Hammond, IN ZIP codes
Hammond, Indiana has 5 ZIP codes, including 1 PO Box ZIP. They are in Lake County.
- Population in these ZIPs
- 69,406
- Avg. median income
- $54,200population-weighted
- Typical home value
- $172,900population-weighted
- Metro area
- Chicago-Naperville-Elgin, IL-IN
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Hammond, IN ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 46320 | Lake County | 14,353 | $37,158 | $144,700 |
| 46323 | Lake County | 23,047 | $59,688 | $187,800 |
| 46324 | Lake County | 21,409 | $63,052 | $184,100 |
| 46325 PO Box | Lake County | — | — | — |
| 46327 | Lake County | 10,597 | $47,288 | $156,200 |
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 Hammond
- Highland 2 mi
- Munster 3 mi
- Griffith 5 mi
- East Chicago 5 mi
- Schererville 6 mi
- Gary 6 mi
- Whiting 7 mi
- Dyer 8 mi
- Merrillville 9 mi
- Saint John 9 mi
- Lake Station 10 mi
- Hobart 12 mi
Frequently asked questions
What is the ZIP code for Hammond, IN?
Hammond, IN has 5 ZIP codes: 46320, 46323, 46324, 46325 and 46327.
What county is Hammond, Indiana in?
Hammond ZIP codes are in Lake County.
Which Hammond ZIP codes are PO Boxes?
46325 is a PO Box or single-organization ZIP code; it has no residential delivery area.