Markham Illinois ZIP Codes
Markham holds a single ZIP code.
Every ZIP code in Markham
| ZIP code | County |
|---|---|
| 60428 | Will County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Markham codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Markham. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Markham ZIP code begins 604. Those first three digits identify the sectional center facility that processes mail for this part of Illinois. Statewide that range covers 83 ZIP codes, so Markham accounts for 1% of it.
Every Illinois ZIP prefix and the region it covers →
Area codes covering Markham
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Markham occupies.
Markham Illinois area codes in full →
Where Markham's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Markham
| City | Distance | ZIP codes |
|---|---|---|
| Hazel Crest Illinois ZIP codes | 1.8 mi | 1 ZIP code |
| Posen Illinois ZIP codes | 2.0 mi | 1 ZIP code |
| Harvey Illinois ZIP codes | 2.1 mi | 1 ZIP code |
| Midlothian Illinois ZIP codes | 2.5 mi | 1 ZIP code |
| Country Club Hills Illinois ZIP codes | 3.1 mi | 1 ZIP code |
| Robbins Illinois ZIP codes | 3.1 mi | 1 ZIP code |
| Homewood Illinois ZIP codes | 3.2 mi | 1 ZIP code |
| Oak Forest Illinois ZIP codes | 3.3 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.