Millsboro Delaware ZIP Codes
Millsboro holds a single ZIP code.
Every ZIP code in Millsboro
| ZIP code | County |
|---|---|
| 19966 | Sussex 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Millsboro codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Millsboro. 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 Millsboro ZIP code begins 199. Those first three digits identify the sectional center facility that processes mail for this part of Delaware. Statewide that range covers 44 ZIP codes, so Millsboro accounts for 2% of it.
Every Delaware ZIP prefix and the region it covers →
Area codes covering Millsboro
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 Millsboro occupies.
Millsboro Delaware area codes in full →
Where Millsboro's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Millsboro
| City | Distance | ZIP codes |
|---|---|---|
| Dagsboro Delaware ZIP codes | 4.5 mi | 1 ZIP code |
| Frankford Delaware ZIP codes | 6.2 mi | 1 ZIP code |
| Georgetown Delaware ZIP codes | 8.1 mi | 1 ZIP code |
| Millville Delaware ZIP codes | 10 mi | 1 ZIP code |
| Selbyville Delaware ZIP codes | 11 mi | 1 ZIP code |
| Ocean View Delaware ZIP codes | 12 mi | 1 ZIP code |
| Milton Delaware ZIP codes | 13 mi | 1 ZIP code |
| Bethany Beach Delaware ZIP codes | 14 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.