Zip Code 61812 — Armstrong, IL

ZIP Code 61812 is associated with Armstrong, IL, in Vermilion County. The listed population estimate is 322; estimated density is 5.7 people per square mile. Among records with population estimates, it ranks #20 of 24 in Vermilion County and #1204 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.258690, -87.889890)

Data MetricLocal Statistic
Postal / Zip Code61812
Primary CityArmstrong
State / ProvinceIL
CountyVermilion
Total Population322
Population Density5.7 people/sq mi
TimezoneAmerica/Chicago

How 61812 Compares

MetricZIP 61812Vermilion County recordsIL records
Population estimate32272,508 (sum)12,694,745 (sum)
Population Density5.7 /sq mi----
County population rank#20 of 24----
State population rank#1204 of 1,390----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in IL

ZIP CodeCityDistancePopulation estimate
ZIP 61862Penfield4.5 mi581
ZIP 61831Collison5.4 mi160
ZIP 61865Potomac5.6 mi1,167
ZIP 61871Royal6.6 mi296
ZIP 61847Gifford7.6 mi1,144

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →