Postal reference / United States
21031Hunt Valley, Maryland
ZIP code 21031 is a United States postal code for Hunt Valley, Maryland. Its county association is Baltimore County. The map reference point is at 39.4805, -76.6553.
- State / territory
- Maryland
- Recorded place name
- Hunt Valley
- County association
- Baltimore
- Estimated coordinate
- 39.4805, -76.6553
View on OpenStreetMap - ZIP prefix
- 210 · 58 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Area
- Land area
- 0.935 sq mi (2023 Census Gazetteer)
Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.
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Maryland directoryOther ZIP codes in Hunt Valley, MD
Hunt Valley has 2 ZIP codes in the reference dataset.
- 21065Baltimore
Nearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 21065 | Hunt Valley | MD | Baltimore | 0.5 |
| 21030 | Cockeysville | MD | Baltimore | 1.0 |
| 21093 | Lutherville Timonium | MD | Baltimore | 3.3 |
| 21131 | Phoenix | MD | Baltimore | 4.1 |
| 21094 | Lutherville Timonium | MD | Baltimore | 4.4 |
| 21251 | Baltimore | MD | Baltimore | 4.4 |
| 21152 | Sparks Glencoe | MD | Baltimore | 4.9 |
| 21139 | Riderwood | MD | Baltimore | 4.9 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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