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U.S. ZIP+4 Database

What is a ZIP+4 Database?

Every U.S. street and address range, with its related 9 digit ZIP Code, put into row and column CSV format for easy use and manipulation. With over 50 unique fields of information and every 9 digit ZIP Code in the United States, it gives you an unlimited number of ways to analyze all the U.S. ZIP +4 information. Our ZIP plus 4 Database is a great tool for address verification, building websites, geotargeting, sales tax, and general analysis.

  • Use our ZIP plus 4 data for easy lookups and data filling
  • Target key locations and demographics using our data
  • Comes with every U.S. address range and its related geolocation
  • Has every street name and house number range in the U.S.
  • Comes with Complimentary 5 digit database for more powerful analysis
  • All purchases come with MONTHLY updates
  • IMMEDIATE download upon purchase & FTP Access Available

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All ZIP Code Databases come with:

  • Immediate Download
  • 1 Year with Monthly Updates
  • 100% Money Back Guarantee
  • Free Phone & Email Support
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  • Comma-Delimited (.CSV)
40 Data Fields
Supplemental 5 Digit ZIP File
Precise Lat/Lon & Block Group
40 Data Fields
Supplemental 5 Digit ZIP File
31 Data Fields
Supplemental 5 Digit ZIP File
ZipCode :: 00000-99999 Five digit numeric ZIP Code of the area. 1
Update Key :: A unique key number identifying this record for updates. 1
Action Type :: A or D, meaning add or delete this record. 1
Record Type :: A flag indicating which type of record this is. Ex: Firm, General Delivery, High Rise, PO Box, Rural Route, or Street. 1
Carrier Route ID :: Carrier identification code or number for a given delivery route or PO box presentation. 1
Street Pre Dir Abbr :: The directional abbreviation that comes before an address: Ex: The N meaning North in 'N 123 MAIN ST' 1
Street Name :: The official name of the street as assigned by a local governing authority for this record. 1
Street Suffix Abbr :: Code that is the standard USPS abbreviation for the trailing designator in a street address. 1
Street Post Dir Abbr :: A geographic direction that follows the street name. Ex: The N meaning North in '123 MAIN ST N' 1
Address Primary Low Number :: The low number in a range of numeric or alphanumeric components to an address preceding the street name. 1
Address Primary High Number :: The high number in a range of numeric or alphanumeric components to an address preceding the street name. 1
Address Primary OddEven :: Code that identifies the side or sides of a street for which a given address range is applicable. 1
Building Firm Name :: The name of a company, building, apartment complex, shopping center, or other distinguishing secondary address information. 1
Address Secondary Abbr :: Only Applicable to Record Types F and H. 1
Address Secondary Low Number :: The low-end secondary address component in a range of secondary addresses. 1
Address Secondary High Number :: The high-end secondary address component in a range of secondary addresses. 1
Address Secondary OddEven :: Code that identifies the side or sides of a street for which a given address range is applicable. 1
Plus4Low :: ZIP Add-On Low Number in the range. Also known as the +4. 1
Plus4High :: ZIP Add-On High Number in the range. Also known as the +4. 1
Base Alternate Code :: Code that specifies whether a record is a base (preferred) or alternate record. 1
LACS Status :: L = LACS Converted, Blank = Not Applicable 1
Government Building :: This indicates what type of Government building this is if applicable. 1
Finance Number :: A code assigned to Postal Service facilities (primarily post offices) to collect cost and statistical data and compile revenue and expense data. 1
State :: A 2-character abbreviation for the name of a state, U.S. territory, or armed forces ZIP Code designation. 1
CountyFIPS :: The 3-digit (FIPS) code assigned to counties in sequence within each state. 1
Congressional District :: The current Congressional District this ZIP+4 record is assigned to. 1
Urbanization City State Key :: An index to the USPS City State file that provides the urbanization name for this delivery range. 1
Preferred Last Line City State Key :: Match this field to our ZIP Code Database for City name, City alias, Area Code, TimeZone, and more. 1
To Latitude :: The north/south measurement indicating the beginning for this record.* 2
From Latitude :: The north/south measurement indicating the beginning for this record.* 2
To Longitude :: The east/west measurement indicating the beginning for this record.* 2
From Longitude :: The east/west measurement indicating the beginning for this record.* 2
Census Tract :: Small, locally delineated statistical areas within selected counties, generally having stable boundaries and, when first established by local communities, designed to have relatively homogeneous demographic characteristics.* 2
Census Block :: Blocks are numbered uniquely within each census tract with a 4-character number that identifies the collection block used in the census and a character block suffix. This character block suffix is often blank.* 2
TLID :: Tiger Line Identification (TLID) is a universal number associated with Census Bureau products.* 2
Street based Centroid Latitude :: The Premium database includes a street based centerpoint Latitude/Longitude for the ZIP+4. This will center point for the range, on the street itself.3
Street based Centroid Longitude :: The Premium database includes a street based centerpoint Latitude/Longitude for the ZIP+4. This will center point for the range, on the street itself3
Building based Centroid Latitude :: Deluxe database includes virtually all centerpoint Latitudes for every ZIP +4 in U.S. and is extremely comprehensive.4
Building based Centroid Longitude :: Deluxe database includes virtually all centerpoint Longitudes for every ZIP +4 in U.S. and is extremely comprehensive.4
Census Block Group :: Deluxe database includes virtually all Block Groups for the entire U.S.

