Union Michigan ZIP Codes
Union holds a single ZIP code.
Every ZIP code in Union
| ZIP code | County |
|---|---|
| 49130 | Cass 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Union codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Union. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Union ZIP code begins 491. Those first three digits identify the sectional center facility that processes mail for this part of Michigan. Statewide that range covers 20 ZIP codes, so Union accounts for 5% of it.
Every Michigan ZIP prefix and the region it covers →
Area codes covering Union
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 Union occupies.
Union Michigan area codes in full →
Where Union's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Union
| City | Distance | ZIP codes |
|---|---|---|
| Union City Michigan ZIP codes | 0.0 mi | 1 ZIP code |
| Burlington Michigan ZIP codes | 4.2 mi | 1 ZIP code |
| Athens Michigan ZIP codes | 4.9 mi | 1 ZIP code |
| Sherwood Michigan ZIP codes | 6.8 mi | 1 ZIP code |
| Tekonsha Michigan ZIP codes | 8.0 mi | 1 ZIP code |
| Coldwater Michigan ZIP codes | 11 mi | 1 ZIP code |
| Colon Michigan ZIP codes | 12 mi | 1 ZIP code |
| Bronson Michigan ZIP codes | 14 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.