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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 Lake

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

Postal Information

ZIP Code 50432
Type Po Box
Primary City Crystal Lake
State IA
County Hancock County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 641
Latitude 43,22° N
Longitude -93,79° 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 Lake, IA

Postal Information

ZIP Code 50450
Type Standard
Primary City Lake Mills
State IA
County Winnebago County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 507, 641
Latitude 43,41° N
Longitude -93,53° 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 Lake Mills, IA

Postal Information

ZIP Code 50588
Type Standard
Primary City Storm Lake
State IA
County Buena Vista County
Acceptable Cities Lakeside
Unacceptable Bel Air Beach, Casino Beach, Juniata, Sulphur Springs, West Storm Lake
Time Zone America/Chicago
Area Codes 712
Latitude 42,64° N
Longitude -95,19° 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 Storm Lake, IA

Postal Information

ZIP Code 51347
Type Standard
Primary City Lake Park
State IA
County Dickinson County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 507, 712
Latitude 43,44° N
Longitude -95,32° 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 Lake Park, IA

Postal Information

ZIP Code 51360
Type Standard
Primary City Spirit Lake
State IA
County Dickinson County
Acceptable Cities Orleans
Unacceptable Crandalls Lodge, Egralharve, Methodist Camp, Montgomery, Templar Park, Triboji Beach, Wahpeton
Time Zone America/Chicago
Area Codes 507, 712
Latitude 43,42° N
Longitude -95,11° 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 Spirit Lake, IA

Postal Information

ZIP Code 51449
Type Standard
Primary City Lake City
State IA
County Calhoun County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 712
Latitude 42,26° N
Longitude -94,73° 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 Lake City, IA

Postal Information

ZIP Code 51450
Type Standard
Primary City Lake View
State IA
County Sac County
Acceptable Cities Carnarvon
Unacceptable -
Time Zone America/Chicago
Area Codes 712
Latitude 42,3° N
Longitude -95,04° 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 Lake View, IA

Postal Information

ZIP Code 51466
Type Standard
Primary City Wall Lake
State IA
County Sac County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 712
Latitude 42,26° N
Longitude -95,09° 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 Wall Lake, IA

Postal Information

ZIP Code 51510
Type Standard
Primary City Carter Lake
State IA
County Pottawattamie County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 402, 531, 712
Latitude 41,29° N
Longitude -95,92° 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 Carter Lake, IA

Postal Information

ZIP Code 52536
Type Standard
Primary City Blakesburg
State IA
County Wapello County
Acceptable Cities -
Unacceptable Munterville
Time Zone America/Chicago
Area Codes 641
Latitude 40,96° N
Longitude -92,63° 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 Blakesburg, IA

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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.