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U.S. ZIP +4 Database Technical Specifications

ZIP +4 Database (9 digit Zip Codes)


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ZIP+4 Database Documentation

ZIP+4 STANDARD Database Fields

FieldDescription
ZipCode00000-99999 Five digit numeric ZIP Code of the area.
UpdateKeyA unique key number identifying this record for updates.
ActionA or D, meaning add or delete this record.
RecordTypeA flag indicating which type of record this is. Ex: Firm, General Delivery, High Rise, PO Box, Rural Route, or Street.
CarrierRouteIDCarrier identification code or number for a given delivery route or PO box presentation.
StPreDirAbbrThe directional abbreviation that comes before an address: Ex: The N meaning North in "N 123 MAIN ST"
StNameThe official name of the street as assigned by a local governing authority for this record.
StSuffixAbbrCode that is the standard USPS abbreviation for the trailing designator in a street address.
StPostDirAbbrA geographic direction that follows the street name. Ex: The N meaning North in "123 MAIN ST N"
AddressPrimaryLowNumberThe low number in a range of numeric or alphanumeric components to an address preceding the street name.
AddressPrimaryHighNumberThe high number in a range of numeric or alphanumeric components to an address preceding the street name.
AddressPrimaryOddEvenCode that identifies the side or sides of a street for which a given address range is applicable.
BuildingFirmNameThe name of a company, building, apartment complex, shopping center, or other distinguishing secondary address information.
AddressSecondaryAbbrOnly Applicable to Record Types F and H.
AddressSecondaryLowNumberThe low-end secondary address component in a range of secondary addresses.
AddressSecondaryHighNumberThe high-end secondary address component in a range of secondary addresses.
AddressSecondaryOddEvenCode that identifies the side or sides of a street for which a given address range is applicable.
Plus4LowZIP Add-On Low Number in the range. Also known as the +4.
Plus4HighZIP Add-On High Number in the range. Also known as the +4.
BaseAlternateCodeCode that specifies whether a record is a base (preferred) or alternate record.
LACSStatusL = LACS Converted, Blank = Not Applicable
GovernmentBuildingThis indicates what type of Government building this is if applicable.
FinanceNumberA code assigned to Postal Service facilities (primarily post offices) to collect cost and statistical data and compile revenue and expense data.
StateA 2-character abbreviation for the name of a state, U.S. territory, or armed forces ZIP Code designation.
CountyFIPSThe 3-digit (FIPS) code assigned to counties in sequence within each state.
CongressionalDistrictThe current Congressional District this ZIP+4 record is assigned to.
MunicipalitykeyReserved for future use.
UrbanizationKeyAn index to the ZIP Code Database CityStateKey file that provides the urbanization name for this delivery range.
PreferredLastLineKeyMatch this field to our ZIP Code Database CityStateKey for City name, City alias, Area Code, TimeZone, and more.
ToLatitudeThe north/south measurement indicating the beginning for this record.
FromLatitudeThe north/south measurement indicating the beginning for this record.
ToLongitudeThe east/west measurement indicating the beginning for this record.
FromLongitudeThe east/west measurement indicating the beginning for this record.
CensusTractSmall, 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.
CensusBlockBlocks 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.
TLIDTiger Line Identification (TLID) is a universal number associated with Census Bureau products.

Note: Approximately 40-50% of records in the STANDARD Database do not contain Latitude/Longitude data; This is partly due to the fact that many are "point" ZIP Codes which have no geographical boundaries. Examples include: P.O. Box Only, Military, Single Business, and Government ZIP Codes. Any remaining missing Lat/Lon data is a function of the Tiger data always trying to play "catch up" with the U.S. Postal Service changes. For more complete coverage, please see the DELUXE Database.

 

