Eureka Area Code

Eureka, CA is served by area code 707. This area code was initially assigned on 01-JAN-59 and has been in continuous service since 01-JAN-59, supporting the city's growing communication needs over the years.

The area code 707 is part of an overlay complex (369/707), which serves the same geographic region. This means that multiple area codes are used in the same area to accommodate the increasing demand for phone numbers.

City Name	Eureka, CA
Area Code	707
Overlay Complex	369/707
State	California
Country	United State
Time Zone	Pacific Standard Time (PST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	01-JAN-59
In Service Date	01-JAN-59

Eureka, SD is served by area code 605. This area code was initially assigned on 01-JAN-47 and has been in continuous service since 01-JAN-47, supporting the city's growing communication needs over the years.

City Name	Eureka, SD
Area Code	605
State	South Dakota
Country	United State
Time Zone	Central/Mountain Time
Code Type	General Purpose Code
In Service	Yes
Assignment Date	01-JAN-47
In Service Date	01-JAN-47

Eureka, UT is served by area code 435. This area code was initially assigned on 30-MAY-97 and has been in continuous service since 21-SEP-97, supporting the city's growing communication needs over the years.

City Name	Eureka, UT
Area Code	435
State	Utah
Country	United State
Time Zone	Mountain Standard Time (MST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	30-MAY-97
In Service Date	21-SEP-97

Eureka, IL is served by area code 309. This area code was initially assigned on 01-JAN-57 and has been in continuous service since 01-JAN-57, supporting the city's growing communication needs over the years.

The area code 309 is part of an overlay complex (309/861), which serves the same geographic region. This means that multiple area codes are used in the same area to accommodate the increasing demand for phone numbers.

City Name	Eureka, IL
Area Code	309
Overlay Complex	309/861
State	Illinois
Country	United State
Time Zone	Central Standard Time (CST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	01-JAN-57
In Service Date	01-JAN-57

Eureka, TX is served by area code 903. This area code was initially assigned on 26-MAY-89 and has been in continuous service since 04-NOV-90, supporting the city's growing communication needs over the years.

The area code 903 is part of an overlay complex (430/903), which serves the same geographic region. This means that multiple area codes are used in the same area to accommodate the increasing demand for phone numbers.

City Name	Eureka, TX
Area Code	903
Overlay Complex	430/903
State	Texas
Country	United State
Time Zone	Central Standard Time (CST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	26-MAY-89
In Service Date	04-NOV-90

Eureka, KS is served by area code 620. This area code was initially assigned on 14-SEP-00 and has been in continuous service since 03-FEB-01, supporting the city's growing communication needs over the years.

City Name	Eureka, KS
Area Code	620
State	Kansas
Country	United State
Time Zone	Central/Mountain Time
Code Type	General Purpose Code
In Service	Yes
Assignment Date	14-SEP-00
In Service Date	03-FEB-01

Eureka, WI is served by area code 920. This area code was initially assigned on 15-JAN-97 and has been in continuous service since 26-JUL-97, supporting the city's growing communication needs over the years.

The area code 920 is part of an overlay complex (274/920), which serves the same geographic region. This means that multiple area codes are used in the same area to accommodate the increasing demand for phone numbers.

City Name	Eureka, WI
Area Code	920
Overlay Complex	274/920
State	Wisconsin
Country	United State
Time Zone	Central Standard Time (CST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	15-JAN-97
In Service Date	26-JUL-97

Eureka, MO is served by area code 636. This area code was initially assigned on 15-APR-99 and has been in continuous service since 22-MAY-99, supporting the city's growing communication needs over the years.

City Name	Eureka, MO
Area Code	636
State	Missouri
Country	United State
Time Zone	Central Standard Time (CST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	15-APR-99
In Service Date	22-MAY-99

Eureka, MT is served by area code 406. This area code was initially assigned on 01-JAN-47 and has been in continuous service since 01-JAN-47, supporting the city's growing communication needs over the years.

City Name	Eureka, MT
Area Code	406
State	Montana
Country	United State
Time Zone	Mountain Standard Time (MST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	01-JAN-47
In Service Date	01-JAN-47

Eureka, NV is served by area code 775. This area code was initially assigned on 25-MAR-98 and has been in continuous service since 12-DEC-98, supporting the city's growing communication needs over the years.

City Name	Eureka, NV
Area Code	775
State	Nevada
Country	United State
Time Zone	PT/MT only for W Wendover
Code Type	General Purpose Code
In Service	Yes
Assignment Date	25-MAR-98
In Service Date	12-DEC-98

Eureka, NC is served by area code 919. This area code was initially assigned on 01-JAN-54 and has been in continuous service since 01-JAN-54, supporting the city's growing communication needs over the years.

The area code 919 is part of an overlay complex (919/984), which serves the same geographic region. This means that multiple area codes are used in the same area to accommodate the increasing demand for phone numbers.

City Name	Eureka, NC
Area Code	919
Overlay Complex	919/984
State	North Carolina
Country	United State
Time Zone	Eastern Standard Time (EST)
Code Type	General Purpose Code
In Service	Yes
Assignment Date	01-JAN-54
In Service Date	01-JAN-54