ZIP Code 21240
21240 is one of Maryland's ZIP codes, delivering to addresses in Baltimore, Anne Arundel County.
- City
- Baltimore
- County
- Anne Arundel County
- State
- Maryland
- Prefix
- 212xx
Where this code sits
21240 is part of the 212xx range, the group of codes handled by one mail processing centre. Baltimore is served by 42 ZIP codes in total; the full list, with the county each falls in, is on the Baltimore page.
Baltimore Maryland ZIP codes →
Area codes over the same ground
Postal and telephone geography are drawn separately, so these codes cover the area 21240 delivers to without sharing its boundary.
- 227 Area code 227
- 240 Area code 240
- 301 Area code 301
- 410 Area code 410
- 443 Area code 443
- 667 Area code 667
ZIP codes nearest 21240
| ZIP code | Distance | Delivers to |
|---|---|---|
| ZIP code 21077 | 1.9 mi | Harmans, MD |
| ZIP code 21090 | 2.4 mi | Linthicum Heights, MD |
| ZIP code 21061 | 2.5 mi | Glen Burnie, MD |
| ZIP code 21076 | 2.9 mi | Hanover, MD |
| ZIP code 21144 | 3.6 mi | Severn, MD |
| ZIP code 21227 | 4.0 mi | Halethorpe, MD |
| ZIP code 21225 | 4.7 mi | Brooklyn, MD |
| ZIP code 21075 | 4.8 mi | Elkridge, MD |
Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope ZIP code 21240. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.