This is the 12633rd most frequent Turkish word.
ilçeden
"From the district"
Here, 'ilçeden' refers to the origin place (district) from which the letter was dispatched.
Yeni gelen mektup ilçeden gönderilmiş.
The new letter was sent from the district.
In this sentence, 'ilçeden' signifies the starting point (district) of the friends' journey towards the destination.
Arkadaşlarım ilçeden gelmek üzere.
My friends are about to arrive from the district.
The word 'ilçeden' indicates the origin or source location (district) from which the items were bought.