21240 is the ZIP Code for Baltimore-Washington International/Thurgood Marshall Airport in Baltimore, Maryland. 21240 is entirely within Anne Arundel County. Regionally, 21240 is located in Metro Baltimore.
ZIP Code Name | Baltimore |
Organization | Baltimore-Washington International/Thurgood Marshall Airport |
Primary County | Anne Arundel County |
ZIP Code Type | Standard |
Area Code(s) | 410 / 443 / 667 |
Current Time | EST |
Coordinates | 39.17478943,-76.67215729 |
Adjacent ZIP Codes | |
Region | Metro Baltimore |
Metropolitan/Micropolitan Stat Area | Baltimore-Columbia-Towson, MD |
Time Zone | Eastern Standard Time |
IANA Timezone | America/New_York |
Area | 4 Square Miles |
School Districts in 21240 | |
Elementary Schools in 21240 | |
Middle Schools in 21240 | |
High Schools in 21240 |
Plant Hardiness Zone | Zone 7b: 5F to 10F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Average First Frost Date | October 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Average Last Frost Date | April 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Koppen-Geiger Climate Zone | Cfa - Humid Subtropical Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Ecoregion | 65n - Chesapeake Rolling Coastal Plain | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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