Area code
620
620 is a United States area code. Under the North American Numbering Plan it belongs to Kansas, which has 4 area codes in total.
Validate a number in 620
Paste a full number and the tool checks it against the numbering plan. It returns the standard formats, the line type the plan assigns and the area code region.
Digits with or without punctuation work. Numbers outside the US are read with the +country code.
Area code 620 at a glance
NANPA lists 705 central office codes (prefixes) in use in area code 620, held by 70 holders across 257 rate centers.
| Fact | Value |
|---|---|
| In service since | 2001-02-03 |
| Time zone | CM |
| Prefixes in use | 705 |
| Pooled prefixes | 534 (76%) |
| Rate centers | 257 |
| Companies holding prefixes | 70 |
| Assignment dates on file | 2001-01-29 to 2026-01-07 (311 prefixes) |
| ZIP codes in its places | 215 |
Rate centers in area code 620
| Rate center | Prefixes | Share |
|---|---|---|
| HUTCHINSON | 28 | 4% |
| GARDENCITY | 18 | 3% |
| DODGE CITY | 16 | 2% |
| EMPORIA | 15 | 2% |
| PITTSBURG | 15 | 2% |
| GREAT BEND | 14 | 2% |
| LIBERAL | 13 | 2% |
| COFFEYVL | 12 | 2% |
| 249 other rate centers | 574 | 81% |
Who holds the prefixes in 620
Southwestern Bell holds the most prefixes, 149 (21%). 76% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| Holder | Prefixes | Share |
|---|---|---|
| Southwestern Bell | 149 | 21% |
| Centurylink | 60 | 9% |
| Verizon Wireless | 59 | 8% |
| Level 3 Communications | 41 | 6% |
| New Cingular Wireless PCS | 32 | 5% |
| Onvoy | 30 | 4% |
| 64 other carriers | 334 | 47% |
A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company. Find which carrier a number is on, or browse the prefix holders.
History of area code 620
- 1947-01-01 Area code 316, named as the parent of 620 in the NANPA report, was in service.
- 2001-02-03 Area code 620 went into service.
Area codes nearest to 620
Distance is measured between the centers of the ZIP code places each area code serves, so it is a rough guide.
ZIP codes in area code 620
215 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Hutchinson, KS | 3 |
| Liberal, KS | 2 |
| Albert, KS | 1 |
A ZIP code and an area code are unrelated systems. A ZIP code can sit in more than one area code, and an area code spans many ZIP codes.
Complaints on file for 620 numbers
1,415 FCC complaints are on file for 927 numbers in 620, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 85 |
| 2024 | 84 |
| 2025 | 42 |
Other area codes in Kansas
Kansas is one state with 4 area codes in the NANPA table. 620 is one of them.
Next to 620 in the numbering table
These are the codes just before and after 620 when all are sorted by number. They are neighbours on the list, not necessarily on the map.
What the area code does and does not tell you
A number that starts with 620 was first assigned in Kansas. That is a fact about where the number began, and it is a useful hint when you check a form entry, for example a billing address in Kansas next to a 620 phone number.
It does not show where the person is today. A number stays with its owner after a move or a change of provider (number portability), and mobile numbers travel with the handset. The area code also cannot tell you whether the line is active, who the carrier is, or whether the number is mobile or fixed: the plan shares those ranges. Read more about the area code, the numbering plan and line type.
Check numbers in bulk with the API
| Product | Credits | Docs |
|---|---|---|
| Phone Numbering-Plan Validation | 1 credit per valid number | API docs |
| Phone Intelligence (carrier and line status) | 1 credit per check (invalid numbers outside the US and Canada are free) | Product page |
Questions about area code 620
Where is area code 620?
NANPA assigns area code 620 to Kansas, United States.
In which state does area code 620 sit?
Kansas. 620 is one of 4 area codes the NANPA table assigns to the state.
Which places does area code 620 cover?
The places with the most ZIP codes among the rate centers in 620 are Hutchinson, KS, Liberal, KS and Albert, KS. The rate center list on this page shows all of them.
Who owns area code 620?
NANPA assigns area codes. Within 620, Southwestern Bell holds the most prefixes, 149 prefixes or 21%.
Which time zone does 620 use?
The NANPA NPA report lists the time zone for 620 as CM.
What year did 620 enter service?
The NANPA NPA report gives an in-service date of 2001-02-03, so 620 has been in use since 2001.
Does area code 620 have an overlay?
The NANPA NPA report lists no other area code in an overlay with 620.
Which area codes are nearest to 620?
The area codes closest to 620, measured between the centers of the ZIP code places they serve, are 316 (about 20 miles), 785 (about 105 miles), 572 (about 159 miles), 405 (about 161 miles) and 539 (about 162 miles).
How many prefixes does area code 620 have?
NANPA's report dated 2026-10-17 lists 705 prefixes in service in 620, spread over 257 rate centers and 70 holders.
Are there complaints about 620 numbers?
The FCC data on file has 1,415 complaints for 927 numbers in 620. They are unverified consumer reports. A number with no complaints on file is not proven safe.
Area code assignments: North American Numbering Plan Administrator NPA report, file dated 10/17/2026, retrieved 2026-10-17. Source file. New codes are assigned several times a year. Prefixes, rate centers, holders, time zone, in-service date and overlays: NANPA central office code report dated 2026-10-17 and NPA report dated 2026-10-18. Complaints: FCC consumer complaints open data, fetched 2026-10-17. ZIP code places: Postal code places and coordinates: GeoNames (geonames.org), licensed CC BY 4.0.