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 Rock

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

Postal Information

ZIP Code 47635
Type Standard
Primary City Rockport
State IN
County Spencer County
Acceptable Cities -
Unacceptable Eureka, Patronville, Reo
Time Zone America/Chicago
Area Codes 270, 364, 812, 930
Latitude 37,88° N
Longitude -87,05° 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 Rockport, IN

Postal Information

ZIP Code 47872
Type Standard
Primary City Rockville
State IN
County Parke County
Acceptable Cities Judson
Unacceptable Catlin, Coloma, Guion, Hollandsburg, Mansfield, Milligan, Nyesville
Time Zone America/Indiana/Indianapolis
Area Codes 765, 812, 930
Latitude 39,76° N
Longitude -87,23° 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 Rockville, IN

Postal Information

ZIP Code 48134
Type Standard
Primary City Flat Rock
State MI
County Wayne County
Acceptable Cities Brownstown, Brownstown Township, Brownstown Twp, Brownstwn Twp
Unacceptable -
Time Zone America/Detroit
Area Codes 734
Latitude 42,1° N
Longitude -83,27° 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 Flat Rock, MI

Postal Information

ZIP Code 48173
Type Standard
Primary City Rockwood
State MI
County Wayne County
Acceptable Cities Brownstown, Brownstown Township, Brownstwn Twp, Gibraltar
Unacceptable Brownstown Twp
Time Zone America/Detroit
Area Codes 734
Latitude 42,07° N
Longitude -83,24° 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 Rockwood, MI

Postal Information

ZIP Code 48179
Type Standard
Primary City South Rockwood
State MI
County Monroe County
Acceptable Cities S Rockwood
Unacceptable -
Time Zone America/Detroit
Area Codes 734
Latitude 42,06° N
Longitude -83,26° 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 South Rockwood, MI

Postal Information

ZIP Code 49341
Type Standard
Primary City Rockford
State MI
County Kent County
Acceptable Cities -
Unacceptable -
Time Zone America/Detroit
Area Codes 616
Latitude 43,12° N
Longitude -85,55° 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 Rockford, MI

Postal Information

ZIP Code 49351
Type Unique
Primary City Rockford
State MI
County Kent County
Acceptable Cities -
Unacceptable Wolverine World Wide
Time Zone America/Detroit
Area Codes 616
Latitude 43,12° N
Longitude -85,55° 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 Rockford, MI

Postal Information

ZIP Code 49880
Type Standard
Primary City Rock
State MI
County Delta County
Acceptable Cities -
Unacceptable -
Time Zone America/Detroit
Area Codes 906
Latitude 46,06° N
Longitude -87,16° 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 Rock, MI

Postal Information

ZIP Code 49960
Type Po Box
Primary City Rockland
State MI
County Ontonagon County
Acceptable Cities -
Unacceptable -
Time Zone America/Detroit
Area Codes 906
Latitude 46,73° N
Longitude -89,17° 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 Rockland, MI

Postal Information

ZIP Code 50467
Type Standard
Primary City Rock Falls
State IA
County Cerro Gordo County
Acceptable Cities -
Unacceptable -
Time Zone America/Chicago
Area Codes 641
Latitude 43,21° N
Longitude -93,09° 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 Rock Falls, 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.