What is another word for headquarters?

Common synonyms for headquarters include central office, main office, home office, home base.

What is the plural of headquarters?

The plural of headquarters is headquarters.

/ˈhɛdˌk(w)ɔɹ.tɚz/noun3 syllables

Headquarters means: (usually plural) the office that serves as the administrative center of an enterprise.

noun, as in (usually plural) the office that serves as the administrative center of an enterprise

central office, main office, home office, home base

noun, as in the military installation from which a commander performs the functions of command

HQ, military headquarters

noun

(usually plural) the office that serves as the administrative center of an enterprise“many companies have their headquarters in New York”

the military installation from which a commander performs the functions of command“the general's headquarters were a couple of large tents”

(plural) a military unit consisting of a commander and the headquarters staff

Definitions from the Open English WordNet, CC BY 4.0.

The general commanded him to report to headquarters.unknown
The company's headquarters were located in a modern and stylish building.Amastan
In this next slide we see an aerial shot of the company headquarters.darinmex
There are few volunteers here at the headquarters.marcelostockle
Our headquarters are located in another part of town.belgavox
There was a different kind of atmosphere in the headquarters.eastasiastudent
The president's car arrived at the headquarters of the national intelligence service.Amastan
He was arrested and immediately taken to headquarters.ET

Sentences from Tatoeba, CC BY 2.0 FR, credited to their authors.

as a noun