List of cities from BALTIMORE CITY's county

ALL FIRST BANK	ARLINGTON
BALTIMORE	BALTIMORE SUNPAPERS
BANK OF AMERICA	CARROLL
CLIFTON	CLIFTON EAST END
CRESTAR BANK	DRUID
EAST CASE	EAST END
FIRMS-BUSINESS REPLY	FIRMS-COURTESY REPLY
FIRST UNION	FRANKLIN
GOVANS	HAMILTON
HAMPDEN	HARTE HANKS DIRECT MARKETING
HIGHLANDTOWN	HOUSEHOLD BANK
JOHNS HOPKINS	JOHNS HOPKINS HOSPITAL
MOUNT WASHINGTON	MT WASHINGTON
NORTHWOOD	PATTERSON
RASPEBURG	REISTERSTOWN RD PLAZA
ROLAND PARK	SHARED FIRM ZIP CODE
SOCIAL SECURITY ADMIN	SOCIAL SECURITY ADMINISTRAT
T ROWE PRICE ASSOCIATES INC	VERIZON TELEPHONE
WALBROOK	WAVERLY

What is ZIP Code?

ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan,[1] is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the code in the postal address. The basic format consists of five decimal numerical digits. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the ZIP code, a hyphen, and four more digits that determine a more precise location than the ZIP code alone. The term ZIP code was originally registered as a servicemark (a type of trademark) by the U.S. Postal Service, but its registration has since expired