Each of the 94 federal judicial districts handles bankruptcy matters, and in almost all districts, bankruptcy cases are filed in the bankruptcy court.
But if you were trying to figure out which court had jurisdiction over which county in states that have more than one court, such as New York, which has four, you won't find the info in the bankruptcy section, only an annoyingly overbroad map. Instead, look in the general federal district court section where you'll find this link for all counties in a district.
Eastern: KINGS, NASSAU, QUEENS, RICHMOND, SUFFOLK COUNTIES, NEW YORK
Southern: BRONX, DUTCHESS, NEW YORK, ORANGE, PUTNAM, ROCKLAND, SULLIVAN,
The Western contains the western counties, the Northern the eastern counties north of the Southern.