Question 1

What cities are covered by area code 309 in Illinois?

Accepted Answer

Area code 309 covers cities such as Bloomington, Peoria, Moline, East Moline, East Peoria, Galesburg, Normal, Pekin, and Rock Island.

Question 2

When was area code 309 established?

Accepted Answer

Area code 309 was established in 1957.

Question 3

What is the overlay code for area code 309?

Accepted Answer

The overlay code for area code 309 is 861.

Question 4

Why was an overlay code introduced for area code 309?

Accepted Answer

The overlay code 861 was introduced to accommodate growing demand and prevent number exhaustion in the region.

Question 5

What are the major telecommunications services available in area code 309?

Accepted Answer

Area code 309 supports landline services, wireless services, and VoIP services.

Question 6

Which regulatory body oversees area code 309?

Accepted Answer

The Illinois Commerce Commission (ICC) oversees the regulatory framework for area code 309.

Question 7

When did area code 309 transition to ten-digit dialing?

Accepted Answer

Area code 309 transitioned to ten-digit dialing on October 24, 2021.

Question 8

What historical changes led to the creation of area code 309?

Accepted Answer

Area code 309 was created in 1957 from a split of area code 815.

Question 9

What is the significance of the year 2021 for area code 309?

Accepted Answer

In 2021, area code 309 transitioned to ten-digit dialing to accommodate the national 988 lifeline.

Question 10

What is the NPA code for area code 309?

Accepted Answer

The NPA (Numbering Plan Area) code for area code 309 is 309 itself.

Question 11

What are the latitude and longitude coordinates for Bloomington in area code 309?

Accepted Answer

Bloomington is located at 40.4842°N latitude and -88.99369°W longitude.

Question 12

How does area code 309 support rural and urban connectivity?

Accepted Answer

Area code 309 supports connectivity through a variety of telecommunications services, including landline, wireless, and VoIP.

Question 13

Where can I find more information about area code 309 regulations?

Accepted Answer

More information can be found on the Illinois Commerce Commission's official site.

Question 14

How does area code 309 contribute to Illinois' telecommunications infrastructure?

Accepted Answer

Area code 309 supports major cities and smaller communities, ensuring robust telecommunications connectivity in west-central Illinois.

Question 15

What prompted the change to ten-digit dialing in area code 309?

Accepted Answer

The change to ten-digit dialing was prompted by the need to accommodate the national 988 lifeline and avoid number exhaustion.

Question 16

What is the purpose of the Illinois Commerce Commission in relation to area code 309?

Accepted Answer

The Illinois Commerce Commission regulates telecommunications services and ensures compliance with state and federal guidelines for area code 309.

Question 17

How many major cities are included in area code 309?

Accepted Answer

There are nine major cities included in area code 309.

Question 18

What is the geographical scope of area code 309?

Accepted Answer

Area code 309 covers a significant portion of west-central Illinois, including both urban and rural areas.

Question 19

How has area code 309 evolved over the years?

Accepted Answer

Area code 309 has evolved with changes such as the introduction of overlay code 861 and the transition to ten-digit dialing to meet growing demand.

Question 20

What resources are available for learning more about area codes in Illinois?

Accepted Answer

Resources such as the Illinois Commerce Commission's official site and the Area Code 309 Wikipedia page provide more information.

Question 21

What impact did the introduction of the 988 lifeline have on dialing procedures in area code 309?

Accepted Answer

The introduction of the 988 lifeline necessitated a transition to ten-digit dialing in area code 309 to ensure proper call routing and prevent conflicts with the new service.

Question 22

How does the overlay code 861 impact existing phone numbers within area code 309?

Accepted Answer

The overlay code 861 does not change existing phone numbers. It introduces new phone numbers within the same geographic region, requiring the use of ten-digit dialing for all calls.

Question 23

What specific responsibilities does the Illinois Commerce Commission (ICC) have regarding area code 309?

Accepted Answer

The Illinois Commerce Commission (ICC) is responsible for overseeing telecommunications regulations, managing number allocation, and ensuring compliance with state and federal guidelines within area code 309.

Question 24

In what year was the overlay code 861 implemented for area code 309?

Accepted Answer

The overlay code 861 was implemented in 2023 to address the growing demand for phone numbers in the 309 area.

Question 25

Besides preventing number exhaustion, what other benefits does the overlay code 861 bring to area code 309?

Accepted Answer

Besides preventing number exhaustion, the overlay code 861 ensures continued availability of telecommunication services and supports technological advancements within the region.

Question 26

What is the significance of Moline, Illinois, within the area code 309 region?

Accepted Answer

Moline is one of the major cities located within the area code 309 region, contributing significantly to the area's telecommunications needs and economic activity.

Question 27

What types of telecommunication infrastructure are utilized in area code 309 to support connectivity?

Accepted Answer

Area code 309 utilizes landline, wireless, and VoIP infrastructure to ensure comprehensive connectivity across both urban and rural areas.

Question 28

How do I dial a local number within area code 309 after the transition to ten-digit dialing?

Accepted Answer

After the transition to ten-digit dialing, you must dial the full ten-digit phone number (area code + phone number) for all local calls within area code 309.

Question 29

Does the introduction of area code 861 affect long-distance calling to or from area code 309?

Accepted Answer

No, the introduction of area code 861 does not change the procedures for long-distance calling to or from area code 309. Standard long-distance dialing procedures still apply.

Question 30

What should businesses in Bloomington, Illinois, know about the impact of area code 861?

Accepted Answer

Businesses in Bloomington should ensure their phone systems are updated to support ten-digit dialing to accommodate the overlay code 861 and maintain seamless communication.

City	Latitude	Longitude
Bloomington	40.4842°N	-88.99369°W
East Moline	41.50087°N	-90.4443°W
East Peoria	40.66615°N	-89.5801°W
Galesburg	40.94782°N	-90.37124°W
Moline	41.5067°N	-90.51513°W
Normal	40.5142°N	-88.99063°W
Pekin	40.56754°N	-89.64066°W
Peoria	40.69365°N	-89.58899°W
Rock Island	41.50948°N	-90.57875°W

Area Code 309 in Illinois: Location, Cities, and Telecom Details

Key Facts About Area Code 309

Where is Area Code 309 Located?

Technical Specifications

Telecom Services and Network Infrastructure

Major Carriers and Services

Regulatory Information

Historical Context and Milestones

Conclusion and Further Resources