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 77520
Type Standard
Primary City Baytown
State TX
County Harris County
Acceptable Cities Beach City, Cove, Mont Belvieu, Old River Winfree, Old Rvr Wnfre
Unacceptable Bayway, Cedar Point, Garth, Lakewood, Lynchburg, Mcnair, Stewart Heights
Time Zone America/Chicago
Area Codes 281, 346, 713, 832
Latitude 29,74° N
Longitude -94,96° 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 Baytown, TX

Postal Information

ZIP Code 77521
Type Standard
Primary City Baytown
State TX
County Harris County
Acceptable Cities Mont Belvieu
Unacceptable -
Time Zone America/Chicago
Area Codes 281, 346, 713, 832, 936
Latitude 29,8° N
Longitude -94,97° 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 Baytown, TX

Postal Information

ZIP Code 77522
Type Po Box
Primary City Baytown
State TX
County Harris County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 713
Latitude 29,74° N
Longitude -94,96° 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 Baytown, TX

Postal Information

ZIP Code 77523
Type Standard
Primary City Baytown
State TX
County Chambers County
Acceptable Cities Beach City, Cove, Mont Belvieu, Old River Winfree, Old Rvr Wnfre
Unacceptable -
Time Zone America/Chicago
Area Codes 281, 346, 713, 832, 936
Latitude 29,76° N
Longitude -94,87° 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 Baytown, TX

Postal Information

ZIP Code 77661
Type Po Box
Primary City Stowell
State TX
County Chambers County
Acceptable Cities -
Unacceptable Figridge
Time Zone America/Chicago
Area Codes 409
Latitude 29,78° N
Longitude -94,37° 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 Stowell, TX

Postal Information

ZIP Code 78164
Type Standard
Primary City Yorktown
State TX
County DeWitt County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 361, 830
Latitude 28,98° N
Longitude -97,5° 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 Yorktown, TX

Postal Information

ZIP Code 78380
Type Standard
Primary City Robstown
State TX
County Nueces County
Acceptable Cities -
Unacceptable Bluntzer, Petronila, Rabb, San Pedro, South San Pedro, Violet
Time Zone America/Chicago
Area Codes 361
Latitude 27,79° N
Longitude -97,66° 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 Robstown, TX

Postal Information

ZIP Code 78626
Type Standard
Primary City Georgetown
State TX
County Williamson County
Acceptable Cities -
Unacceptable Jonah
Time Zone America/Chicago
Area Codes 512, 737
Latitude 30,64° N
Longitude -97,68° 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, TX

Postal Information

ZIP Code 78627
Type Po Box
Primary City Georgetown
State TX
County Williamson County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 512
Latitude 30,64° N
Longitude -97,68° 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, TX

Postal Information

ZIP Code 78628
Type Standard
Primary City Georgetown
State TX
County Williamson County
Acceptable Cities Andice, Sun City
Unacceptable -
Time Zone America/Chicago
Area Codes 512, 737
Latitude 30,65° N
Longitude -97,75° 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 Georgetown, TX

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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.