Decatur Michigan ZIP Codes
Decatur holds a single ZIP code.
Every ZIP code in Decatur
| ZIP code | County |
|---|---|
| 49045 | Van Buren 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Decatur codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Decatur. 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 Decatur ZIP code begins 490. Those first three digits identify the sectional center facility that processes mail for this part of Michigan. Statewide that range covers 92 ZIP codes, so Decatur accounts for 1% of it.
Every Michigan ZIP prefix and the region it covers →
Area codes covering Decatur
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 Decatur occupies.
Decatur Michigan area codes in full →
Where Decatur's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Decatur
| City | Distance | ZIP codes |
|---|---|---|
| Lawton Michigan ZIP codes | 7.8 mi | 1 ZIP code |
| Paw Paw Michigan ZIP codes | 8.5 mi | 1 ZIP code |
| Lawrence Michigan ZIP codes | 8.5 mi | 1 ZIP code |
| Marcellus Michigan ZIP codes | 10 mi | 1 ZIP code |
| Dowagiac Michigan ZIP codes | 11 mi | 1 ZIP code |
| Mattawan Michigan ZIP codes | 12 mi | 1 ZIP code |
| Hartford Michigan ZIP codes | 12 mi | 1 ZIP code |
| Vandalia Michigan ZIP codes | 13 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.