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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 River

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

Postal Information

ZIP Code 54521
Type Standard
Primary City Eagle River
State WI
County Vilas County
Acceptable Cities -
Unacceptable Clearwater Lake, Clearwater Lk, Cloverland, Washington
Time Zone America/Chicago
Area Codes 534, 715
Latitude 45,92° N
Longitude -89,25° 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 Eagle River, WI

Postal Information

ZIP Code 54615
Type Standard
Primary City Black River Falls
State WI
County Jackson County
Acceptable Cities Blk River Fls
Unacceptable Blk Riv Falls
Time Zone America/Chicago
Area Codes 534, 608, 715
Latitude 44,29° N
Longitude -90,84° 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 Black River Falls, WI

Postal Information

ZIP Code 54847
Type Standard
Primary City Iron River
State WI
County Bayfield County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 534, 715
Latitude 46,56° N
Longitude -91,4° 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 Iron River, WI

Postal Information

ZIP Code 54965
Type Standard
Primary City Pine River
State WI
County Waushara County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 534, 715, 920
Latitude 44,15° N
Longitude -89,08° 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 Pine River, WI

Postal Information

ZIP Code 55330
Type Standard
Primary City Elk River
State MN
County Sherburne County
Acceptable Cities Burns Township, Burns Twp, Nowthen, Otsego
Unacceptable Ramsey
Time Zone America/Chicago
Area Codes 763
Latitude 45,33° N
Longitude -93,56° 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 Elk River, MN

Postal Information

ZIP Code 55609
Type Po Box
Primary City Knife River
State MN
County Lake County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 218
Latitude 46,97° N
Longitude -91,78° 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 Knife River, MN

Postal Information

ZIP Code 55757
Type Standard
Primary City Kettle River
State MN
County Carlton County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 218, 320
Latitude 46,51° N
Longitude -92,95° 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 Kettle River, MN

Postal Information

ZIP Code 55784
Type Standard
Primary City Swan River
State MN
County Itasca County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 218
Latitude 47,08° N
Longitude -93,19° 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 Swan River, MN

Postal Information

ZIP Code 55795
Type Standard
Primary City Willow River
State MN
County Pine County
Acceptable Cities Rutledge
Unacceptable Norman
Time Zone America/Chicago
Area Codes 218, 320
Latitude 46,32° N
Longitude -92,83° 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 Willow River, MN

Postal Information

ZIP Code 56474
Type Standard
Primary City Pine River
State MN
County Cass County
Acceptable Cities Jenkins
Unacceptable Barclay, Blind Lake, Chickamaw Beach, Ponto Lake, Swanburg, Walden, Wilson, Woodrow
Time Zone America/Chicago
Area Codes 218
Latitude 46,72° N
Longitude -94,39° 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 Pine River, MN

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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.