Ionia Michigan ZIP Codes

Ionia holds a single ZIP code.

Every ZIP code in Ionia

The complete list of Ionia, Michigan ZIP codes with the county each falls in.
ZIP code	County
48846	Ionia 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Ionia codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Ionia. 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 Ionia ZIP code begins 488. Those first three digits identify the sectional center facility that processes mail for this part of Michigan. Statewide that range covers 88 ZIP codes, so Ionia accounts for 1% of it.

Every Michigan ZIP prefix and the region it covers →

Area codes covering Ionia

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

Ionia Michigan area codes in full →

Where Ionia's ZIP codes sit

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

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

Cities near Ionia

The closest places to Ionia with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Lyons Michigan ZIP codes	6.6 mi	1 ZIP code
Muir Michigan ZIP codes	7.2 mi	1 ZIP code
Saranac Michigan ZIP codes	7.6 mi	1 ZIP code
Belding Michigan ZIP codes	12 mi	1 ZIP code
Portland Michigan ZIP codes	12 mi	1 ZIP code
Pewamo Michigan ZIP codes	12 mi	1 ZIP code
Clarksville Michigan ZIP codes	13 mi	1 ZIP code
Lake Odessa Michigan ZIP codes	14 mi	1 ZIP code

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