Winnetka is associated with the ZIP code(s) 91306. ZIP boundaries don't always match neighborhood or school-attendance lines, so use ZIP as a rough guide and verify schools and tax details at the address level.
Direct AnswerWinnetka is associated with the ZIP code(s) 91306. ZIP boundaries don't always match neighborhood or school-attendance lines, so use ZIP as a rough guide and verify schools and tax details at the address level.
Data current as of June 2026 · verify live for a specific period or address.
Winnetka ZIP codes
The Winnetka area covers 91306. ZIP codes are postal routing areas that can cross neighborhood lines and don't determine school attendance or tax rate by themselves.
Frequently Asked Questions
What ZIP codes are in Winnetka?
Winnetka is associated with the ZIP code(s) 91306. ZIP boundaries don't always match neighborhood or school-attendance lines, so use ZIP as a rough guide and verify schools and tax details at the address level.
