How many Robert Armstrong census records do you have?

We have 7321 US Census records for Robert Armstrong, from 1900 to 1950, across 50 states, DC, and 1 territory.

What's in a Robert Armstrong census record?

You'll see Robert'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 Robert Armstrong'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 Robert Armstrong census records free?

Yes. All Robert Armstrong 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 Robert Armstrong?

We have Robert Armstrong records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find Robert Armstrong 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 Robert Armstrong?

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.

Robert Armstrong — US Census Records & Model Tree

We found 7321 free census records for Robert Armstrong across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 1399 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

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Showing of 7321 records for Robert Armstrong US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Robert Armstrong	26	Orleans-County, Louisiana	Louisiana	Laborer	Son
1940	Robert Armstrong	21	Blue-Earth-County, Minnesota	Minnesota	Farm Laborer	Son
1940	Robert B. Armstrong	24	Douglas-County, Illinois	Illinois	Farmer	Son
1940	Robert Armstrong	29	St.-Clair-County, Michigan	Michigan	Farmer	Son
1940	Robert M. Armstrong	30	Marion-County, Indiana	Indiana	Salesman	Son
1940	Robert Armstrong	32	Maury-County, Tennessee	Tennessee	Farmer	Son
1930	Robert W. Armstrong		Warren, Pennsylvania	Pennsylvania	Salesman	Son
1940	Robert Armstrong	24	Cuyahoga-County, Ohio	Ohio	Plater	Son
1940	Robert Armstrong	26	Gaston-County, North Carolina	North Carolina	Laborer	Son
1940	Robert Armstrong	23	Fayette-County, West Virginia	West Virginia	Coal Loader	Son
1940	Robert B Armstrong	44	Ashtabula-County, Ohio	Pennsylvania	—	Son
1940	Robert Armstrong	42	Cherokee-County, Oklahoma	Mississippi	Laborer	Head
1920	Robert Armstrong		Cuyahoga, Ohio	Ohio	Structural Eng.	Head
1940	Robert Armstrong	22	Wapello-County, Iowa	Iowa	—	Son
1940	Robert Armstrong	26	Wayne-County, Indiana	Indiana	Music Teacher	Son
1940	Robert J. Armstrong	28	Marion-County, Indiana	Indiana	Maintenance	Head
1940	Robert Armstrong	32	Laurens-County, South Carolina	South Carolina	Farmer	Head
1940	Robert C. Armstrong	29	Allegheny-County, Pennsylvania	Pennsylvania	Clerk	Son
1930	Robert S. Armstrong		Winnebago, Illinois	Illinois	—	Head
1940	Robert Armstrong	46	Lucas-County, Ohio	Mississippi	Water Line Repair	Head
1920	Robert Armstrong		Schuyler, Illinois	Illinois	Farmer	Head
1940	Robert Armstrong	60	Kings-County, New York	Ireland	Painter	Head
1940	Robert Armstrong	57	Stark-County, Illinois	Illinois	Farmer	Head
1940	Robert Armstrong	65	St.-Clair-County, Michigan	Michigan	Woolen Mill	Head
1940	Robert J Sr Armstrong	55	Gaston-County, North Carolina	North Carolina	Farmer	Head
1930	Robert C. Armstrong		Hawkins, Tennessee	Tennessee	Farmer	Head
1920	Robert M Armstrong		Champaign, Illinois	Ohio	—	Head
1940	Robert Armstrong	62	Salt-Lake-County, Utah	Australia	Salesman	Head
1940	Robert A Armstrong	67	Franklin-County, Ohio	Ohio	Painter Contractor	Head
1920	Robert Armstrong		Fulton, Georgia	New York	Proprietor	Head

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About Robert Armstrong US Census Records & Model Tree

We've indexed 7321 free, proprietary US Census records for Robert Armstrong across 1900–1950, covering 50 states, DC, and 1 territory: 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, 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 Robert 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 7321 US Census records for Robert Armstrong, from 1900 to 1950, across 50 states, DC, and 1 territory.
: You'll see Robert'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 Robert Armstrong'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 Robert Armstrong 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 Robert Armstrong records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. 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 Armstrong US Census Records

Alice Armstrong Charles Armstrong Elizabeth Armstrong Frank Armstrong George Armstrong James Armstrong John Armstrong Margaret Armstrong Mary Armstrong Thomas Armstrong William Armstrong

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