ZIP code · Millsboro · Delaware · United States
ZIP code 19966 — Millsboro
ZIP code 19966 serves Millsboro, Delaware.
- Postal code
- 19966Single source Value from one source, not cross-checked.
- City
- Millsboro
- County
- Sussex FIPS 10005
- State
- Delaware
- Country
- United States
- Coordinates
- 38.6595, -75.2464 — precision precise (locality)
View on OpenStreetMap - Population
- 34,892 (ZCTA, ACS 5-year)
- Population density
- 392 / sq mi
- Land area
- 89.1 sq mi (230.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $75,436
- Per-capita income
- $42,440
- Median age
- 53
- Households
- 15,130
- Housing units
- 19,625
- Median home value
- $282,100
- Median gross rent
- $1,293 / month
- Congressional district
- DE At-large (119th Congress)
- USDA hardiness zone
- 7b (5 to 10 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
- Area code
- 302Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 19966 with another ZIP · ZIPs within 25 miles · distance from 19966
Nearby localities
Map of ZIP code 19966
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Jan (avg low 29°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 45 | 48 | 55 | 66 | 75 | 83 | 88 | 86 | 80 | 69 | 59 | 50 |
| Avg low °F | 29 | 30 | 36 | 45 | 55 | 64 | 70 | 68 | 61 | 49 | 40 | 33 |
| Precip in | 3.0 | 2.6 | 3.9 | 3.3 | 3.6 | 4.1 | 4.1 | 4.0 | 4.5 | 4.1 | 3.2 | 3.5 |
NOAA 1991–2020 climate normals from the nearest station: GEORGETOWN SUSSEX CO AP (6.4 mi) · NOAA NCEI
Places in ZIP 19966
- 3 schools
- 2 hospitals & clinics
- 2 doctors & dentists
- 5 pharmacies
- 7 supermarkets
- 48 restaurants & cafés
- 5 bars & pubs
- 4 parks
- 13 playgrounds
- 13 gyms & sports centres
- 1 libraries
- 1 post offices
- 14 places of worship
- 12 banks
- 14 gas stations
- 1 EV charging stations
- 7 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page