Fixed width data is probably the most annoying data to import because you need some mechanism to break the columns at the column boundaries. A lot of people bring this kind of data into a tool such as OpenOffice, Excel or MS Access, massage it into a delimeted format and then pull it in with PostgreSQL copy command or some other means. There is another way and one that doesn’t require anything else aside from what gets packaged with PostgreSQL. We will demonstrate this way.

Mas.

http://www.postgresonline.com/journal/index.php?/archives/157-Import-fixed-width-data-into-PostgreSQL-with-just-PSQL.html