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Zip Code 61820 — Champaign, IL

ZIP Code 61820 is associated with Champaign, IL, in Champaign County. The listed population estimate is 40,599; estimated density is 2,642.2 people per square mile. Among records with population estimates, it ranks #1 of 29 in Champaign County and #72 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.112000, -88.244230)

Data MetricLocal Statistic
Postal / Zip Code61820
Primary CityChampaign
State / ProvinceIL
CountyChampaign
Total Population40,599
Population Density2,642.2 people/sq mi
TimezoneAmerica/Chicago

How 61820 Compares

MetricZIP 61820Champaign County recordsIL records
Population estimate40,599208,555 (sum)12,694,745 (sum)
Population Density2,642.2 /sq mi----
County population rank#1 of 29----
State population rank#72 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 61821Champaign1.7 mi28,611
ZIP 61801Urbana1.7 mi27,891
ZIP 61822Champaign3.6 mi27,642
ZIP 61874Savoy4.3 mi8,811
ZIP 61802Urbana5.1 mi20,293

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 →