ZIP+4 DELUXE Database Fields

FieldDescription
ZipCode00000-99999 Five digit numeric ZIP Code of the area.
UpdateKeyA unique key number identifying this record for updates.
ActionA or D, meaning add or delete this record.
RecordTypeA flag indicating which type of record this is. Ex: Firm, General Delivery, High Rise, PO Box, Rural Route, or Street.
CarrierRouteIDCarrier identification code or number for a given delivery route or PO box presentation.
StPreDirAbbrThe directional abbreviation that comes before an address: Ex: The N meaning North in "N 123 MAIN ST"
StNameThe official name of the street as assigned by a local governing authority for this record.
StSuffixAbbrCode that is the standard USPS abbreviation for the trailing designator in a street address.
StPostDirAbbrA geographic direction that follows the street name. Ex: The N meaning North in "123 MAIN ST N"
AddressPrimaryLowNumberThe low number in a range of numeric or alphanumeric components to an address preceding the street name.
AddressPrimaryHighNumberThe high number in a range of numeric or alphanumeric components to an address preceding the street name.
AddressPrimaryOddEvenCode that identifies the side or sides of a street for which a given address range is applicable.
BuildingFirmNameThe name of a company, building, apartment complex, shopping center, or other distinguishing secondary address information.
AddressSecondaryAbbrOnly Applicable to Record Types F and H.
AddressSecondaryLowNumberThe low-end secondary address component in a range of secondary addresses.
AddressSecondaryHighNumberThe high-end secondary address component in a range of secondary addresses.
AddressSecondaryOddEvenCode that identifies the side or sides of a street for which a given address range is applicable.
Plus4LowZIP Add-On Low Number in the range. Also known as the +4.
Plus4HighZIP Add-On High Number in the range. Also known as the +4.
BaseAlternateCodeCode that specifies whether a record is a base (preferred) or alternate record.
LACSStatusL = LACS Converted, Blank = Not Applicable
GovernmentBuildingThis indicates what type of Government building this is if applicable.
FinanceNumberA code assigned to Postal Service facilities (primarily post offices) to collect cost and statistical data and compile revenue and expense data.
StateA 2-character abbreviation for the name of a state, U.S. territory, or armed forces ZIP Code designation.
CountyFIPSThe 3-digit (FIPS) code assigned to counties in sequence within each state.
CongressionalDistrictThe current Congressional District this ZIP+4 record is assigned to.
MunicipalitykeyReserved for future use.
UrbanizationKeyAn index to the USPS City State file that provides the urbanization name for this delivery range.
PreferredLastLineKeyMatch this field to our ZIP Code Database for City name, City alias, Area Code, TimeZone, and more.
ToLatitudeThe north/south measurement indicating the end for this record.
FromLatitudeThe north/south measurement indicating the beginning for this record.
ToLongitudeThe east/west measurement indicating the end for this record.
FromLongitudeThe east/west measurement indicating the beginning for this record.
CensusTractSmall, 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.
CensusBlockBlocks 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.
TLIDTiger Line Identification (TLID) is a universal number associated with Census Bureau products.
LatLonMultiMatchCode that specifies if a ZIP+4 has more than 1 Latitude/Longitude Match. Y = Yes, Blank = No
CenLatLatitude of the ZIP+4 Centroid
CenLonLongitude of the ZIP+4 Centroid
BlockGroupCensus block group code (state, county, tract and block group codes)

Note: The Latitude/Longitude coverage is much more complete and accurate than our Standard ZIP+4 Database

 

5 Digit Standard ZIP Code Database Fields

[This database is included with the ZIP+4 Standard Database] For City and other information on each record, a copy of the 5 digit Standard ZIP Code database is included with your purchase:

FieldDescription
Zip Code5 digit zip code as designated by the United States Postal Service.
CityCity name as designated by the United States Postal Service.
StateA 2-character abbreviation for the name of a state, U.S. territory, or armed forces ZIP Code designation.
CountyCounty or parish name where the ZIP Code resides.
Area CodeTelephone area code(s) of the particular postal zone (ZIP Code).
City TypeDescribes the type of postal station in the "City Alias" field.
City Alias Abbr.Abbreviation of city alias where applicable.
City Alias NameThe alias name for the ZIP Code. This may be a city name, postal entity, community or a municipality name.
LatitudeThe geographic coordinate of a point measured in degrees north or south of the equator.
LongitudeThe geographic coordinate of a point measured in degrees east or west of the Greenwich (prime) meridian.
Time ZoneTime zone designation within the U.S. - the numbers 4-11 are assigned to the time zones.
ElevationThe county's average elevation.
County FIPSThe 3-digit (FIPS) code assigned to counties in sequence within each state.
Daylight SavingsFlag indicating whether a zip code is on daylight savings.
PreferredLastLineKeyMatches this record to our other products for designated city name, city type, area code, time zone, and more.

