Spencer Wisconsin ZIP Codes
Spencer holds a single ZIP code.
Every ZIP code in Spencer
| ZIP code | County |
|---|---|
| 54479 | Marathon 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Spencer codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Spencer. 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 Spencer ZIP code begins 544. Those first three digits identify the sectional center facility that processes mail for this part of Wisconsin. Statewide that range covers 86 ZIP codes, so Spencer accounts for 1% of it.
Every Wisconsin ZIP prefix and the region it covers →
Area codes covering Spencer
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 Spencer occupies.
Spencer Wisconsin area codes in full →
Where Spencer's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Spencer
| City | Distance | ZIP codes |
|---|---|---|
| Unity Wisconsin ZIP codes | 6.8 mi | 1 ZIP code |
| Marshfield Wisconsin ZIP codes | 8.8 mi | 3 ZIP codes |
| Loyal Wisconsin ZIP codes | 9.7 mi | 1 ZIP code |
| Colby Wisconsin ZIP codes | 11 mi | 1 ZIP code |
| Stratford Wisconsin ZIP codes | 12 mi | 1 ZIP code |
| Hewitt Wisconsin ZIP codes | 12 mi | 1 ZIP code |
| Abbotsford Wisconsin ZIP codes | 13 mi | 1 ZIP code |
| Granton Wisconsin ZIP codes | 14 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.