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Chicago ZIP codes: US ZIP code list for Chicago, Illinois (IL)

Quick answer

Chicago, Illinois has 12 US ZIP codes, running 60601 to 60632 inside Cook County. Each carries the same 10.25% combined sales tax rate. ZIP boundaries are postal delivery routes, not tax boundaries — a code that crosses a city or district line can hold more than one rate, so destination-based sellers should validate by full street address.

ZIP codes
12Median covered metro: 12
Number span
3260601 to 60632
Sorting prefixes
606USPS sectional centers
Sales tax
10.25%Same in every listed code

Chicago ZIP code footprint

How Chicago's ZIP footprint compares with national norms.

12 ZIP codes are listed for Chicago, covering a population of 2,664,452. They span 32 numbers, 60601 through 60632. The median covered metro on this site lists 12 codes; Chicago ranks 2 of 94 by count. Large metros carry more codes because USPS splits a delivery area once carrier volume outgrows one route cluster, not because the city is geographically bigger.

All 12 codes share the 606 prefix. That first trio is the sectional center facility — the USPS plant that sorts mail for the region — so every piece addressed to Chicago passes through one facility. The range runs 60601 to 60632.

ZIP boundaries are carrier routes, not city limits. USPS redraws them when delivery volume shifts; Illinois redraws tax and municipal lines on a different schedule entirely. A Chicago mailing address does not prove an address sits inside Chicago city limits, and a single code can straddle the boundary.

ZIP codes in Chicago

All within Cook County, Illinois.

Source: Illinois Department of Revenue rate tables · rates as published for 2026

Why ZIP-based rate lookup is unreliable

USPS redraws ZIP codes when carrier routes change. Tax jurisdictions move with annexations, county lines and voter-approved districts. The two never line up. In Illinois, local jurisdictions set their own increments, so remote sellers should validate the full delivery address against the Illinois Department of Revenue lookup at the time of sale.

Frequently asked questions

Common questions about this area.

How many ZIP codes does Chicago have?
12. They run from 60601 to 60632 across 1 sectional center prefix (606), spanning 32 numbers.
What is the first ZIP code in Chicago, IL?
60601 is the lowest-numbered code serving Chicago. Numbering runs roughly northeast to west nationally, so Chicago's 606 prefix reflects its position in the Illinois sorting network, not its size.
Do all Chicago ZIP codes have the same sales tax rate?
Inside Chicago city limits, yes — 10.25% applies. A code that extends past the city line can carry a different rate on part of its territory. Validate by street address, not ZIP, when the sale is destination-based. Confirm current rates with your state revenue agency before filing.

Chicago sales tax breakdown and calculator

Other Chicago datasets on this site.

Statewide: Illinois cities · Illinois ZIP codes · Illinois sales tax · Illinois counties