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zipcodes.pro — CITY/IL/ROCK-FALLS

Rock Falls ZIP code, Illinois

The ZIP code for Rock Falls, IL is 61071, and its area code is 815.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
8,587
Area code
815

NANPA lists no telephone rate centre for Rock Falls itself, so these are the area codes of the nearest one, Nelson (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Rock Falls uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Rock Falls in numbers

About 8,587 people live in Rock Falls, in 3,797 households. The median household income is $49,600 a year, 41% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $83,900 (68% below the Illinois median), and median gross rent is $754 a month. The median age is 37.7; 13.4% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 16 minutes.

Population8,587Rock Falls8,587
Households3,797Rock Falls3,797
Median age37.7Rock Falls37.7Illinois39.0US 38.9
Median household income$49,600Rock Falls$49,600Illinois$83,390US $80,734
Median home value$83,900Rock Falls$83,900Illinois$263,300US $332,700
Median gross rent$754Rock Falls$754Illinois$1,274US $1,413
Bachelor's degree or higher13.4%Rock Falls13.4%Illinois37.8%US 35.7%
Mean commute15.7 minRock Falls15.7 minIllinois27.8 minUS 26.4 min
Population density2,156 / sq miRock Falls2,156 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Rock Falls city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Rock Falls

ZIP codes with the USPS city name Rock Falls
ZIP City Type Population Median income Median home
61071 Rock Falls , IL Standard 13,581 $60,508 $102,300

Other ZIP codes overlapping Rock Falls

These ZIP codes cover part of Rock Falls but are addressed as somewhere else.

ZIP codes overlapping Rock Falls
ZIP City Type Population Median income Median home
61081 Sterling , IL Standard 20,844 $67,586 $123,400

Map of Rock Falls ZIP codes

61071

The ZIP codes of Rock Falls, IL, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Rock Falls

The nearest larger towns are Sterling (14,717 people, 1.9 mi), Dixon (14,910 people, 12 mi) and Clinton, IA (24,322 people, 29 mi).

Towns near Rock Falls
TownPopulationDistance
Sterling 14,717 1.9 mi
Dixon 14,910 12.2 mi
Morrison 3,739 14.0 mi
Mount Morris 2,726 23.4 mi
Fulton 3,709 24.8 mi
Oregon 3,851 24.8 mi
Clinton, IA 24,322 28.7 mi
Princeton 7,975 29.5 mi

More nearby: every ZIP code in Whiteside County · Illinois ZIP codes

Cite this page

zipcodes.pro. “Rock Falls, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/rock-falls

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