Looking for a Annapolis ZIP code or trying to match a ZIP to its telephone area code? This directory maps the ZIP codes of Annapolis, Maryland, to their neighborhoods, counties, and the area codes that serve them. Use it to address mail correctly, verify a caller’s location, or understand how Annapolis’s postal and telephone geography line up.
Annapolis ZIP Codes & Area Codes at a Glance
| Detail | Information |
|---|---|
| Total ZIP Codes | 3+ |
| Primary & Overlay Area Codes | 410, 443, 667 |
| Major Counties | Anne Arundel County |
| Time Zone | Eastern Time (ET, UTC-5 / UTC-4) |
Annapolis ZIP Code Directory
The table below lists major Annapolis ZIP codes with the neighborhood or district each covers, the telephone area code that serves it, and the county it falls in.
| ZIP Code | Neighborhood / District | Area Code | County |
|---|---|---|---|
| 21401 | Historic Downtown / West | 410 | Anne Arundel |
| 21403 | Eastport / South | 410 | Anne Arundel |
| 21409 | East / Cape St. Claire edge | 410 | Anne Arundel |
Beyond the neighborhoods listed above, Annapolis also has ZIP codes reserved for post-office boxes, large-volume business mailers, universities, and government facilities that do not correspond to a single residential district. When you are unsure which code to use, the USPS ZIP Code Lookup confirms the exact ZIP for any street address, while the area code shown in each row indicates the telephone prefix that most commonly serves that part of Annapolis. Mail sorted to the correct ZIP+4 moves faster and is less likely to be delayed or returned.
How Annapolis ZIP Codes and Area Codes Align
A ZIP code is a postal routing number, while an area code is a telephone routing number, so the two systems do not map one-to-one. In Annapolis, the 410, 443, 667 area codes overlap the same territory that dozens of ZIP codes divide up. A single ZIP code can contain phone numbers from more than one area code, and a single area code spans many ZIP codes. For a full breakdown of the telephone side, see the Annapolis area code guide.
Because Maryland uses 10-digit dialing, always dial the area code plus the seven-digit number when calling a Annapolis line, even locally. When you only have a ZIP code, the directory above is the quickest way to see which area code most likely serves that part of the city.
Postal & Telecom Scam Warnings in Annapolis
As the state capital and home to the Naval Academy, watch for government-impersonation and military-targeted scams, plus utility-shutoff robocalls. Across Annapolis ZIP codes, watch for USPS “undelivered package” smishing texts that ask you to pay a small redelivery fee, address-change and mail-hold fraud, and area-code spoofing that makes robocalls appear to come from a local Annapolis number. The Postal Service never texts you a payment link for a package, and legitimate callers do not demand gift cards or wire transfers. Report mail fraud to the U.S. Postal Inspection Service and unwanted calls to the FTC at reportfraud.ftc.gov.
Frequently Asked Questions
How many ZIP codes does Annapolis have?
Annapolis has approximately 3+ ZIP codes covering its neighborhoods and districts across Anne Arundel County.
What area codes serve Annapolis?
Annapolis is served by the 410, 443, 667 area codes. See the Annapolis area code guide for full details.
Do ZIP codes and area codes match up in Annapolis?
Not exactly. ZIP codes route mail and area codes route calls, so one ZIP code can include more than one area code and each area code spans many ZIP codes. The directory above shows the most common pairing for each ZIP.
What is the main ZIP code for Annapolis?
Annapolis’s core ZIP codes are listed at the top of the directory table above; downtown and central neighborhoods usually carry the lowest-numbered ZIP codes in the city.
Are ZIP codes and area codes the same thing?
No. A ZIP code is a five-digit postal code used to route mail, while an area code is the three-digit prefix used to route telephone calls. Annapolis uses both systems, but they were designed independently and cover different-sized areas, which is why one ZIP code can overlap more than one area code.
What time zone is Annapolis in?
Annapolis observes Eastern Time (ET, UTC-5 / UTC-4).