ZIP code · Duluth · Minnesota · United States
ZIP code 55816 — Duluth
ZIP code 55816 serves Duluth, Minnesota.
- Postal code
- 55816Single source Value from one source, not cross-checked.
- City
- Duluth
- County
- St. Louis
- State
- Minnesota
- Country
- United States
- Coordinates
- 46.7833, -92.1066 — precision precise (locality)
View on OpenStreetMap - USDA hardiness zone
- 5a (-20 to -15 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 218Telephone 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 55816 with another ZIP · ZIPs within 25 miles · distance from 55816
Climate — monthly normals
Warmest month Jul (avg high 75°F), coldest Jan (avg low 4°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 21 | 26 | 35 | 45 | 56 | 66 | 75 | 74 | 66 | 52 | 39 | 27 |
| Avg low °F | 4 | 8 | 19 | 31 | 41 | 49 | 58 | 60 | 51 | 39 | 26 | 13 |
NOAA 1991–2020 climate normals from the nearest station: DULUTH HARBOR STN (1.3 mi) · NOAA NCEI
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 · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page