Washington, Missouri
Central Time Zone (UTC-6) · MO · —
About Area Codes in Washington, Missouri
Washington, Missouri is served by area code 636, which was established in 1999 as a geographic split from a larger area code region. The city falls within the Central time zone (UTC-6). All calls to and from Washington use the 636 area code prefix for local and long-distance dialing.
Other cities in area code 636
Frequently Asked Questions
What area code is Washington, Missouri?
Washington, Missouri uses area code 636.
What time zone is Washington in?
Washington is in the Central time zone (UTC-6).
Do I need to dial 10 digits when calling Washington?
Standard 7-digit dialing is used for local calls within Washington. However, 10-digit dialing is always accepted and required for long-distance calls.
When was area code 636 created?
Area code 636 was established in 1999 as a geographic split from a larger area code region to serve the growing population.
What cities share area code 636 with Washington?
Other cities sharing area code 636 with Washington include Arnold, Ballwin, Chesterfield, Crystal City, Eureka, among others.
Also called Washington:
Washington, MO · Central Time Zone