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Zip Code 61275 — Port Byron, IL

ZIP Code 61275 is associated with Port Byron, IL, in Rock Island County. The listed population estimate is 4,253; estimated density is 49.4 people per square mile. Among records with population estimates, it ranks #7 of 16 in Rock Island County and #508 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.600160, -90.297810)

Data MetricLocal Statistic
Postal / Zip Code61275
Primary CityPort Byron
State / ProvinceIL
CountyRock Island
Total Population4,253
Population Density49.4 people/sq mi
TimezoneAmerica/Chicago

How 61275 Compares

MetricZIP 61275Rock Island County recordsIL records
Population estimate4,253143,264 (sum)12,694,745 (sum)
Population Density49.4 /sq mi----
County population rank#7 of 16----
State population rank#508 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 61278Rapids City2.7 mi678
ZIP 61257Hillsdale3.9 mi844
ZIP 61256Hampton6.0 mi1,926
ZIP 61236Barstow6.8 mi34
ZIP 61242Cordova7.2 mi1,135

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 →