ZIP Code 61812

Zip Code: 61812
Type: Standard
Official USPS city name: Armstrong
Official USPS State Code: IL
Official State Name: Illinois
ZCTA: TRUE
Population: 387.0
Density: 5.6
Primary Official County Code: 17183
Primary Official County Name: Vermilion
Official County Name: Vermilion
Official County Code: 17183
Imprecise: FALSE
Military: FALSE
Timezone: America/Chicago (09:07 AM Wednesday, August 27 2025-08-27 (GMT -0500))
Geo Point: 40.25008, -87.88668