Ismay Montana ZIP Codes

Ismay holds a single ZIP code.

Every ZIP code in Ismay

The complete list of Ismay, Montana ZIP codes with the county each falls in.
ZIP code	County
59336	Custer County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Ismay codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Ismay. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Ismay ZIP code begins 593. Those first three digits identify the sectional center facility that processes mail for this part of Montana. Statewide that range covers 31 ZIP codes, so Ismay accounts for 3% of it.

Every Montana ZIP prefix and the region it covers →

Area codes covering Ismay

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Ismay occupies.

406 Area code 406

Ismay Montana area codes in full →

Where Ismay's ZIP codes sit

Each point is one Ismay ZIP code, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Cities near Ismay

The closest places to Ismay with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Plevna Montana ZIP codes	14 mi	1 ZIP code
Baker Montana ZIP codes	27 mi	1 ZIP code
Terry Montana ZIP codes	32 mi	1 ZIP code
Glendive Montana ZIP codes	42 mi	1 ZIP code
Ekalaka Montana ZIP codes	44 mi	1 ZIP code
Wibaux Montana ZIP codes	44 mi	1 ZIP code
Miles City Montana ZIP codes	50 mi	1 ZIP code
Circle Montana ZIP codes	74 mi	1 ZIP code

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