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U.S. ZIP Codes Database 2026

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ZIP Code Details for Annapolis

Detailed geographic and postal record lookup for the city of Annapolis.

Postal Information

ZIP Code 20701
Type Standard
Primary City Annapolis Junction
State MD
County Anne Arundel County
Acceptable Cities Annapolis Jct
Unacceptable -
Time Zone America/New_York
Area Codes 227, 240, 301, 410, 443, 667
Latitude 39,12° N
Longitude -76,77° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Annapolis Junction, MD

Postal Information

ZIP Code 21401
Type Standard
Primary City Annapolis
State MD
County Anne Arundel County
Acceptable Cities Cape Saint Claire, Cpe St Claire
Unacceptable -
Time Zone America/New_York
Area Codes 410, 443, 667
Latitude 38,99° N
Longitude -76,55° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Annapolis, MD

Postal Information

ZIP Code 21402
Type Standard
Primary City Annapolis
State MD
County Anne Arundel County
Acceptable Cities N Severn Vlg, Naval Academy, North Severn Village
Unacceptable -
Time Zone America/New_York
Area Codes 410, 443, 667
Latitude 38,99° N
Longitude -76,47° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Annapolis, MD

Postal Information

ZIP Code 21403
Type Standard
Primary City Annapolis
State MD
County Anne Arundel County
Acceptable Cities Highland Bch
Unacceptable -
Time Zone America/New_York
Area Codes 410, 443, 667
Latitude 38,97° N
Longitude -76,5° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Annapolis, MD

Postal Information

ZIP Code 21404
Type Po Box
Primary City Annapolis
State MD
County Anne Arundel County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 410
Latitude 38,97° N
Longitude -76,5° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Annapolis, MD

Postal Information

ZIP Code 21405
Type Standard
Primary City Annapolis
State MD
County Anne Arundel County
Acceptable Cities Sherwood Forest, Sherwood Frst
Unacceptable -
Time Zone America/New_York
Area Codes 410, 443, 667
Latitude 39,03° N
Longitude -76,56° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Annapolis, MD

Postal Information

ZIP Code 21409
Type Standard
Primary City Annapolis
State MD
County Anne Arundel County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 410, 443, 667
Latitude 39,02° N
Longitude -76,45° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Annapolis, MD

Postal Information

ZIP Code 21411
Type Unique
Primary City Annapolis
State MD
County Anne Arundel County
Acceptable Cities -
Unacceptable Comptroller Of The Treasury
Time Zone America/New_York
Area Codes 410
Latitude 38,97° N
Longitude -76,5° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Annapolis, MD

Postal Information

ZIP Code 21412
Type Standard
Primary City Annapolis
State MD
County Anne Arundel County
Acceptable Cities -
Unacceptable Bancroft Hall
Time Zone America/New_York
Area Codes 410
Latitude 38,97° N
Longitude -76,5° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Annapolis, MD

Postal Information

ZIP Code 28081
Type Standard
Primary City Kannapolis
State NC
County Cabarrus County
Acceptable Cities -
Unacceptable Centerview, Fisher Town, Glass, Royal Oaks, Shady Brook
Time Zone America/New_York
Area Codes 704, 980
Latitude 35,5° N
Longitude -80,67° W

About U.S. ZIP Codes

U.S. ZIP Codes are 5-digit postal codes introduced in 1963 by the USPS to improve mail sorting efficiency. The first digit represents a broad region, the next two identify a sectional center facility, and the final two help pinpoint a local post office or delivery area.

Geographic Breakdown:

  • 1st Digit: Represents a group of states or a broad national region.
  • 2nd/3rd Digits: Represent a regional area or large city.
  • 4th/5th Digits: Identify specific post offices or delivery zones.

ZIP Codes support physical delivery, routing analytics, geocoding, tax calculations, and location-based research.

Geographic Map of Kannapolis, NC

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Postal context

About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.