Where is area code 620?
NANPA assigns 620 to Kansas. The source report does not provide city-level coverage for this record, so this page does not guess a particular city. Browse other codes in Kansas
Verified area-code information
620 Area Code
620 is an in-service United States area code assigned to Kansas. It identifies a numbering region, not a caller’s current location.
Official Numbering RegionVerified NANPA Assignment
KansasArea Code 620
Country: United States•Time Zone: Central and Mountain•In Service: 03-Feb-2001
- Numbering country
- United States
- Area-code type
- Geographic
- Numbering region
- Kansas
- Time-zone information
- Central and Mountain
- In service since
- 03-Feb-2001
View the official area-code maps ↗. Maps show numbering areas, not a caller’s location.
Time zones associated with 620
NANPA lists Central and Mountain for this numbering area. These are numbering-region time zones, not a caller’s current location.
Central time
Mountain time
An area code can span more than one time zone. Local daylight-saving rules may differ.
How do you dial a 620 number?
Use the North American country calling code +1 followed by the three-digit area code and seven-digit local number. For example, write the pattern as +1 620 XXX XXXX. Local dialing rules and charges depend on your location and provider. Check a supported dialing format or check NANPA’s 10-digit dialing list.
Assigned prefixes in 620
NANPA’s US report listed 704 assigned prefixes on 2026-09-29. These are code assignments, not a count of active phone numbers or proof of a caller’s current carrier. Search any US area code and prefix.
Top rate-center labels by assigned prefixes
| Rate center | Assigned prefixes |
|---|---|
| HUTCHINSON | 28 |
| GARDENCITY | 17 |
| DODGE CITY | 16 |
| EMPORIA | 15 |
| PITTSBURG | 15 |
Top listed companies by assigned prefixes
| Assignment company | Assigned prefixes |
|---|---|
| SOUTHWESTERN BELL | 149 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS | 59 |
| UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK | 44 |
| LEVEL 3 COMMUNICATIONS, LLC - KS | 41 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 31 |
620 prefix lookup
704 assigned prefixes are listed for this area code. Search NANPA’s US central-office code assignments. The listed company and rate center describe an assignment; number portability means they cannot identify the current carrier, subscriber, or caller.
The area-code file loads when you search. The three-digit prefix stays in your browser.
Check a number with area code 620
Enter the full ten-digit number to see its structure and formatting. The check stays in your browser.
Check a 620 number
Enter a 10-digit +1 North American number. We check its structure and area-code record, not the caller’s identity or whether the line is active.
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Received an unfamiliar call?
The displayed number may be spoofed. Do not rely on an area code as proof of caller identity. If the caller claims to represent a business, end the call and contact that business using a number you found independently.
Common questions about 620
What time zone is area code 620 in?
620 is assigned to Kansas, and the NANPA record associates it with Central and Mountain time. A phone number does not reveal its owner’s current time zone. The clock above uses a representative time zone for the numbering area.
Does 620 mean the caller is in Kansas?
No. An area code is an assignment, and a person can travel, move, use internet calling, or display a spoofed number.
Can this page identify who called?
No. OfficialAreaCode has no live subscriber directory or spam-report database.