MAF Outputs

The MAF address correction engine can input an incomplete or ambiguous address, match it to the MAF database, and generate the outputs listed below. MAF's documentation explains these outputs in more detail. Various tools included with MAF allow you to manipulate these outputs in a variety of ways (such as automatically updating every record in a file). You can also export raw data directly from the MAF database.

Address (final): the recommended, standardized form of the input address as used by MAF to try and find a match in the address database. If the input address is "SUITE A 123 MAIN STREET", then Address (final) would be "123 MAIN ST APT A".

Address (delimited): the same as Address (final), except vertical bars delimit the seven subfields that form the standardized address. If the input address is "SUITE A 123 MAIN STREET", then Address (delimited) would be "123||MAIN|ST||APT|A".

Address leftovers: any words from the original input address that were not used in Address (final). If the original address is "100 MAIN ST PAYABLES" then Address (final) would be "100 MAIN ST" and Address leftovers would be "PAYABLES".

Address line 2 (final): private mailbox information (such as "PMB 123") if the input address used a PMB designation and the input address occupied two lines.

Address type: a code indicating whether the address is commercial, a mail drop, a mixed-used building, or residential.

Barcode digits: the string of twelve digits corresponding to a delivery point barcode.

Barcode unchecked: the same as Barcode digits, but without the ending checksum digit.

Building: the building name on file in the MAF database for Address (final).

Certified: the single character "C" if a ZIP+4 code for the input address was located in the MAF database.

City (final): the corrected and standardized form of the input city.

City (preferred): the recommended city name to use for Address (final).

City state ZIP (final): City (final), State (final) and ZIP (final) combined in one field, separated by blanks.

City state ZIP (preferred): City (preferred), State (final) and ZIP (final) combined in one field, separated by blanks.

County code: the county number (IFIPS code) for Address (final).

County name: the name of the county Address (final) is located in.

Data date: eight digits in the form YYYYMMDD indicating the year, month and day of the MAF database.

Date certified: eight digits in the form YYYYMMDD indicating the year, month and day Address (final) was processed.

Default match: the character "Y" if a match was made to a default building record.

DPV CMRA: the character "Y" if the matched address is a Commercial Mail Receiving Agency (CMRA), otherwise known as a mail drop.

DPV confirm: a code indicating whether or not the address receives mail and whether or not any apartment number is valid.

Error code: a single whole number from 1 to 14, identifying the error group of the "most significant" error in the input address.

Error codes (combined): a list of all Error codes for the input address.

Error message: the text message corresponding to the first error number in Error numbers (detailed).

Error numbers (detailed): a list of all error numbers for the input address.

Errors (binary): a string containing only "0" or "1" characters, with each character corresponding to a possible error. "00000000000000101000000000100000000000100" indicates errors 9.2, 10.2, 11.9, and 14.2.

Extension for DPBC: the two-character numeric extension to ZIP (final) needed to form an intelligent barcode.

Fragment (apt): just the apartment number found in Address (final).

Fragment (house): just the house number found in Address (final).

Fragment (PMB number): any private unit number found in Address (final).

Fragment (PMB prefix): the string "PMB" if a PMB designation was used, or "#" if "PMB" wasn't used, when Address (final) contains a private unit number.

Fragment (postdir): just the postdirection found in Address (final).

Fragment (predir): just the predirection found in Address (final).

Fragment (street): just the street name found in Address (final).

Fragment (suffix): just the street suffix found in Address (final).

Fragment (unit): just the unit abbreviation found in Address (final).

Geo block: the Census Bureau block number for the address.

Geo ID: the Census Bureau number uniquely identifying the address information that was used to generate all the corresponding Geo... output fields.

Geo latitude: the latitude for the address.

Geo longitude: the longitude for the address.

Geo multiple: a warning code indicating the address matched multiple Census Bureau records.

Geo side: a code indicating on which sides of the street the address can be found.

Geo tract: the Census Bureau tract number for the address.

Geo warn: a warning code indicating the Census Bureau's standardization of the address was not an exact match to the MAF standardization of the same address.

Nothing: always empty. This output can be used to delete obsolete data.

PMB number: any private mailbox number found in Address (final) prefixed with "PMB".

PMB prefix: the string "PMB", if Address (final) contains a private mailbox number prefixed with "PMB".

Pointers: the state, city, street, and address record numbers where MAF ended the search for the input address. Useful for programmers extracting records from the database.

Private mailbox: the PMB prefix and PMB number, separated by a blank.

Read counts: a list of numbers indicating the number of times MAF had to retrieve records from the MAF database while processing the input address.

Read counts (disk): a list of numbers indicating the number of times MAF had to retrieve records from the MAF database while processing the input address, but the record was not in MAF's cache, so an actual disk read was necessary.

Search result: one or two fragments of data from the database indicating where MAF stopped searching when an error occurred.

Search time: the number of milliseconds MAF spent trying to find the input address.

State (final): the corrected and standardized form of the input state.

Uncertified: the character "U" if the address does not receive mail.

Unused address field: the input record field number of whichever address field MAF did not use to find a match in the database, if the input record has dual address fields.

Unused address text: whichever input address MAF did not use to find a match in the database, if the input record has dual address fields.

Version: the version number of the address correction engine.

ZIP (final): the corrected and standardized ZIP+4 form of the input ZIP Code.

ZIP (five-digit): the first five characters of ZIP (final).

ZIP (four-digit add-on): the seventh through tenth characters of ZIP (final).


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