A census block group is a cluster of census blocks represented by a code that includes state, county, and tract codes.

Census Block Group Code Structure:

Example

Block Group: 481130089006
Breakdown: 48 113 008900 6

  • 2 digit state
  • 3 digit county
  • 6 digit tract
  • 1 digit block group
  • 4
    DeluxeDeluxeStandard
    ZIP Code :: 5 digit ZIP Code as designated by the United States Postal Service.

    U.S. Territories are also included in our data. (Puerto Rico, Guam, American Samoa, Federated States of Micronesia, etc.)
    1
    City :: The official city name as designated by the United States Postal Service. 1
    State :: U.S. two digit state code and State Full Name in separate columns.

    Sort on this field to get all your data grouped by state.
    1
    County :: County or parish where the ZIP Code resides.

    As with any of our data fields, you can sort the data by this field and the result will be data grouped by county.
    1
    Area Code :: Telephone Area Code(s) of the particular postal zone (ZIP Code).

    Sorting by this field will give you all the data grouped by area code.
    3
    City Type :: Describes the type of postal station in the 'City Alias' field:

    CODE DESCRIPTION

    B    Branch
    C    Community Post Office (CPO)
    N    Non Postal Community Name
    P    Post Office
    S    Station
    U    Urbanization
    X    APO/FPO MIlitary
    Z    P.O. Box
    1
    City Alias Abbr. :: Abbreviation of city alias where applicable. 1
    City Alias Name :: The alias name for the ZIP Code. This may be a city name, town name, village name, postal entity, community or a municipality name.

    The city alias names are the reason why our database has approximately 78,000+ records. There are only about 43,000 U.S. ZIP Codes, but since we list each city alias within a ZIP Code, we end up with almost double the number of records.
    1
    Latitude :: The geographic coordinate of a point measured in degrees north or south of the equator. 3
    Longitude :: The geographic coordinate of a point measured in degrees east or west of the Greenwich (prime) meridian. 3
    Time Zone :: Time zone designation within the U.S. - the numbers 4-15 are assigned to the time zones.

    CODE    DESCRIPTION
    4     Atlantic (GMT -04:00)
    5     Eastern (GMT -05:00)
    6     Central (GMT -06:00)
    7     Mountain (GMT -07:00)
    8     Pacific (GMT -08:00)
    9     Alaska (GMT -09:00)
    10    Hawaii-Aleutian Islands (GMT -10:00)
    11    American Samoa (GMT -11:00)
    14    Guam (GMT +10:00)
    15    Palau (GMT +9:00)
    3
    Elevation :: The county's average elevation. 5
    State FIPS :: Federal Information Processing Standards code given to each state or US territory.

    This code simply identifies each U.S. state or territory by its unique 2 digit code.
    1
    County FIPS :: Federal Information Processing Standards code given to counties or parishes.

    This code simply identifies each U.S. county by its unique 3 digit code.
    1
    Daylight Savings :: Flag indicating whether the ZIP Code observes daylight savings. 3
    Preferred Last Line Key :: Links this record with other products ZIP-Codes.com offers such as the ZIP+4. 1
    Classification Code :: The classification type of this ZIP Code.

