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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 Hayward

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

Postal Information

ZIP Code 54843
Type Standard
Primary City Hayward
State WI
County Sawyer County
Acceptable Cities N Woods Beach, North Woods Beach
Unacceptable Lco Commercial Ctr
Time Zone America/Chicago
Area Codes 534, 715
Latitude 46,01° N
Longitude -91,48° 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 Hayward, WI

Postal Information

ZIP Code 56043
Type Standard
Primary City Hayward
State MN
County Freeborn County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 507
Latitude 43,64° N
Longitude -93,24° 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 Hayward, MN

Postal Information

ZIP Code 94540
Type Po Box
Primary City Hayward
State CA
County Alameda County
Acceptable Cities -
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 510
Latitude 37,65° N
Longitude -122,09° 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 Hayward, CA

Postal Information

ZIP Code 94541
Type Standard
Primary City Hayward
State CA
County Alameda County
Acceptable Cities -
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 341, 510
Latitude 37,67° N
Longitude -122,08° 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 Hayward, CA

Postal Information

ZIP Code 94542
Type Standard
Primary City Hayward
State CA
County Alameda County
Acceptable Cities -
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 341, 510
Latitude 37,65° N
Longitude -122,04° 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 Hayward, CA

Postal Information

ZIP Code 94543
Type Po Box
Primary City Hayward
State CA
County Alameda County
Acceptable Cities -
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 510
Latitude 37,67° N
Longitude -122,08° 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 Hayward, CA

Postal Information

ZIP Code 94544
Type Standard
Primary City Hayward
State CA
County Alameda County
Acceptable Cities -
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 341, 510
Latitude 37,63° N
Longitude -122,04° 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 Hayward, CA

Postal Information

ZIP Code 94545
Type Standard
Primary City Hayward
State CA
County Alameda County
Acceptable Cities -
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 341, 510
Latitude 37,62° N
Longitude -122,11° 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 Hayward, CA

Postal Information

ZIP Code 94557
Type Po Box
Primary City Hayward
State CA
County Alameda County
Acceptable Cities Mount Eden
Unacceptable -
Time Zone America/Los_Angeles
Area Codes 510
Latitude 37,62° N
Longitude -122,1° 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 Hayward, CA

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.