Complete technical specifications including field data types and length can be found in our ZIP+4 Database Documentation
Our ZIP+4 ZIP Code Databse is approximately 800 Mb in size and contains over 40 million records with the following information for each record:
| Field
| Description
|
| ZipCode |
00000-99999 Five digit numeric ZIP Code of the area. |
| UniqueKey |
A unique key number identifying this record for updates. |
| ActionType |
A or D, meaning add or delete this record. |
| RecordType |
A flag indicating which type of record this is. Ex: Firm, General Delivery, High Rise, PO Box, Rural Route, or Street. |
| CarrierRouteID |
Carrier identification code or number for a given delivery route or PO box presentation. |
| StreetPreDirAbbr |
The directional abbreviation that comes before an address: Ex: The N meaning North in "N 123 MAIN ST" |
| StreetName |
The official name of the street as assigned by a local governing authority for this record. |
| StreetSuffixAbbr |
Code that is the standard USPS abbreviation for the trailing designator in a street address. |
| StreetPostDirAbbr |
A geographic direction that follows the street name. Ex: The N meaning North in "123 MAIN ST N" |
| AddressPrimaryLowNumber |
The low number in a range of numeric or alphanumeric components to an address preceding the street name. |
| AddressPrimaryHighNumber |
The high number in a range of numeric or alphanumeric components to an address preceding the street name. |
| AddressPrimaryOddEven |
Code that identifies the side or sides of a street for which a given address range is applicable. |
| BuildingFirmName |
The name of a company, building, apartment complex, shopping center, or other distinguishing secondary address information. |
| AddressSecondaryAbbr |
Only Applicable to Record Types F and H. |
| AddressSecondaryLowNumber |
The low-end secondary address component in a range of secondary addresses. |
| AddressSecondaryHighNumber |
The high-end secondary address component in a range of secondary addresses. |
| AddressSecondaryOddEven |
Code that identifies the side or sides of a street for which a given address range is applicable. |
| Plus4Low |
ZIP Add-On Low Number in the range. Also known as the +4. |
| Plus4High |
ZIP Add-On High Number in the range. Also known as the +4. |
| BaseAlternateCode |
Code that specifies whether a record is a base (preferred) or alternate record. |
| LACSStatus |
L = LACS Converted, Blank = Not Applicable |
| GovernmentBuilding |
This indicates what type of Government building this is if applicable. |
| FinanceNumber |
A code assigned to Postal Service facilities (primarily post offices) to collect cost and statistical data and compile revenue and expense data. |
| State |
A 2-character abbreviation for the name of a state, U.S. territory, or armed forces ZIP Code designation. |
| CountyFIPSCode |
The 3-digit (FIPS) code assigned to counties in sequence within each state. |
| CongressionalDistrict |
The 110th Congressional District this ZIP+4 record is assigned to. |
| UrbanizationCityStateKey |
An index to the USPS City State file that provides the urbanization name for this delivery range. |
| PreferredLastLineCityStateKey |
Match this field to our ZIP Code Database for City name, City alias, Area Code, TimeZone, and more. |
| FromLatitude |
The north/south measurement indicating the beginning for this record. |
| FromLongitude |
The east/west measurement indicating the beginning for this record. |
| ToLatitude |
The north/south measurement indicating the beginning for this record. |
| ToLongitude |
The east/west measurement indicating the beginning for this record. |
| CensusTract |
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. |
| CensusBlock |
Blocks are numbered uniquely within each census tract with a 3-character number that identifies the collection block used in the census and a character block suffix. This character block suffix is often blank. |
| TLID |
Tiger Line Identification (TLID) is a universal number associated with Census Bureau products. |
Note: Approximately 25% of +4 records do not contain Latitude/Longitude data
largely 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.
| Field
| Description
|
| Zip Code |
5 digit zip code as designated by the United States Postal Service. |
| City |
City name as designated by the United States Postal Service. |
| State |
A 2-character abbreviation for the name of a state, U.S. territory, or armed forces ZIP Code designation. |
| County |
County or parish name where the ZIP Code resides. |
| Area Code |
Telephone area code(s) of the particular postal zone (ZIP Code). |
| City Type |
Describes the type of postal station in the "City Alias" field. |
| City Alias Abbr. |
Abbreviation of city alias where applicable. |
| City Alias Name |
The alias name for the ZIP Code. This may be a city name, postal entity, community or a municipality name. |
| Latitude |
The geographic coordinate of a point measured in degrees north or south of the equator. |
| Longitude |
The geographic coordinate of a point measured in degrees east or west of the Greenwich (prime) meridian. |
| Time Zone |
Time zone designation within the U.S. - the numbers 4-11 are assigned to the time zones. |
| Elevation |
The county's average elevation. |
| County FIPS |
The 3-digit (FIPS) code assigned to counties in sequence within each state. |
| Daylight Savings |
Flag indicating whether a zip code is on daylight savings. |
| PreferredLastLineKey |
Matches this record to our other products for designated city name, city type, area code, time zone, and more. |
The Zip+4 ZIP Code Database is licensed in one of two ways, Standard or Redistributable. The Standard License allows you to use the database within one organization while the Redistributable allows you to distribute the data within an application without paying royalties. You can read more on each license by clicking the links below.
Portions of data provided by and © United States Postal Service 2007. Zip-Codes.com is a non-exclusive licensee of the United States Postal Service.
