How many Robert Blair census records do you have?

We have 4202 US Census records for Robert Blair, from 1900 to 1950, across 50 states, DC, and 1 territory.

What's in a Robert Blair 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 Blair'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 Blair census records free?

Yes. All Robert Blair 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 Blair?

We have Robert Blair 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 Blair 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 Blair?

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 Blair — US Census Records & Model Tree

We found 4202 free census records for Robert Blair across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 1065 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Robert Blair Census Records by State & County

Records per state:

Census Record Search

First Name

Middle Name

Last Name (Required)

Census Year

State

Birth Year

Year Range

Birthplace

Age From

Age To

Exact match: Name Location Year

Alternate First Names (comma-separated)

Alternate Last Names (comma-separated)

County

Sex

Marital Status

Race

Relationship to Head

Occupation

Census Page ID

Family Members (in same household)

Search Records

Showing of 4202 records for Robert Blair US Census, ranked by Model Tree richness

No records match your filters.

Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Robert H Blair	22	Middlesex-County, Massachusetts	Massachusetts	Sheet Metal	Son
1940	Robert Blair	21	Rowan-County, North Carolina	North Carolina	Grease Wiper	Son
1920	Robert J. Blair		Strafford, New Hampshire	Ireland	Assistant Postmaster	Head
1940	Robert A. Blair	47	Erie-County, Pennsylvania	Pennsylvania	General Superintendent	Head
1920	Robert E Blair		Fayette, Pennsylvania	Pennsylvania	Laborer	Head
1930	Robert T. Blair		Wayne, Michigan	Michigan	—	Son
1940	Robert Blair	20	Talladega-County, Alabama	Alabama	Farm	Son
1940	Robert W. Blair	22	Denver-County, Colorado	Missouri	Ski Teacher-Geologist	Son
1930	Robert C. Jr. Blair		Fulton, Georgia	Georgia	Salesman	Son
1940	Robert H. Blair	58	Caldwell-County, North Carolina	North Carolina	Carpenter	Head
1930	Robert Blair		Ouachita, Arkansas	Arkansas	Farmer	Head
1940	Robert Blair	55	Knott-County, Kentucky	Kentucky	Miner	Head
1930	Robert Blair		Westmoreland, Pennsylvania	Ireland	Minister	Head
1920	Robert Blair		Washington, Tennessee	Tennessee	Seamstress	Head
1900	Robert Blair	49	Philadelphia, Pennsylvania	Scotland	Carpenter	Head
1930	Robert P Blair		Pittsylvania, Virginia	Virginia	Farmer	Head
1930	Robert G. Blair		Harlan, Kentucky	Kentucky	—	Head
1930	Robert D. Blair		Perry, Missouri	Missouri	Farmer	Head
1940	Robert Blair	63	Delaware-County, Pennsylvania	Scotland	Janitor	Head
1940	Robert Blair	46	Marshall-County, Kansas	Kansas	Farmer	Head
1940	Robert Blair	15	Portage-County, Ohio	Ohio	—	Son
1940	Robert A Blair	19	Stone-County, Missouri	Missouri	Farmer	Son
1920	Robert Blair		Sullivan, Indiana	Illinois	Laborer	Son
1930	Robert H. Blair		Guilford, North Carolina	North Carolina	None	Son
1940	Robert Blair	18	Muskegon-County, Michigan	Michigan	Apprentice Worker	Son
1940	Robert Blair	41	Lincoln-County, Louisiana	Louisiana	Farmer	Head
1940	Robert Blair	15	Washington-County, Maryland	Maryland	—	Son
1930	Robert M Blair		Monroe, Tennessee	Tennessee	Farm Laborer	Son
1940	Robert Blair	11	Lake-County, Indiana	Indiana	—	Son
1940	Robert Blair	18	Vigo-County, Indiana	Indiana	—	Son

Load More Robert Blair Census Records

About Robert Blair US Census Records & Model Tree

We've indexed 4202 free, proprietary US Census records for Robert Blair across 1900–1950, covering 50 states, DC, and 1 territory: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, 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 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 4202 US Census records for Robert Blair, 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 Blair'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 Blair 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 Blair 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.