How do I find a ZIP code by city or state?

You can find ZIP codes by city or state using our search tool. Just enter the city or state name, and you'll see all related ZIP codes instantly.

What is a ZIP+4 code?

A ZIP+4 code adds four digits to the basic five-digit ZIP code. It helps the USPS deliver mail more precisely to specific addresses or buildings.

Are ZIP codes the same as postal codes?

ZIP codes are the U.S. version of postal codes, used by the USPS to identify delivery areas. Other countries use postal codes with different formats.

All ZIP Codes for Gaithersburg Maryland – Postal Code Lookup

Gaithersburg ZIP Code

The city of Gaithersburg is assigned specific ZIP Code(s) by the United States Postal Service (USPS) to make mail delivery accurate and efficient. A ZIP Code in Gaithersburg helps identify the correct postal area, ensuring that letters, parcels, and packages reach the right neighborhood or post office without delay. For residents, businesses, and visitors, knowing the correct Gaithersburg ZIP Code is important not only for mailing purposes but also for location-based services, navigation, and demographic reference.

Gaithersburg

Post Office	Gaithersburg
Division	Montgomery
Pincode	20878

Gaithersburg

Post Office	Gaithersburg
Division	Montgomery
Pincode	20877

Gaithersburg

Post Office	Gaithersburg
Division	Montgomery
Pincode	20879

Gaithersburg

Post Office	Gaithersburg
Division	Montgomery
Pincode	20882

Gaithersburg

Post Office	Gaithersburg
Division	Montgomery
Pincode	20899

Gaithersburg

Post Office	Gaithersburg
Division	Montgomery
Pincode	20883

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Zip Codes in Gaithersburg, Maryland

Zip Code list in Montgomery for your selected city Gaithersburg is shown below. Use these ZIP Codes to ensure accurate mail delivery, business operations, or location reference.

About Gaithersburg, Maryland ZIP Codes

Gaithersburg is located in Montgomery County, Maryland. The United States Postal Service (USPS) assigns multiple ZIP Codes in this region to simplify mail distribution, navigation, and address identification. Each ZIP Code in Gaithersburg covers a specific neighborhood or area, which is important for residents, businesses, and government offices. Having the correct ZIP Code ensures smooth delivery of letters, online orders, and official documents.

Why Knowing the ZIP Code is Important?

Ensures accurate and timely mail delivery
Helps businesses and eCommerce platforms verify addresses
Useful for demographic research and census data
Required for utilities, banking, and government services

Frequently Asked Questions (FAQs) about Gaithersburg ZIP Codes

The primary ZIP Code for Gaithersburg, Maryland depends on the specific neighborhood. Use our list above to find the correct code.

Gaithersburg has multiple ZIP Codes covering different areas of the city. Check the table above for the complete list.

You can use our ZIP Code lookup tool by selecting the city, county, and state to locate the right code for your address.

All ZIP Codes in Gaithersburg are assigned and managed by the United States Postal Service (USPS) for accurate mail sorting and delivery.

Yes, in many cases a single ZIP Code can cover more than one neighborhood or locality in Gaithersburg to simplify mail distribution.

ZIP Codes usually remain stable for decades, but USPS may introduce new codes or adjust boundaries when population grows or new delivery routes are added in Gaithersburg.