 

5 Digit Deluxe ZIP Code Database Fields

[This database is included with the ZIP+4 Deluxe Database] For City and other information on each record, a copy of the 5 digit Deluxe ZIP Code database is included with your purchase:

FieldDescription
ZipCode00000-99999 Five digit numeric ZIP Code of the area.
State2 letter state name abbreviation.
StateFullNameThe full US State Name.
CityName of the city as designated by the USPS.
CityAliasNameAlias name of the city if it exists.
CountyName of County or Parish this ZIP Code resides in.
AreaCodeThe telephone area codes available in this ZIP Code.
LatitudeGeographic coordinate as a point measured in degrees north or south of the equator.
LongitudeGeographic coordinate as a point measured in degrees east or west of the Greenwich Meridian.
ElevationThe average elevation of the county.
CityTypeIndicates the type of locale such as Post Office, Stations, or Branch.
CityAliasAbbreviation13 Character abbreviation for the city alias name.
CountyFIPSFIPS code for the County this ZIP Code resides in.
StateFIPSFIPS code for the State this ZIP Code resides in.
TimeZoneHours past Greenwich Time Zone this ZIP Code belongs to.
DayLightSavingFlag indicating whether this ZIP Code observes daylight savings.
ClassificationCodeThe classification type of this ZIP Code.
MultiCountyFlag indicating whether this ZIP Code crosses county lines.
CityAliasCodeCode indication the type of the city alias name for this record. Record can be Abbreviations, Universities, Government, and more.
PrimaryRecordCharacter 'P' denoting if this row is a Primary Record or not. Absence of character denotes a non-primary record.
HouseholdsPerZipcodeThe estimated number of households of the ZIP Code based on 2010 Census data.
PersonsPerHouseholdThe estimated average number of persons per household of the ZIP Code based on 2010 Census data.
AverageHouseValueThe average house value in County based on 2010 Census data.
IncomePerHouseholdThe average household per ZIP Code based on 2010 Census data.
PopulationThe population of the ZIP Code based on 2010 Census data.
WhitePopulationThe estimated White/Caucasian Population of the ZIP Code based on 2010 Census data.
BlackPopulationThe estimated Black/African American Population of the ZIP Code based on 2010 Census data.
HispanicPopulationThe estimated Hispanic Population of the ZIP Code based on 2010 Census data.
AsianPopulationThe estimated Asian Population of the ZIP Code based on 2010 Census data.
HawaiianPopulationThe estimated Hawaiian or Pacific Islander Population of the ZIP Code based on 2010 Census data.
IndianPopulationThe estimated American Indian and Alaska Native Population of the ZIP Code based on 2010 Census data.
OtherPopulationThe estimated Population of all other races for the ZIP Code based on 2010 Census data.
MalePopulationThe estimated Male Population of the ZIP Code based on 2010 Census data.
FemalePopulationThe estimated Female Population of the ZIP Code based on 2010 Census data.
MSAMetropolitan Statistical Area number assigned by Census 2010.
MSA_NamePrimary Metropolitan Statistical Area name or Title.
PMSAPrimary Metropolitan Statistical Area Number.
PMSA_NamePrimary Metropolitan Statistical Area name or Title.
CSACore Statistical Area. This area is a group of MSA's combined into a population core area.
CBSACore Based Statistical Area Number.
CBSA_DIVCore Based Statistical Area Division.
CBSA_TypeCore Based Statistical Area Type (Metro or Micro).
CBSA_NameCore Based Statistical Area Name or Title.
Region4 geographically grouped areas consisting of several States
Division9 geographically grouped areas consisting of several States
MailingNameYes or No (Y/N) flag indicating whether or not the USPS accepts this City Alias Name for mailing purposes.
PreferredLastLineKeyLinks this record with other products ZIP-Codes.com offers.
CityStateKeyLinks this record with other products ZIP-Codes.com offers such as the ZIP+4.
CityAliasCodeCode indication the type of the city alias name for this record. Record can be Abbreviations, Universities, Government, and more.
CityMixedCaseThe city name in mixed case (i.e. Not in all uppercase letters).
CityAliasMixedCaseThe city alias name in mixed case (i.e. Not in all uppercase letters).
StateANSIANSI code for the State this ZIP Code resides in.
CountyANSIANSI code for the County/Parish this ZIP Code resides in..
FacilityCodeThe type of locale identified in the city/state name.
CityDeliveryIndicatorSpecifies whether or not a post office has city-delivery carrier routes.
CarrierRouteRateSortationIdentifies where automation Carrier Route rates are available.
FinanceNumberA code assigned to Postal Service facilities.
UniqueZIPNameField that specifies whether the City State Record contains the organization name for a unique ZIP Code.

Portions of data provided by and United States Postal Service 2021. Zip-Codes.com is a non-exclusive licensee of the United States Postal Service.