How many John Spencer census records do you have?

We have 7475 US Census records for John Spencer, from 1900 to 1950, across 49 states, DC, and 1 territory.

What's in a John Spencer census record?

You'll see John'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 John Spencer'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 John Spencer census records free?

Yes. All John Spencer 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 John Spencer?

We have John Spencer records from the 1900 through 1950 US Federal Census, across 49 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find John Spencer 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 John Spencer?

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.

John Spencer — US Census Records & Model Tree

We found 7475 free census records for John Spencer across 6 census years (1900–1950), in 49 states, DC, and 1 territory and 1531 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Spencer 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 7475 records for John Spencer US Census, ranked by Model Tree richness

No records match your filters.

Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Spencer	21	Brooks-County, Georgia	Georgia	Laborer	Son
1930	John S. Spencer		Buchanan, Missouri	Missouri	Manager	Head
1940	John L. Spencer	30	Wyoming-County, New York	New York	Farm Laborer	Son
1930	John Spencer		Buckingham, Virginia	Virginia	—	Son
1940	John Spencer	27	Bear-Lake-County, Idaho	Idaho	Farmer	Son
1940	John P. Spencer	35	Champaign-County, Illinois	Illinois	Salesman	Head
1930	John A. Spencer		Sharkey, Mississippi	Mississippi	Farmer	Head
1940	John P. Spencer	30	Greene-County, Illinois	Illinois	Farmer	Son
1940	John T. Spencer	32	Kent-County, Delaware	Delaware	Truck Driver	Head
1930	John Spencer		Kemper, Mississippi	Mississippi	Farmer	Head
1940	John Spencer	24	Sumner-County, Kansas	Kansas	Farmer	Son
1930	John N. Spencer		Hubbard, Minnesota	Minnesota	Patrolman	Son
1930	John Spencer		Mayes, Oklahoma	Arkansas	Farmer	Head
1940	John M. Spencer	61	Benton-County, Oregon	Oregon	—	Head
1930	John R Spencer		Barren, Kentucky	Kentucky	Farmer	Head
1940	John L. Spencer	57	Rockingham-County, Virginia	West Virginia	Merchant	Head
1940	John D. Spencer	63	Breathitt-County, Kentucky	Kentucky	Laborer	Head
1920	John A. Spencer		Ripley, Indiana	Indiana	Druggist	Head
1940	John Spencer	65	Gladwin-County, Michigan	Ohio	Laborer	Head
1940	John F. Spencer	66	Los-Angeles-County, California	Ohio	Locomotive Engineer	Head
1940	John C Spencer	65	Macon-County, Missouri	Missouri	Farmer	Head
1940	John Spencer	45	Baltimore-City-County, Maryland	Virginia	Long Shoreman	Head
1940	John W. Spencer	62	Carroll-County, Maryland	Maryland	Laborer	Head
1940	John H Spencer	46	Marshall-County, Iowa	Alabama	Night Clerk	Head
1940	John H. Spencer	56	Middlesex-County, Massachusetts	Maine	Salesman	Head
1940	John S. Spencer	69	Hampden-County, Massachusetts	Connecticut	Sales Manager	Head
1940	John S. Spencer	53	Broome-County, New York	New York	Carpenter	Head
1940	John D. Spencer	53	Duchesne-County, Utah	Utah	Feeding	Head
1940	John P. Spencer	62	Hardin-County, Tennessee	Tennessee	Farmer Operator	Head
1940	John H. Spencer	58	Greenville-County, South Carolina	South Carolina	Manager	Head

Load More John Spencer Census Records

About John Spencer US Census Records & Model Tree

We've indexed 7475 free, proprietary US Census records for John Spencer across 1900–1950, covering 49 states, DC, and 1 territory: Alabama, 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, Puerto Rico, 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 John 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 7475 US Census records for John Spencer, from 1900 to 1950, across 49 states, DC, and 1 territory.
: You'll see John'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 John Spencer'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 John Spencer 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 John Spencer records from the 1900 through 1950 US Federal Census, across 49 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.