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Lake Forest, IL ZIP code

The ZIP code for Lake Forest, Illinois is 60045. It is in Lake County.

Population in these ZIPs
21,074
Avg. median income
$233,100population-weighted
Typical home value
$1,231,200population-weighted
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ZIP codes within 10 miles

Lake Forest, IL ZIP code list

Lake Forest, IL ZIP codes
ZIP codePopulationMedian incomeTypical home value
6004521,074$233,125$1,231,200

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Lake Forest

Frequently asked questions

What is the ZIP code for Lake Forest, IL?

The ZIP code for Lake Forest, IL is 60045.

What county is Lake Forest, Illinois in?

Lake Forest ZIP codes are in Lake County.