Single-word term for "Number of employees"

Is there a single-word term for "Number of employees" as in "our company's number of employees"?

Solution 1:

It might be called headcount. Per Wiktionary

2. The number of people present in a group or employed by a company.

Solution 2:

Consider,

personnel. Google Books

: a body of persons employed in an organization or place of work. Random House

The Orchestra, which boasts a personnel of 102 musicians, has long been considered one of Europe's finest.

workforce. Google Books

The people engaged in or available for work, either in a country or area or in a particular company or industry. OED

Solution 3:

I think you may use staff:

• [S, + sing/pl verb] the ​group of ​people who ​work for an ​organization: There is a good ​relationship between staff and ​pupils at the ​school.*

Our company's staff consist of ..(number).. workers/professionals.

Solution 4:

Definition #4 of “payroll” from WordReference Random House Unabridged Dictionary of American English is close:

Payroll: noun

4. the total number of people employed by a business firm or organization.