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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
number of persons
Grammar usage guide and real-world examplesUSAGE SUMMARY
"number of persons" is correct and usable in written English.
You can use it when referring to a group of people or the population of a place. For example, "The number of persons living in rural areas is decreasing."
✓ Grammatically correct
Science
News & Media
Academia
Alternative expressions(20)
how many people
quantity of individuals
population size
headcount
attendance record
personnel strength
plurality of persons
proportion of persons
number of individuals
total of people
proportion of the population
capacity of people
accumulation of people
weight of people
quantity of people
proportion of people
batch of people
caseload of people
availability of people
concentration of people
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
A number of persons received minor injuries.
News & Media
A large number of persons were killed.
News & Media
A Number of Persons Killed and Missing.
News & Media
(iv) Number of persons in party.
Academia
You have the requisite number of persons involved in logistics.
Academia
The number of persons afflicted by dementia has increased steadily.
Science
We have identified a number of persons who represented a threat to the United States".
News & Media
This is therefore (temporarily?) inflating the real number of persons online.
News & Media
Mentions the names of a number of persons involved in the handling of returning troops.
News & Media
The number of persons fleeing has gone down in the last couple of years.
News & Media
Quotes the opinions of a number of persons interviewed by the writer.
News & Media
Expert writing Tips
Best practice
When writing formally or scientifically, prefer "number of persons" over more casual alternatives like "number of people" for enhanced precision and clarity.
Common error
Avoid using "number of persons" in informal writing. Instead, opt for more natural alternatives like "number of people" or "how many people" to maintain a conversational tone.
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "number of persons" functions primarily as a noun phrase, typically serving as the subject or object of a sentence. It quantifies a group of people, and Ludwig's examples show its versatility in diverse contexts.
Frequent in
Science
34%
News & Media
33%
Academia
28%
Less common in
Encyclopedias
2%
Formal & Business
2%
Reference
0%
Ludwig's WRAP-UP
The phrase "number of persons" is a grammatically correct and widely used expression for quantifying groups of people. As Ludwig highlights, it is most appropriate for formal and scientific contexts, where precision is valued. While alternatives like "number of people" exist, "number of persons" maintains a higher level of formality. When using this phrase, ensure verb agreement with "number" and avoid overuse in casual settings. The phrase is common in scientific articles, news reports, and academic research.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
quantity of individuals
Replaces "number" with "quantity" and "persons" with "individuals", resulting in a slightly more formal tone.
count of people
Substitutes "persons" with the more common term "people", making it less formal.
total of individuals
Uses "total" instead of "number", focusing on the aggregate.
population size
Employs a demographic term to refer to the "number of persons" in a specific area or group.
body count
Implies a tally of deceased individuals, which drastically changes the original meaning and context.
census figure
Specifically refers to the "number of persons" recorded in a census.
headcount
Is a concise term referring to the "number of persons" present, often used in professional environments.
demographic statistics
Broader term including various aspects of a population including "number of persons".
attendance record
Specifies the "number of persons" present at a particular event or location.
personnel strength
Relates to the "number of persons" employed in a specific organization or unit.
FAQs
What is the difference between "number of persons" and "number of people"?
While both phrases refer to a count of individuals, "number of persons" is typically considered more formal and is often used in legal, scientific, or official contexts. "Number of people" is more common in everyday language.
When is it appropriate to use "number of persons" instead of "number of individuals"?
The phrase "number of persons" is preferred in formal or legal settings where precision is important. "Number of individuals" is generally interchangeable but can sometimes sound less formal or more clinical, depending on the context.
What are some alternatives to "number of persons" that I can use in less formal writing?
In less formal contexts, you can use phrases like "count of people", "total number of people", or simply "how many people".
How can I use "number of persons" correctly in a sentence?
Ensure that the verb agrees with "number". For example, "The number of persons affected by the disease is increasing." Here, "is" agrees with "number", not with "persons".
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested