Postal reference / United States
21150Simpsonville, Maryland
ZIP code 21150 is a United States postal code for Simpsonville, Maryland. Its county association is Howard County. The map reference point is at 39.2364, -76.9419.
- State / territory
- Maryland
- Recorded place name
- Simpsonville
- County association
- Howard
- Estimated coordinate
- 39.2364, -76.9419
View on OpenStreetMap - ZIP prefix
- 211 · 34 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.
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Browse the other 604 ZIP codes recorded for Maryland, sorted by code with place and county.
Maryland directoryNearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 21041 | Ellicott City | MD | Howard | 0.0 |
| 21029 | Clarksville | MD | Howard | 1.7 |
| 21036 | Dayton | MD | Howard | 2.9 |
| 21044 | Columbia | MD | Howard | 3.7 |
| 20777 | Highland | MD | Howard | 3.9 |
| 21794 | West Friendship | MD | Howard | 4.1 |
| 21737 | Glenelg | MD | Howard | 4.4 |
| 21738 | Glenwood | MD | Howard | 4.9 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
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