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County · GEOID 17201

Winnebago County, IL ZIP codes

26 ZIP/ZCTAs intersecting this county.

ACS 2023 population

283,289

Median household income

$64,363

Median home value

$155,100

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: County Winnebago County (GEOID 17201). Methodology

Combined population of ZIP/ZCTAs intersecting this county: 332,190 (26 ZIPs).

Combined population of ZIP/ZCTAs intersecting this county. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census county ACS headline above. Methodology

Winnebago County, IL ZIP code map

Census ZIP Code Tabulation Areas in Winnebago County, IL
ZIP Code Tabulation Areas inside Winnebago County, IL. Boundaries: U.S. Census Bureau. Methodology · Data sources
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ZIP/ZCTA overlap with Winnebago County

Population overlap

Share of each ZIP/ZCTA’s population located within Winnebago County, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.

ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

ZIP codes intersecting Winnebago County

ZIPCityCountyPopulationIncome
61008BelvidereBoone County33,697$75,833
61011CaledoniaBoone County2,743$136,172
61016Cherry ValleyWinnebago County5,166$92,865
61019DavisStephenson County3,341$100,066
61020Davis JunctionOgle County3,197$96,058
61024DurandWinnebago County2,264$73,152
61047Leaf RiverOgle County1,728$76,389
61063PecatonicaWinnebago County4,257$88,063
61072RocktonWinnebago County11,342$102,604
61073RoscoeWinnebago County20,008$104,534
61077SewardWinnebago County101—
61079ShirlandWinnebago County220$46,176
61080South BeloitWinnebago County11,062$78,533
61084Stillman ValleyOgle County3,166$93,264
61088WinnebagoWinnebago County5,992$94,286
61101RockfordWinnebago County19,671$45,260
61102RockfordWinnebago County16,620$42,506
61103RockfordWinnebago County23,238$47,390
61104RockfordWinnebago County17,584$32,161
61107RockfordWinnebago County29,473$75,492
61108RockfordWinnebago County30,202$63,046
61109RockfordWinnebago County26,714$61,702
61111Loves ParkWinnebago County22,838$58,391
61112RockfordWinnebago County116—
61114RockfordWinnebago County15,026$83,472
61115Machesney ParkWinnebago County22,424$73,771

USPS associates these ZIPs with Winnebago County

These codes list Winnebago County as a primary or acceptable city. They are not used for the ACS headline.