ZIP code · Grantsburg · Wisconsin · United States
ZIP code 54840 — Grantsburg
ZIP code 54840 serves Grantsburg, Wisconsin.
- Postal code
- 54840Single source Value from one source, not cross-checked.
- City
- Grantsburg
- County
- Burnett FIPS 55013
- State
- Wisconsin
- Country
- United States
- Coordinates
- 45.7953, -92.6935 — precision precise (locality)
View on OpenStreetMap - Population
- 4,706 (ZCTA, ACS 5-year)
- Population density
- 18 / sq mi
- Land area
- 255.2 sq mi (661.1 km²) (ZCTA, ACS 5-year)
- Median household income
- $63,988
- Per-capita income
- $38,232
- Median age
- 44.7
- Households
- 1,784
- Housing units
- 2,770
- Median home value
- $180,800
- Median gross rent
- $833 / month
- Congressional district
- WI-7 (119th Congress)
- USDA hardiness zone
- 4a (-30 to -25 °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
- 715Telephone 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 54840 with another ZIP · ZIPs within 25 miles · distance from 54840
Map of ZIP code 54840
Climate — monthly normals
Warmest month Jul (avg high 82°F), coldest Jan (avg low 1°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 22 | 28 | 41 | 56 | 69 | 78 | 82 | 80 | 72 | 58 | 41 | 27 |
| Avg low °F | 1 | 5 | 18 | 31 | 44 | 53 | 58 | 56 | 47 | 35 | 22 | 10 |
| Precip in | 0.9 | 0.9 | 1.6 | 2.9 | 4.1 | 4.5 | 4.6 | 4.5 | 3.7 | 3.2 | 1.8 | 1.4 |
NOAA 1991–2020 climate normals from the nearest station: GRANTSBURG (1.6 mi) · NOAA NCEI
Places in ZIP 54840
- 9 schools
- 1 hospitals & clinics
- 4 restaurants & cafés
- 20 parks
- 1 playgrounds
- 2 libraries
- 1 post offices
- 1 places of worship
- 1 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