    CODE DESCRIPTION
    'Blank' = Non-Unique ZIP Code
    M = APO/FPO Military ZIP Code
    P = PO Box ZIP Code
    U = Unique ZIP Code (includes businesses and government buildings that have their own unique ZIP Code)
    1
    Multi County Flag :: Flag indicating whether this ZIP Code crosses county lines.

    IMPORTANT: This does not show which counties this ZIP Code covers, it is simply a flag that indicates whether the ZIP Code falls into more than one county. If you need the actual counties that a particular ZIP Code falls into, you need to purchase the Business version of our database.
    3
    City Alias Code :: Code indicating the type of the city alias name for this record. Record can be Abbreviations, Universities, Government, and more.

    A = Abbreviation
    B = Business
    G = Government
    M1 = Military Base
    M1P = Military Base - Primary
    M2 = Military Non-Base
    M2P = Military Non-Base - Primary
    U = University
    UP = University - Primary
    Blank = Regular Non Abbreviated ZIP Code
    3
    Primary Record :: This column indicates the 'primary' city name within a given ZIP Code, as designated by the U.S. Postal Service.

    If you want to get only the 'unique' U.S. ZIP Codes, sort the data by this field. Your results will be all (approx.) 43,000 unique ZIP Codes and all will be designated with a 'P'.
    3
    Mixed Case City :: The city name of the ZIP Code in proper case. The USPS designates cities in all uppercase (i.e. NEW YORK). The Mixed case fields turns this into proper upper and lower case letters (i.e. New York). 3
    Mixed Case City Alias :: The city alias name of the ZIP Code in proper case. The USPS designates cities in all uppercase (i.e. NEW YORK). The Mixed case fields turns this into proper upper and lower case letters (i.e. New York). 3
    State ANSI Code :: ANSI code for the State this ZIP Code resides in. ANSI is the system that is replacing the FIPS system. 6
    County ANSI Code :: The type of locale identified in the city/state name. ANSI is the system that is replacing the FIPS system. 6
    Facility Code :: The type of locale identified in the city/state name. 1
    Unique ZIP Name :: Field that specifies whether the City State Record contains the organization name for a unique ZIP Code. 1
    City Delivery Indicator :: Specifies whether or not a post office has city-delivery carrier routes. 1
    Carrier Route Sortation :: Identifies where automation Carrier Route rates are available. 1
    Finance Number :: A code assigned to Postal Service facilities. 1
    Population :: The population of the ZIP Code based on Census 2020.

    The population numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    Househlds / Zip :: Total estimated amount of households per ZIP Code based on Census 2020.

    The households per zip numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    White Population :: The estimate of White population per ZIP Code based on Census 2020.

    The white population numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    Black Population :: The estimate of Black population per ZIP Code based on Census 2020.

    The black population numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    Hispanic Pop. :: The estimate of Hispanic population per ZIP Code based on Census 2020.

    The Hispanic population numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    Asian Pop. :: The estimate of Asian population per ZIP Code based on Census 2020.

    The Asian population numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    Hawaiian Pop. :: The estimate of Hawaiian or Pacific Islander population per ZIP Code based on Census 2020.

    The Hawaiian or Pacific Islander population numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    Indian Pop. :: The estimate of American Indian and Alaska Native population per ZIP Code based on Census 2020.

    The American Indian and Alaska Native population numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    Other Pop. :: The estimate population for all other races per ZIP Code based on Census 2020.

    The other race population numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    Male Pop. :: The estimate of Male population per ZIP Code based on Census 2020.

    The Male population numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    Female Pop. :: The estimate of Female population per ZIP Code based on Census 2020.

    The Female population numbers are not projected to the future, they are actual Census 2020 numbers.
    7
    Persons / House :: Average number of individuals per household.

    The average number of individuals per household are not projected to the future, they are actual Census 2020 numbers.
    7
    Avg. House Value :: The Median average house value per ZIP Code based on Census American Community Survey.

    Sort by this field to get the top house values by ZIP Code.

    The Median average house value numbers are from the Census American Community Survey 2017-2021.
    8
    Income / House :: The Median average household income per ZIP Code based on Census American Community Survey.

    Sort by this field to get all the top household incomes by ZIP Code.

