Residential delivery area · Illinois
ZIP Code 61071: Rock Falls, IL
ZIP code 61071 uses the postal name Rock Falls, Illinois and lies mostly in Whiteside County (89% of its land) with the rest in Lee County (Census 2020 ZIP-county file). About 14,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $60,508 (Census Bureau, ACS 2020-2024). By Census place, 6% of its land lies in Rock Falls; 95% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Rock Falls · its only residential ZIP
- County
- Whiteside County (89%); Lee County (11%)
- Census places
- Rock Falls
- Micro area
- Sterling, IL
- House districts
- IL-17 (89%), IL-16 (11%) 119th Congress, by share of land
- State
- Illinois
- Time zone
- Central
- Land area
- 72.5 sq mi · 187 people per sq mi
Where is ZIP code 61071?
61071 centers on 41.725°, -89.699° and covers 72.5 square miles of land plus 1.9 of water. It borders 6 ZIP codes: 61243, 61042, 61081, 61283, 61021, 61277.
The map draws ZIP code areas only. For the streets inside 61071, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 61071 compare with the rest of Whiteside County?
| Measure | 61071 | In Whiteside County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 13,581 | 2nd of 13 | 311th of 1,396 |
| Median household income | $61k | 6th of 6 | 657th of 797 |
| Median home value | $102k | 9th of 9 | 758th of 842 |
Its median household income is higher than in 30% of U.S. residential ZIP codes, and it is denser than 62% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 61071?
The 2020 Census counted 13,389 people in 61071; the ACS, which samples households over 2020-2024, estimates 13,581. Between the 2010 and 2020 censuses its population fell 6.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 13,581
- 2020 Census count
- 13,389−6.9% since 2010 (14,381)
- Households
- 5,810
- Median age
- 40.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 61071?
Of the 13,581 people the ACS estimates in 61071, 22.2% are under 18 and 20.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (79.6%), then Hispanic or Latino (16.2%).
- Under 1822.2%
- 18 to 6457.8%
- 65 and older20.1%
- White, not Hispanic79.6%
- Hispanic or Latino16.2%
- Other or two or more3.5%
- Black, not Hispanic0.5%
- Asian, not Hispanic0.2%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 61071 earn?
Median household income is $60,508 (ACS 2020-2024), the 6th highest of the 6 ranked ZIP codes in Whiteside County. It is not measurably different from 2015-2019 ($64,456 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $60,508±$7,708
- Income per person
- $35,211
- Below the poverty line
- 18.1%
- Unemployed (of the labor force)
- 5.2%
- Adults 25+ with a bachelor's degree
- 15.9%
- Adjusted gross income per tax return, 2022
- $57,9966,360 returns; wages 67% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 61071?
FHFA's house price index for 61071, built from repeat sales and appraisals of the same homes, rose 54% from 2015 to 2025 and rose 35% from 2020 to 2025, and moved +3.6% in 2025.
- Median home value (owners' estimate)
- $102,300
- Median gross rent
- $797
- Homes owned by their occupants
- 75.8%
- Housing units
- 6,550
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 61071?
250 business establishments had a location in this ZIP code in 2023, 9 fewer than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services45
- Retail trade38
- Construction23
- Other services (except public administration)21
- Health care and social assistance20
- Manufacturing19
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 61071?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 61243 | Deer Grove | 155 | $148k | 7.4 mi |
| 61042 | Harmon | 404 | $71k | 7.5 mi |
| 61081 | Sterling | 20,844 | $68k | 8.9 mi |
| 61283 | Tampico | 1,269 | $64k | 10.3 mi |
| 61021 | Dixon | 22,308 | $69k | 13.5 mi |
| 61277 | Prophetstown | 3,054 | $70k | 14.2 mi |
| 61037 | Galt | 145 | $70k | 5.4 mi (near) |
| 61261 | Lyndon | 656 | $64k | 10.9 mi (near) |
| 61376 | Walnut | 1,894 | $61k | 13.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.