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ALLM GeoData offers a wide range of geographic and address-related databases and products, providing quality geodata, geocoding and addressing products and services.

This page details some of the very specific data that we can provide.

Please contact us or complete our Enquiry form for more information.

Product list
Countries
Points of interest
Streets
Postcode patterns
Telephone number patterns
Personal names database
Supporting reference files

The Global Gazetteer: Countries

Containing approximately 290 sovereign states and other geopolitical entities, geocoded and enriched with various code numbers, telephone information, time zone data, currency, population, area, capital(s), and other data. The information held includes:

Name information	Short English name Full English version of name Alternative names in various languages
Locational information	Continent code (V) * "World Factbook" location (V) * Latitude (deg.min), Latitude seconds, Latitude orientation (N/S) Longitude (deg.min), Longitude seconds, Longitude orientation (E/W) Decimal latitude, Decimal longitude Time zone canonical name (V) *
Other information	ISO 3-letter country code, ISO 3-numeric country code, UN ('oval') code Postal service country prefix, FIPS-10 country code Postcode in use (Y/N), Postcode pattern(s) International telephone dialling code, Dial-out code for international calls from the country, Internal long-distance dialling code, Number of digits in the telephone number, in the area code and the subscriber number, Telephone patterns, International telex dialling code Population, Population date, Population source Currency description, ISO currency code (numeric), ISO currency code (alpha) Area, Area units, Daylight saving time (minutes), Notes, Information on the administrative structure of the country

* The V indicator signifies that the field is Validated, either from a fixed list of codes (V) or from another file (eg V-COUNTRIES).

The Global Gazetteer: Points of interest

Some 400,000 other points of interest, including railway stations, farms, mosques, resorts, etc, geocoded and linked to their places. The data fields are primarily the same as for Towns and Airports.

The Global Gazetteer: Streets

Street level postcode and addressing data for many countries. This data is linked through to The Global Gazetteer. We have developed a consistent data structure to handle street-level, PO Box and Large User data from all countries.

Postcode patterns

The pattern of alphanumeric and other postcode characters for each country, eg USA: nnnnn or nnnnn-nnnn. There has been a major expansion of postcode data and there are now over 1.65 million places with postcodes on file.

More postcodes are being incorporated into the database, as well as following through the changes to codes in El Salvador, Georgia and the Ukraine. The latter has been especially interesting, since much of the data is currently only available in the Russian transliteration (eg using 'g' instead of the Ukrainian 'h'), so it has required a double conversion to ensure that the old name version is retained as a variant.

Telephone number patterns

Official and other commonly used patterns for telephone numbers
(eg USA: (nnn) nnn nnnn, nnn/nnn nnnn, and others where appropriate).

Height

Virtually all records now have heights included. There are either actual heights as supplied by official agencies or major reference books, OR heights derived from the DTOPO30 files. In order to distinguish between the two types, they are kept in separate fields.

Personal names

GRC Database Information and ALLM GeoData are jointly working on a comprehensive given names database. Currently, it contains some 700,000 given (“first”) names, together with around 37,000 family names (“surnames”). Information included in this file is contained in the following fields:

Personal Name
Broad origin group of the name (eg Japanese, Arabic, Italian)
Official Country. An entry (using the ISO 3-letter code) is made here if the source for the name is an official instance (eg the Electoral Roll, Census, Birth Registration)
Gender (Male, Female, Unknown)
Unofficial country sources (based on the analysis of real-world data sets)
The version of the name with accented characters in Unicode codes (eg “Fran<00E7>ois”)
The type of name (Given, Surname, Cognomen, etc)
A count of the number of occurrences of the name in the United Kingdom Electoral Roll
Other counts, especially when a name is used by both male and female will be included

This table has been built through intense analysis of both real-World data sets and other sources of given- and family name information. These tables are being continually updated and improved.

Supporting reference files

A range of reference files to support the above, including Unicode meanings, standardised names and codes for administrative capitals, and other place types, reasons why place names may be preferred/non-preferred etc.

Unicode	Contains information on standard and locally defined diacritic character codes as used in the Unicode name field.
Fields	Unicode code Structured natural language meaning of code (eg eacuteuc) Description of character (eg ‘u with 2 dots over’) Countries using character (V- COUNTRIES) * Global Gazetteer transliteration of character Other transliterations, Notes
Continents	Contains codes for standard continents and slightly finer "World Factbook" locational descriptions. Fields: Code, Meaning, Conventional sort order
Administrative area Type codes	A general reference file containing standard codes for the types of administrative areas, place types, points of interest codes, etc. Fields: Code, Meaning (eg Gemeinde, County Town), Notes, Country in which used, Category of code Translation of the word in various languages
Preferred/non-preferred Name codes	Standardised codes as to why a particular name of a place is either the preferred name or is a non-referred name Fields: Code, Meaning (eg English conventional version of name, Minority language version)
Time Zones	The reference file of time zone canonical names Fields: GMT plus/minus, GMT offset, daylight savings time, formal rules for determining the change to and from DST.

Updated: 14 September 2003