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 Bay

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

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 78340
Type Standard
Primary City Bayside
State TX
County Refugio County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 361
Latitude 28,09° N
Longitude -97,21° 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 Bayside, TX

Postal Information

ZIP Code 78657
Type Standard
Primary City Horseshoe Bay
State TX
County Llano County
Acceptable Cities Cottonwd Shrs, Cottonwood Shores, Marble Falls
Unacceptable -
Time Zone America/Chicago
Area Codes 325, 830
Latitude 30,53° N
Longitude -98,38° 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 Horseshoe Bay, TX

Postal Information

ZIP Code 81122
Type Standard
Primary City Bayfield
State CO
County La Plata County
Acceptable Cities Chimney Rock
Unacceptable Gem Village, Vallecito
Time Zone America/Denver
Area Codes 970
Latitude 37,23° N
Longitude -107,59° 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 Bayfield, CO

Postal Information

ZIP Code 83803
Type Standard
Primary City Bayview
State ID
County Kootenai County
Acceptable Cities -
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 208, 986
Latitude 48,02° N
Longitude -116,37° 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 Bayview, ID

Postal Information

ZIP Code 88023
Type Standard
Primary City Bayard
State NM
County Grant County
Acceptable Cities Vanadium
Unacceptable -
Time Zone America/Denver
Area Codes 575
Latitude 32,72° N
Longitude -108,09° 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 Bayard, NM

Postal Information

ZIP Code 88036
Type Po Box
Primary City Fort Bayard
State NM
County Grant County
Acceptable Cities Silver City
Unacceptable Ft Bayard
Time Zone America/Denver
Area Codes 505
Latitude 32,79° N
Longitude -108,14° 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 Fort Bayard, NM

Postal Information

ZIP Code 89402
Type Po Box
Primary City Crystal Bay
State NV
County Washoe County
Acceptable Cities -
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 530, 775
Latitude 39,23° N
Longitude -120° 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 Crystal Bay, NV

Postal Information

ZIP Code 93442
Type Standard
Primary City Morro Bay
State CA
County San Luis Obispo County
Acceptable Cities -
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 805, 820
Latitude 35,38° N
Longitude -120,78° 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 Morro Bay, CA

Postal Information

ZIP Code 93443
Type Po Box
Primary City Morro Bay
State CA
County San Luis Obispo County
Acceptable Cities -
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 805
Latitude 35,36° N
Longitude -120,85° 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 Morro Bay, CA

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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.