Farmington Missouri ZIP Codes
Farmington holds a single ZIP code.
Every ZIP code in Farmington
| ZIP code | County |
|---|---|
| 63640 | St. Francois 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Farmington codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Farmington. 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 Farmington ZIP code begins 636. Those first three digits identify the sectional center facility that processes mail for this part of Missouri. Statewide that range covers 37 ZIP codes, so Farmington accounts for 3% of it.
Every Missouri ZIP prefix and the region it covers →
Area codes covering Farmington
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 Farmington occupies.
Farmington Missouri area codes in full →
Where Farmington's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Farmington
| City | Distance | ZIP codes |
|---|---|---|
| Park Hills Missouri ZIP codes | 4.6 mi | 1 ZIP code |
| Leadwood Missouri ZIP codes | 10 mi | 1 ZIP code |
| Bismarck Missouri ZIP codes | 11 mi | 1 ZIP code |
| Bonne Terre Missouri ZIP codes | 12 mi | 1 ZIP code |
| Irondale Missouri ZIP codes | 14 mi | 1 ZIP code |
| Pilot Knob Missouri ZIP codes | 16 mi | 1 ZIP code |
| Fredericktown Missouri ZIP codes | 17 mi | 1 ZIP code |
| Ironton Missouri ZIP codes | 17 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.