Area Code 308 — Grand Island, Nebraska

NANP area code

308

UTC−6, UTC−5 during daylight saving

State
Nebraska
Primary city
Grand Island
Time zone
Central
In service
1955

The code reaches 197 communities and 52 counties across Nebraska.

Was this call legitimate?

The area code itself carries no risk signal. 308 is assigned to Grand Island, Nebraska, so a call from it is consistent with a real caller in that area — but the digits alone prove nothing, because they can be forged.

Caller ID is set by whoever places the call, not verified by the network. That is why neighbour spoofing works: an operation anywhere in the world can display a number that matches the area code — and often the first three digits after it — of the person being called, so the call looks local. Every community in the 308 territory is a plausible-looking origin for a forged 308 number, which is why one can be made to look like a neighbour to so many people.

If you did not recognise the call: let it go to voicemail — a legitimate caller with real business will leave one. Do not return the call using the number shown; look the organisation up independently and call the number you found. Never confirm personal details, card numbers, or one-time codes to someone who called you, however plausible the number looked.

Codes.zone publishes no complaint counts, risk scores, or caller identities. We hold no data on individual numbers and will not estimate what we cannot source.

Local time and when to call back

Time there now

Central · UTC−6, UTC−5 during daylight saving

Reasonable callback window

8:00 AM – 9:00 PM

local time in Central

Federal rules bar telemarketing calls to a residence outside 8:00 AM–9:00 PM in the called party's own time zone. It is a sensible bound for a personal callback too — and a caller who rang you well outside it was not observing it.

Overlay codes

308 is the only area code serving its territory — it has no overlay in the current numbering plan for Nebraska. Where a region has no overlay, a number's area code still corresponds to a single geographic area.

Cities served

largest 20 by ZIP count
Communities served by area code 308, ranked by how many ZIP codes each holds.
CityZIP codesCounty
Kearney4Buffalo County
Grand Island3Hall County
North Platte2Lincoln County
Oshkosh2Garden County
Scottsbluff2Scotts Bluff County
Sidney2Cheyenne County
Albion1Boone County
Alda1Hall County
Alliance1Box Butte County
Alma1Harlan County
Amelia1Holt County
Amherst1Buffalo County
Angora1Morrill County
Anselmo1Custer County
Ansley1Custer County
Arapahoe1Furnas County
Arcadia1Valley County
Archer1Merrick County
Arnold1Custer County
Arthur1Arthur County

177 further communities not listed. All Nebraska area codes →

Each point is a community served by 308, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Scope every community matched to 308. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot), GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . Coordinates are place reference points, not boundaries.

Counties

Prefixes inside 308

We do not publish the NXX prefixes inside 308. The assignment of prefixes to rate centres comes from LERG routing data, which is proprietary, and we will not estimate it from postal data — ZIP codes and telephone prefixes do not map onto each other. Awaiting a clean-rights NPA-NXX source.