How many Timothy Sullivan census records do you have?

We have 5846 US Census records for Timothy Sullivan, from 1900 to 1950, across 49 states, DC, and 2 territories.

What's in a Timothy Sullivan census record?

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

Yes. All Timothy 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 Timothy Sullivan?

We have Timothy Sullivan records from the 1900 through 1950 US Federal Census, across 49 states, DC, and 2 territories. Use the year and state filters to narrow your results.

How do I find Timothy 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 Timothy 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.

Timothy Sullivan — US Census Records & Model Tree

We found 5846 free census records for Timothy Sullivan across 6 census years (1900–1950), in 49 states, DC, and 2 territories and 551 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Timothy Sullivan Census Records by State & County

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Showing of 5846 records for Timothy Sullivan US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Timothy J. Sullivan		Newport, Rhode Island	Rhode Island	General Contractor	Head
1930	Timothy J. Sullivan		Suffolk, Massachusetts	Massachusetts	Clerk	Son
1940	Timothy Sullivan	39	Bronx-County, New York	New York	Watchman	Head
1920	Timothy Sullivan		Hillsborough, New Hampshire	New Hampshire	Cigar Maker	Son
1940	Timothy Sullivan	35	Suffolk-County, Massachusetts	Mass	Delivery Driver	Head
1940	Timothy Sullivan	39	Kings-County, New York	New York	Chauffeur	Head
1940	Timothy Sullivan	43	New-York-County, New York	Ireland	Stationary Fireman	Head
1940	Timothy J. Sullivan	43	Gage-County, Nebraska	Iowa	Secretary Of State	Head
1940	Timothy J. Sullivan	44	Hampden-County, Massachusetts	Massachusetts	Salesmanager	Head
1920	Timothy Sullivan		Middlesex, Massachusetts	Massachusetts	Laborer	Son
1930	Timothy Sullivan		Allegheny, Pennsylvania	Wales	Laborer	Head
1940	Timothy Sullivan	50	Suffolk-County, Massachusetts	Ireland	Night Watchman	Head
1940	Timothy Sullivan	48	New-York-County, New York	Ireland	Policeman	Head
1930	Timothy J. Sullivan		Middlesex, Massachusetts	Ireland	Undertaker	Head
1940	Timothy Sullivan	64	Middlesex-County, Massachusetts	Ireland	Stationary Fireman	Husband
1930	Timothy Sullivan		Wayne, Michigan	Ireland	Laborer	Head
1940	Timothy S. Sullivan	68	Albany-County, New York	New York	Contractor Builder	Head
1940	Timothy J. Sullivan	60	Newport-County, Rhode Island	Ireland	Cobbler	Head
1930	Timothy Sullivan		Warren, New Jersey	Pennsylvania	Labor	Head
1940	Timothy J. Sullivan	60	Lancaster-County, Nebraska	Wisconsin	Farmer	Head
1930	Timothy J. Sullivan		Phillips, Colorado	Iowa	Janitor	Head
1930	Timothy J. Sullivan		Middlesex, Massachusetts	Nebraska	Meat Inspector	Head
1930	Timothy Sullivan		Worcester, Massachusetts	Massachusetts	Conductor	Head
1940	Timothy J. Sullivan	51	Hartford-County, Connecticut	Iowa	Engineer	Head
1940	Timothy Sullivan	62	Kings-County, New York	Ireland	U. S. Army, Retired	Head
1940	Timothy F. Sullivan	61	Saline-County, Kansas	Kansas	Assessing	Head
1940	Timothy R. Sullivan	52	Silver-Bow-County, Montana	Colorado	Miner	Head
1920	Timothy F Sullivan		Bristol, Massachusetts	Rhode Island	Policeman	Head
1940	Timothy Sullivan	72	Providence-County, Rhode Island	Rhode Island	Broker	Head
1920	Timothy J Sullivan		Cambria, Pennsylvania	Virginia	Foreman	Head

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About Timothy Sullivan US Census Records & Model Tree

We've indexed 5846 free, proprietary US Census records for Timothy Sullivan across 1900–1950, covering 49 states, DC, and 2 territories: 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, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, U.S. Virgin Islands, 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 Timothy 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 5846 US Census records for Timothy Sullivan, from 1900 to 1950, across 49 states, DC, and 2 territories.
: You'll see Timothy'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 Timothy 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 Timothy 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 Timothy Sullivan records from the 1900 through 1950 US Federal Census, across 49 states, DC, and 2 territories. 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 Nellie Sullivan Patrick Sullivan Richard Sullivan Robert Sullivan Ruth Sullivan Sarah Sullivan Thomas Sullivan William Sullivan

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