Every government type has a little bit of other. The Census does not provide much detail about this category. It does include interest payments on debt. Every government type has this, because every government type sometimes sells bonds to finance the construction of buildings and other infrastructure. We can also use the data in the table to characterize each local government type.
Counties are general purpose governments, charged with providing a wide variety of services.
The biggest expense is hospitals. Cities and Towns. Municipalities also are general purpose governments. The biggest single expenditure is on sewers, but other functions cost almost as much. Important functions are police and fire protection, hospitals, highways and airports.