question about counties - ??????

here is a question about counties

what parts of the USA are not within a county?

I am not sure if there is a legal or administrative or bureaucratic or
societal question - but anyhow

1. alaska has some areas that are outside of boroughs iirc - but they
probably get mail delivery and are protected by the us military - and
pay federal taxes - and register for selective service etc - but they
must show up on someones land ownership records

2. military bases might not be considered to be in counties - they
probably dont have to follow county rules - but they probably do show
up under county land ownership records - someone holds the elections
on the military bases - someone delivers there mail - they probably
dont pay any county taxes or fees - do US civilian laws apply on
military bases?

3. iirc yellwostone national park and yosemite national park and maybe
death valley national park are considered to be exclusive
jurisdictions - ie the NPS provides all police and fire and other
local governmental services - do state and county laws apply there? -
they must - whose land ownership record system do they appear on? -
their own?

4. how about indian reservations - they sit on many counties but I
suspect that some are exclusive jurisdictions - having their own laws
and law enforcement systems - do they have deeds to lands or is it all
communal / trust land - is there any such thing as a Indian Assesors
Department? - iirc have seen private land listed on indian
reservations like at Colville Wash - maybe some private parcels were
listed at the ? Ferry ? County Assesor office

5. district of columbia - ??? - have own local laws iirc - not sure
what local taxes they pay - I cant imagine that any Maryland or
Virginia laws apply to them - unless tere are some Metro planning laws
that apply to DC

6. puerto rico? guam? marshall islands?

7. probably all males in all areas have to register for selective
service / the military draft

8. Virginia cities are independent of counties - even the smallest of
them apparently - so I guess that means that they dont pay taxes to
the county and dont follow county rules

9. Angle Inlet Minnesota might be part of a Canadian county - ???

10. embassys are considered to be foreign territory iirc - but they
must have to meet local fire safety laws at the least - maybe not

11. NASA sites - wallops island - white sands - cape canaveral - they
must be exclusive lands - what county laws do they follow? DOE also -
Hanford - Savannah River - Los Alamos - etc - Los Alamos has a joint
FD with Los Alamos County iirc - I forget who pays for what

12. what county is the United Nations Building in? any? New York City
County? do they pay property taxes? do they follow the NYC fire code?
who owns the land?