U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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ZIP Code Details for Tow

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

Postal Information

ZIP Code 01007
Type Standard
Primary City Belchertown
State MA
County Hampshire County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 351, 413, 978
Latitude 42,27° N
Longitude -72,4° 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 Belchertown, MA

Postal Information

ZIP Code 01267
Type Standard
Primary City Williamstown
State MA
County Berkshire County
Acceptable Cities -
Unacceptable Williamstn, Wmstown
Time Zone America/New_York
Area Codes 413, 518, 838
Latitude 42,7° N
Longitude -73,2° 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 Williamstown, MA

Postal Information

ZIP Code 01469
Type Standard
Primary City Townsend
State MA
County Middlesex County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 351, 978
Latitude 42,66° N
Longitude -71,7° 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 Townsend, MA

Postal Information

ZIP Code 01474
Type Standard
Primary City West Townsend
State MA
County Middlesex County
Acceptable Cities Townsend, W Townsend
Unacceptable -
Time Zone America/New_York
Area Codes 351, 603, 978
Latitude 42,66° N
Longitude -71,74° 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 West Townsend, MA

Postal Information

ZIP Code 01775
Type Standard
Primary City Stow
State MA
County Middlesex County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 351, 978
Latitude 42,43° N
Longitude -71,5° 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 Stow, MA

Postal Information

ZIP Code 01833
Type Standard
Primary City Georgetown
State MA
County Essex County
Acceptable Cities Haverhill
Unacceptable -
Time Zone America/New_York
Area Codes 351, 978
Latitude 42,73° N
Longitude -70,98° 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 Georgetown, MA

Postal Information

ZIP Code 02129
Type Standard
Primary City Charlestown
State MA
County Suffolk County
Acceptable Cities Boston
Unacceptable -
Time Zone America/New_York
Area Codes 617, 857
Latitude 42,38° N
Longitude -71,06° 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 Charlestown, MA

Postal Information

ZIP Code 02456
Type Po Box
Primary City New Town
State MA
County Middlesex County
Acceptable Cities -
Unacceptable Newton
Time Zone America/New_York
Area Codes 617
Latitude 42,33° N
Longitude -71,2° 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 New Town, MA

Postal Information

ZIP Code 02471
Type Po Box
Primary City Watertown
State MA
County Middlesex County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 617
Latitude 42,36° N
Longitude -71,17° 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 Watertown, MA

Postal Information

ZIP Code 02472
Type Standard
Primary City Watertown
State MA
County Middlesex County
Acceptable Cities E Watertown, East Watertown
Unacceptable -
Time Zone America/New_York
Area Codes 339, 617, 781, 857
Latitude 42,37° N
Longitude -71,18° 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 Watertown, MA

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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.