[conservatism_IS_compassion]

"GENERAL INFORMATIONS: Region: Lombardy Province: Sondrio Surface: 53.05 kmq Altitude on the sea level: from 590m to 2840m Inhabitants: 1700 circa Quarters: Piazza, Prada, Roncale, S. Martino Patron: Saint Eusebio (1st August) Co-Patron: S. Antonio (17th January) Fairs: Saint Eusebio (1st August), Saint Antonio (17th January), Madonna of the belts (first Sunday of September) Day of market: Tuesday"

GENERAL INFORMATION:

Region: Lombardy
Province: Sondrio
Area: 53.05 kmq
Elevation: 1935 to 9320 ft.
Population: approximately 1700
Quarters: Piazza, Prada, Roncale, S. Martino
Patron Saint: Eusebio (August 1st)
Co-Patron: S. Antonio (January 17th)
Fairs:

January 17th: Saint Antonio
August 1st: Saint Eusebio
First Sunday in September: Madonna of the belts

Market day: Tuesday

The green text above is what you wrote; the black text is my translation and reformatting to make it clear to me (and, we can hope, other English-speakers who read it). But the red items are things I didn't understand. I'm not conversant with your unit of area (what you called "surface,") and I'm not sure what you mean by "Quarters" (unless these are the subdivisions of the town).

Does "kmq" stand for "kilometers squared"?

[conservatism_IS_compassion]

Assuming that the area of the town is 53.05 square kilometers, and assuming that I did the conversion correctly, the area of the town is about 20.5 square miles. Judging by my appreciation of the ratio of the kilometer to the mile, I think that's a reasonable number.