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U.S. ZIP Codes Database 2026

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ZIP Code Details for Upper Marlboro

Detailed geographic and postal record lookup for the city of Upper Marlboro.

Postal Information

ZIP Code 20772
Type Standard
Primary City Upper Marlboro
State MD
County Prince George's County
Acceptable Cities Uppr Marlboro
Unacceptable Marlboro
Time Zone America/New_York
Area Codes 227, 240, 301, 410, 443, 667
Latitude 38,81° N
Longitude -76,75° 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 Upper Marlboro, MD

Postal Information

ZIP Code 20773
Type Po Box
Primary City Upper Marlboro
State MD
County Prince George's County
Acceptable Cities Uppr Marlboro
Unacceptable -
Time Zone America/New_York
Area Codes 240
Latitude 38,81° N
Longitude -76,75° 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 Upper Marlboro, MD

Postal Information

ZIP Code 20774
Type Standard
Primary City Upper Marlboro
State MD
County Prince George's County
Acceptable Cities Glenarden, Kettering, Largo, Springdale, Uppr Marlboro, Upr Marlboro
Unacceptable -
Time Zone America/New_York
Area Codes 227, 240, 301, 410, 443, 667
Latitude 38,87° 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 Upper Marlboro, MD

Postal Information

ZIP Code 20775
Type Po Box
Primary City Upper Marlboro
State MD
County Prince George's County
Acceptable Cities Uppr Marlboro
Unacceptable Kettering
Time Zone America/New_York
Area Codes 240
Latitude 38,81° N
Longitude -76,75° 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 Upper Marlboro, MD

Postal Information

ZIP Code 20792
Type Po Box
Primary City Upper Marlboro
State MD
County Prince George's County
Acceptable Cities Largo, Uppr Marlboro
Unacceptable -
Time Zone America/New_York
Area Codes 240
Latitude 38,82° N
Longitude -76,75° 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 Upper Marlboro, MD

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.