920	Nellie Sullivan		Baltimore, Maryland	Maryland	Machinist	Wife
1930	Nellie Sullivan		Muhlenberg, Kentucky	Kentucky	—	Daughter
1920	Nellie Sullivan		Marion, Indiana	Indiana	None	Wife
1920	Nellie Sullivan		Philadelphia, Pennsylvania	Pennsylvania	School	Daughter
1910	Nellie A. Sullivan		Hudson, New Jersey	Pennsylvania	—	Wife

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About Nellie Sullivan US Census Records & Model Tree

We've indexed 5205 free, proprietary US Census records for Nellie Sullivan across 1900–1950, covering 48 states and DC: Alabama, 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 Nellie 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 5205 US Census records for Nellie Sullivan, from 1900 to 1950, across 48 states and DC.
: You'll see Nellie'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 Nellie 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 Nellie 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 Nellie Sullivan 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 Sullivan US Census Records

Agnes Sullivan Alice Sullivan Anna Sullivan Annie Sullivan Arthur Sullivan Catherine 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 Patrick Sullivan Richard Sullivan Robert Sullivan Ruth Sullivan Sarah Sullivan Thomas Sullivan Timothy Sullivan William Sullivan

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