Zip Code 61243 — Deer Grove, IL

ZIP Code 61243 is associated with Deer Grove, IL, in Whiteside County. The listed population estimate is 155; estimated density is 2.3 people per square mile. Among records with population estimates, it ranks #11 of 12 in Whiteside County and #1314 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.618490, -89.678400)

Data MetricLocal Statistic
Postal / Zip Code61243
Primary CityDeer Grove
State / ProvinceIL
CountyWhiteside
Total Population155
Population Density2.3 people/sq mi
TimezoneAmerica/Chicago

How 61243 Compares

MetricZIP 61243Whiteside County recordsIL records
Population estimate15556,250 (sum)12,694,745 (sum)
Population Density2.3 /sq mi----
County population rank#11 of 12----
State population rank#1314 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 61283Tampico6.0 mi1,269
ZIP 61376Walnut6.5 mi1,894
ZIP 61071Rock Falls7.5 mi13,581
ZIP 61042Harmon7.8 mi404
ZIP 61346New Bedford8.0 mi43

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 →