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Zip Code 61350 — Ottawa, IL

61350 is a ZIP Code associated with Ottawa, IL, located within LaSalle. The postal region supports an estimated population of 23,713 residents across Data Pending housing units, with a population density of 60.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.371520, -88.861570)

Data MetricLocal Statistic
Postal / Zip Code61350
Primary CityOttawa
State / ProvinceIL
CountyLaSalle
Total Population23,713
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density60.0 people/sq mi
TimezoneAmerica/Chicago

How 61350 Compares

MetricZIP 61350LaSalle CountyIL State Average
Population23,713106,52412,694,745
Median IncomeData PendingN/AN/A
Population Density60.0 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 60557Wedron7.0 miN/AN/A
Zip 61373Utica7.2 mi2,123N/A
Zip 61341Marseilles9.0 mi7,692N/A
Zip 61325Grand Ridge9.7 mi949N/A
Zip 60549Serena10.3 mi784N/A

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 →