Grasston Minnesota Area Code

One area code covers Grasston: 320.

The code covering Grasston

Area codes covering Grasston, Minnesota, with what each one primarily serves.
Area code	Primarily serves	In service
320	Willmar	1996

Scope the codes matched to Grasston. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot) and LocalCallingGuide NPA list (2026-07 NPA list). Updated 16 July 2026. Overlay relationships come from the numbering-plan authority; the place match is computed.

Which part of town has which code

Grasston has a single code, so there is nothing to divide — every local line carries 320.

ZIP codes for the same city

Postal geography is organised separately from telephone geography, so Grasston’s 1 ZIP code do not map onto the codes above. They are listed in full, with the county each falls in, on the postal side of the site.

Grasston Minnesota ZIP codes →

Nearby places with different codes

These are the closest places to Grasston whose area codes are not the same set. If you are near one of them, a local number may carry a code that is not on the list above.

The nearest places to Grasston covered by a different set of area codes.
City	Distance	Their area codes
Pine City Minnesota area codes	9.6 mi	320, 612
Rock Creek Minnesota area codes	12 mi	320, 612
Harris Minnesota area codes	16 mi	651, 763
Cambridge Minnesota area codes	17 mi	612, 763
Isanti Minnesota area codes	22 mi	763
North Branch Minnesota area codes	22 mi	651, 763
Princeton Minnesota area codes	26 mi	612, 763
Stacy Minnesota area codes	27 mi	651

Straight-line distance between place reference points, not driving distance.