    The Median average household income numbers are from the Census American Community Survey 2017-2021.
    8
    MSA Code & Name :: Metropolitan Statistical Area. (no longer used by government - CBSA is the new standard)

    MSA's were replaced by CBSA's in the 90's. We keep the old MSA's in our database because some of our older customers have mapped their data by this information and it makes it easier for them if we leave the data in the database.
    8
    PMSA Code :: Primary Metropolitan Statistical Area.

    This is the area that the Census Bureau designates as the "primary" area within a given MSA.
    8
    CSA Code :: Core Statistical Area.

    This area is a group of MSA's combined into a population core area.
    8
    CBSA Code & Name :: Core Based Statistical Area (replaces old MSA's).

    A Core Based Statistical Area is the official term for a functional region based around an urban center of at least 10,000 people, based on standards published by the Office of Management and Budget (OMB) in 2000. These standards are used to replace the definitions of metropolitan areas that were defined in 1990.

    A CBSA is broken into two sub categories, Metro and Micro, and are detailed in the CBSA Type Field. These are defined by their population densities. To be considered a Micro area, population must be between 10,000 and 50,000. To be considered a Metro area, population must exceed 50,000.
    8
    CBSA Type :: Indication of whether a CBSA is Metro (over 50,000 population) or Micro (10,000 - 50,000 population). 8
    CBSA Division Code & Name :: Core Based Statistical Area Division name and number.

    A metropolitan statistical area containing an urbanized area of at least 2.5 million people can be subdivided into two or more 'metropolitan divisions', provided specified criteria are met. Metropolitan divisions are conceptually similar to the primary metropolitan statistical areas (PMSAs) defined under previous standards.

    These two fields field gives the sub-divided region name and number.
    8
    Region :: Census Division: A geographic area consisting of several States defined by the U.S. Department of Commerce, Bureau of the Census. The States are grouped into four regions and nine divisions. See also: Division 3
    Division :: Census Division: A geographic area consisting of several States defined by the U.S. Department of Commerce, Bureau of the Census. The States are grouped into four regions and nine divisions. See also: Region 3
    Mailing Name :: Yes or No (Y/N) flag indicating whether or not the USPS accepts this City Alias Name for mailing purposes. 1
     
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    * The Standard Lat/Lon & Census Tract/Block coverage is approximately 60% of available coordinates.
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    The last four digits alongside the Zip code refer to a specific block, range of addresses, or building within the ZIP code area. This facilitates the United States Postal Service in sorting and delivering mail with greater accuracy and efficiency. Take advantage of our vast ZIP+4 database to deal with the growing complexity and volume of mail. We ensure that your message is delivered to the correct location with maximum efficiency.

    ZIP 4 Database: The Resource For Creating Highly Effective Marketing Campaigns


    Nowadays more & more businesses and organizations want to gain more detailed insights into their customer base. They can use our ZIP+4 code database to enhance their marketing strategy & efforts. Analyzing our ZIP 4 database, enables business owners to better understand the real-time location of their customer base. They can use it to identify new areas for growth and optimize their marketing strategies. It helps increase security and reduce the risk of fraud or theft. Using our ZIP+4 database enables businesses can verify the identity of their customers easily and reduce the likelihood of fraudulent transactions. Fewer delivery issues mean happier customers and better reviews for businesses.

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    Our main goal is to provide you with the latest US ZIP+4 database that is both cost-effective and productive. We are proud to have the industry's best team, well-trained and experienced, to answer your questions. For immediate assistance, contact us via phone at (845) 227-1502 or email at info@zip-codes.com. Whether you're looking for reliable data or need help to Lookup ZIP+4 Codes, we are dedicated to offering you the support you need.

    References


    1. U.S. Postal Service [Last Updated: 8/1/2025], https://www.usps.com
    2. U.S. Census, https://www.census.gov
    3. ZIP-Codes.com Internal Data Creation [Last Updated: 8/1/2025], https://www.zip-codes.com
    4. Precisely [Updated Quarterly], https://www.precisely.com
    5. U.S. Geological Survey [Updated as needed], https://www.usgs.gov
    6. U.S. Census American National Standards Institute (ANSI) [Last Updated: 8/1/2025], https://www.census.gov
    7. U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov
    8. U.S. Census [Updated Yearly], https://www.census.gov
    Portions of data are provided by the United States Postal Service and are © 2025. Zip-Codes.com is a non-exclusive licensee of the United States Postal Service.