Mercer Missouri ZIP Codes
Mercer holds a single ZIP code.
Every ZIP code in Mercer
| ZIP code | County |
|---|---|
| 64661 | Mercer 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Mercer codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Mercer. 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 Mercer ZIP code begins 646. Those first three digits identify the sectional center facility that processes mail for this part of Missouri. Statewide that range covers 55 ZIP codes, so Mercer accounts for 2% of it.
Every Missouri ZIP prefix and the region it covers →
Area codes covering Mercer
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 Mercer occupies.
Mercer Missouri area codes in full →
Where Mercer's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Mercer
| City | Distance | ZIP codes |
|---|---|---|
| Princeton Missouri ZIP codes | 8.5 mi | 1 ZIP code |
| Powersville Missouri ZIP codes | 12 mi | 1 ZIP code |
| Lucerne Missouri ZIP codes | 13 mi | 1 ZIP code |
| Cainsville Missouri ZIP codes | 14 mi | 1 ZIP code |
| Newtown Missouri ZIP codes | 14 mi | 1 ZIP code |
| Harris Missouri ZIP codes | 17 mi | 1 ZIP code |
| Spickard Missouri ZIP codes | 19 mi | 1 ZIP code |
| Blythedale Missouri ZIP codes | 21 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.