How many Oscar Nelson census records do you have?

We have 7430 US Census records for Oscar Nelson, from 1900 to 1950, across 50 states and DC.

What's in a Oscar Nelson census record?

You'll see Oscar'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 Oscar Nelson'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 Oscar Nelson census records free?

Yes. All Oscar Nelson 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 Oscar Nelson?

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

How do I find Oscar Nelson 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 Oscar Nelson?

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.

Oscar Nelson — US Census Records & Model Tree

We found 7430 free census records for Oscar Nelson across 6 census years (1900–1950), in 50 states and DC and 1184 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Oscar Nelson 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 7430 records for Oscar Nelson US Census, ranked by Model Tree richness

No records match your filters.

Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Oscar Nelson	52	Goodhue-County, Minnesota	Minnesota	Plumbing	Head
1940	Oscar Nelson	44	Providence-County, Rhode Island	New York	Janitor	Head
1930	Oscar R Nelson		Hennepin, Minnesota	Minnesota	Solicitor	Head
1930	Oscar Nelson		Middlesex, Massachusetts	Massachusetts	Const. Engineer	Head
1940	Oscar J. Nelson	43	Cook-County, Illinois	Illinois	Adjuster	Head
1940	Oscar Nelson	42	Hennepin-County, Minnesota	Minnesota	Painter	Head
1940	Oscar Nelson	30	Todd-County, Minnesota	Minnesota	Truck Driver	Son
1940	Oscar A. Nelson	41	Marshall-County, Minnesota	Minnesota	Farmer	Son
1920	Oscar E Nelson		Hennepin, Minnesota	Minnesota	Laborer	Son
1940	Oscar E Nelson	46	Marshall-County, Kansas	Kansas	Farmer	Head
1940	Oscar Nelson	51	Wright-County, Iowa	Iowa	Farming	Head
1940	Oscar Nelson	36	Isanti-County, Minnesota	Minnesota	Laborer	Head
1940	Oscar Nelson	43	St.-Louis-County, Minnesota	Minnesota	—	Head
1930	Oscar Nelson		Sangamon, Illinois	Illinois	—	Son
1930	Oscar Nelson		Richmond, New York	New York	Still Operator	Head
1940	Oscar Nelson	24	Bronx-County, New York	New York	Laborer	Son
1930	Oscar Nelson		Chippewa, Wisconsin	Wisconsin	Salesman	Head
1940	Oscar Nelson	38	Fillmore-County, Nebraska	Nebraska	Farmer	Head
1920	Oscar Nelson		Cook, Illinois	Illinois	Switchman	Head
1930	Oscar Nelson		Swift, Minnesota	Minnesota	Farmer	Head
1930	Oscar Nelson		Wayne, Michigan	Michigan	Laborer	Son
1930	Oscar A. Nelson		Lewis And Clark, Montana	Montana	Book Binder	Son
1940	Oscar Nelson	20	Muskegon-County, Michigan	Michigan	Machine Hand	Son
1940	Oscar Nelson	29	Marshall-County, Iowa	Iowa	Farmer	Son
1940	Oscar G Nelson	25	Schoolcraft-County, Michigan	Michigan	Clerk	Son
1920	Oscar C. Nelson		Alameda, California	California	Fireman	Son
1940	Oscar F. Nelson	38	Denver-County, Colorado	Colorado	Teller	Head
1940	Oscar E. Nelson	37	St.-Joseph-County, Indiana	Indiana	Machine Op.	Head
1930	Oscar R Nelson		Douglas, Nebraska	Nebraska	Clerk	Son
1940	Oscar Nelson	55	King-County, Washington	Norway	Cabinet Maker	Head

Load More Oscar Nelson Census Records

About Oscar Nelson US Census Records & Model Tree

We've indexed 7430 free, proprietary US Census records for Oscar Nelson across 1900–1950, covering 50 states and DC: 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, 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 Oscar 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 7430 US Census records for Oscar Nelson, from 1900 to 1950, across 50 states and DC.
: You'll see Oscar'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 Oscar Nelson'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 Oscar Nelson 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 Oscar Nelson records from the 1900 through 1950 US Federal Census, across 50 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 Nelson US Census Records

Agnes Nelson Albert Nelson Alfred Nelson Alice Nelson Alma Nelson Andrew Nelson Anna Nelson Annie Nelson Arthur Nelson Bertha Nelson Betty Nelson Carl Nelson Carrie Nelson Charles Nelson Clara Nelson Clarence Nelson David Nelson Donald Nelson Doris Nelson Dorothy Nelson Earl Nelson Edith Nelson Edna Nelson Edward Nelson Edwin Nelson Elizabeth Nelson Ella Nelson Ellen Nelson Elmer Nelson Emma Nelson Ernest Nelson Esther Nelson Ethel Nelson Evelyn Nelson Florence Nelson Frank Nelson Fred Nelson George Nelson Gertrude Nelson Gladys Nelson Grace Nelson Hans Nelson Harold Nelson Harry Nelson Hazel Nelson Helen Nelson Henry Nelson Herbert Nelson Hilda Nelson Howard Nelson Ida Nelson Irene Nelson James Nelson Jennie Nelson Jessie Nelson John Nelson Joseph Nelson Julia Nelson Kenneth Nelson Laura Nelson Lillian Nelson Lillie Nelson Lois Nelson Louis Nelson Mabel Nelson Margaret Nelson Marie Nelson Martha Nelson Martin Nelson Mary Nelson Mildred Nelson Minnie Nelson Myrtle Nelson Nellie Nelson Nels Nelson Paul Nelson Peter Nelson Ralph Nelson Raymond Nelson Richard Nelson Robert Nelson Roy Nelson Ruth Nelson Sarah Nelson Thomas Nelson Walter Nelson William Nelson Willie Nelson

All Nelson census records →

Browse More Surnames

Murdock Murphy Murray Myers Nash Neal Newman Newton Nichols Nicholson Nixon Noble

← Back to US Census Records