Willow Lake, IL ZIP codes

1 ZIP/ZCTA intersecting this Census place (CDP) in Stephenson County.

ACS 2023 population

838

Median household income

$93,750

Median home value

$154,100

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Willow Lake (GEOID 1782029). Methodology

Combined population of ZIP/ZCTAs intersecting this place: 29,072 (1 ZIPs).

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

Map of Willow Lake, IL

Census place boundary and intersecting ZIP Code Tabulation Areas for Willow Lake, IL — Census place boundary for Willow Lake, IL. Intersecting ZCTAs may extend past the city limit. Not a USPS city limit. Boundaries: U.S. Census Bureau. Methodology · Data sources

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ZIP/ZCTA overlap with Willow Lake

Population overlap

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

610323.5%

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

ZIP codes intersecting Willow Lake

ZIP	City	County	Population	Income
61032	Freeport	Stephenson County	29,072	$54,179