Cainsville Missouri ZIP Codes
Cainsville holds a single ZIP code.
Every ZIP code in Cainsville
| ZIP code | County |
|---|---|
| 64632 | Harrison 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Cainsville codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Cainsville. 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 Cainsville 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 Cainsville accounts for 2% of it.
Every Missouri ZIP prefix and the region it covers →
Area codes covering Cainsville
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 Cainsville occupies.
Cainsville Missouri area codes in full →
Where Cainsville's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Cainsville
| City | Distance | ZIP codes |
|---|---|---|
| Blythedale Missouri ZIP codes | 8.4 mi | 1 ZIP code |
| Ridgeway Missouri ZIP codes | 9.6 mi | 1 ZIP code |
| Princeton Missouri ZIP codes | 10 mi | 1 ZIP code |
| Eagleville Missouri ZIP codes | 11 mi | 1 ZIP code |
| Mercer Missouri ZIP codes | 14 mi | 1 ZIP code |
| Spickard Missouri ZIP codes | 17 mi | 1 ZIP code |
| Bethany Missouri ZIP codes | 18 mi | 1 ZIP code |
| Gilman City Missouri ZIP codes | 22 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.