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.

42,735 verified records
All states and U.S. territories
Maps and coordinates
City lookup

ZIP Code Details for River

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

Postal Information

ZIP Code 10518
Type Standard
Primary City Cross River
State NY
County Westchester County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 914
Latitude 41,26° N
Longitude -73,59° 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 Cross River, NY

Postal Information

ZIP Code 10965
Type Standard
Primary City Pearl River
State NY
County Rockland County
Acceptable Cities -
Unacceptable Chestnut Ridge
Time Zone America/New_York
Area Codes 201, 551, 845
Latitude 41,06° N
Longitude -74° 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 Pearl River, NY

Postal Information

ZIP Code 11739
Type Po Box
Primary City Great River
State NY
County Suffolk County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 631, 934
Latitude 40,73° N
Longitude -73,16° 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 Great River, NY

Postal Information

ZIP Code 11792
Type Standard
Primary City Wading River
State NY
County Suffolk County
Acceptable Cities -
Unacceptable Wildwood, Willwood
Time Zone America/New_York
Area Codes 631, 934
Latitude 40,94° N
Longitude -72,81° 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 Wading River, NY

Postal Information

ZIP Code 11901
Type Standard
Primary City Riverhead
State NY
County Suffolk County
Acceptable Cities Flanders
Unacceptable Northampton
Time Zone America/New_York
Area Codes 631, 934
Latitude 40,94° N
Longitude -72,67° 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 Riverhead, NY

Postal Information

ZIP Code 12856
Type Po Box
Primary City North River
State NY
County Warren County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 518, 838
Latitude 43,67° N
Longitude -74,14° 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 North River, NY

Postal Information

ZIP Code 13612
Type Standard
Primary City Black River
State NY
County Jefferson County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 315, 680
Latitude 44° N
Longitude -75,79° 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 Black River, NY

Postal Information

ZIP Code 13627
Type Po Box
Primary City Deer River
State NY
County Lewis County
Acceptable Cities -
Unacceptable -
Time Zone America/New_York
Area Codes 315
Latitude 43,94° N
Longitude -75,59° 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 Deer River, NY

Postal Information

ZIP Code 17868
Type Po Box
Primary City Riverside
State PA
County Northumberland County
Acceptable Cities -
Unacceptable Wolverton
Time Zone America/New_York
Area Codes 272, 570
Latitude 40,96° N
Longitude -76,63° 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 Riverside, PA

Postal Information

ZIP Code 20670
Type Standard
Primary City Patuxent River
State MD
County St. Mary's County
Acceptable Cities Patuxent Rvr
Unacceptable Patuxent River Naval Air Sta
Time Zone America/New_York
Area Codes 227, 240, 301, 410, 443, 667
Latitude 38,28° N
Longitude -76,42° 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 Patuxent River, MD

Page 4 of 19
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.