ZIP Code 62943
About Grantsburg
Grantsburg is an unincorporated community in Johnson County, Illinois, United States. Grantsburg is located on Illinois Route 146 near the Shawnee National Forest, east of Vienna. Grantsburg has a post office, with the ZIP code 62943.
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Area Profile
US Census (ACS 5-year · Gazetteer)
324
population
$54,688
median household income
9
people / sq mi
$132,000
median home value
36.2
median age
164
housing units
131
households
37.5
land area (sq mi)