Storbritannien
- Essex, län avÖstra England
Amerikas förenta stater
- Essex, en stad i Middlesex County, Connecticut
- Essex, byn Kankakee County, Illinois
- Essex, Page County Town, Iowa
- Essex, folkräkning utsedd plats i Baltimore County, Maryland
- Essex, Essex County Municipality, Massachusetts
- Essex, Clinton County Township, Michigan
- Essex, Stoddard County Town, Missouri
- Essex, länsstad Essex, New York
- Essex, en stad i Chittenden County, Vermont