zip code
highneutral (used in formal, informal, and technical contexts)
Definition
Meaning
A series of letters and/or numbers assigned to a specific postal area to facilitate mail sorting and delivery.
A system of postal codes used primarily in the United States. Can be used metaphorically in digital contexts to refer to geographic identification in data systems.
Linguistics
Semantic Notes
Originally an acronym for 'Zone Improvement Plan.' The term is strongly associated with the US postal system but is understood internationally in contexts involving US addresses.
Dialectal Variation
British vs American Usage
Differences
'Zip code' is the standard American term. The British equivalent is 'postcode.' In the UK, 'zip code' is understood but not used domestically.
Connotations
In the US, it's a neutral, technical term. In the UK/Commonwealth, using 'zip code' signals a reference to an American system or context.
Frequency
Extremely high frequency in US English; low frequency in UK domestic contexts, but common when discussing US matters.
Vocabulary
Collocations
Grammar
Valency Patterns
[enter/provide/use] + zip code[zip code] + [is/identifies/locates][live in/have] + a [specific] zip codeVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Essential for customer databases, shipping, and targeted marketing by region.
Academic
Used in demographic studies, geographic research, and public health data analysis.
Everyday
Required for online shopping forms, signing up for services, and mailing letters.
Technical
A key data field in GIS (Geographic Information Systems), logistics software, and address validation APIs.
Examples
By Part of Speech
verb
American English
- The system will zip-code the entries before sorting.
- We need to zip-code these addresses.
adjective
British English
- Please check the postcode directory.
- The postcode area is large.
American English
- They performed a zip-code analysis of the sales data.
- The zip-code database is updated monthly.
Examples
By CEFR Level
- What is your zip code?
- My zip code is 10001.
- You need to enter a valid zip code to complete the order.
- The price may change depending on your zip code.
- The service is unavailable in certain zip codes due to local regulations.
- Demographic data is often aggregated and analysed by zip code.
- The marketing campaign was tailored using zip-code-level consumer behaviour models.
- Socioeconomic disparities can be strikingly apparent across adjacent zip codes.
Learning
Memory Aids
Mnemonic
Think of a ZIPPER closing up an area neatly. A ZIP CODE 'zips up' or defines a specific postal area.
Conceptual Metaphor
A NUMBER IS AN ADDRESS / A CODE IS A LOCATOR
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate as 'зип-код' or 'код молнии'. The standard Russian equivalent is 'почтовый индекс'.
Common Mistakes
- Writing 'zipcode' as one word (standard is two words: 'zip code').
- Using a UK postcode format (e.g., 'SW1A 1AA') when an American 5+4 digit format (e.g., '90210' or '90210-1234') is required.
Practice
Quiz
In which country is the term 'zip code' the standard official term?
FAQ
Frequently Asked Questions
Yes, it stands for 'Zone Improvement Plan,' introduced by the US Postal Service in 1963.
The basic format is five digits (e.g., 12345). An extended format, ZIP+4, adds a hyphen and four more digits (e.g., 12345-6789).
You will be understood, but the correct term for a British address is 'postcode.' Use 'zip code' only when specifically referring to a US address.
Yes, 'postal code' is a generic international term. 'Zip code' is the specific US version of a postal code.