Largest US Counties In Each State Without a US Highway or an Interstate

[bassoon1986]

Louisiana only has 5 parishes without an interstate or a US highway. Washington Parish, the toe of the boot, is the largest at 46,690. That's more people than I would have thought.
iPhone

I counted 6 parishes.  Am I overlooking a highway?

Washington
St. Bernard
Plaquemines
West Carroll
St. Helena
Cameron

Yes, it must be 6 then. I'm not sure which one i wasn't thinking of. Maybe St Bernard because I always tend to think that I-510 goes that far south.  It's just LA 47.


iPhone

[zachary_amaryllis]

define 'large' -- if you mean physically large, i believe jackson county, co has no us highways, and know for a fact no interstates.. and is fairly large physically, but might have like 3 people and a cow living in walden or something.

[Gnutella]

Fayette County is not the most populous county in Georgia without an Interstate. Forsyth County is. GA 400 is a controlled-access highway in most of Forsyth County, but it doesn't have a red and blue shield, so it's still not an Interstate.

Paulding County and Clarke County also have larger populations than Fayette County, but no Interstates.

[hotdogPi]

Fayette County is not the most populous county in Georgia without an Interstate. Forsyth County is. GA 400 is a controlled-access highway in most of Forsyth County, but it doesn't have a red and blue shield, so it's still not an Interstate.

Paulding County and Clarke County also have larger populations than Fayette County, but no Interstates.

US 19 disqualifies Forsyth County.

[JayhawkCO]

Just because I'm OCD and I can't have things unfinished, I think I got the rest of the list this morning.  My additions in bold:

State	County/Equivalent	Population
California	Tulare County	442,000
Texas	Brazoria County	370,200
Washington	Kitsap County	271,473
Hawaii	Hawaii County	185,000
New Jersey	Cumberland County	150,972
Maryland	St. Mary's County	108,987
Georgia	Fayette County	107,500
Oregon	Yamhill County	104,990
New York	Tompkins County	102,793
Rhode Island	Newport County	82,888
Michigan	Barry County	60,000
Louisiana	Washington Parish	46,690
Virginia	Independent City of Manassas	41,641
Wisconsin	Green County	36,000
Iowa	Marion County	33,309
Illinois	Randolph County	32,546
Alaska	Juneau City & Borough	31,986
Missouri	Polk County	31,137
Mississippi	Neshoba County	29,676
Kentucky	Perry County	27,597
Ohio	Carroll County	26,914
Alabama	Geneva County	26,421
Arkansas	Cleburne County	25,230
Vermont	Lamoille County	24,475
Indiana	Fayette County	24,277
Tennessee	Macon County	22,248
New Mexico	Los Alamos County	19,369
Colorado	Pitkin County	17,767
Maine	Picataquis County	16,785
Idaho	Gem County	16,719
Massachusetts	Dukes County	16,535
Florida	Union County	15,535
South Dakota	Clay County	13,864
Minnesota	Roseau County	13,500
North Carolina	Pamlico County	13,144
Oklahoma	Haskell County	12,769
Montana	Richland County	11,576
Nebraska	Wayne County	9,411
West Virginia	Tyler County	9,208
North Dakota	Mercer County	8,424
Pennsylvania	Cameron County	4,492
Utah	Wayne County	2,690
Kansas	Wichita County	2,256
Arizona	N/A	N/A
Connecticut	N/A	N/A
Delaware	N/A	N/A
Nevada	N/A	N/A
New Hampshire	N/A	N/A
South Carolina	N/A	N/A
Wyoming	N/A	N/A

Chris

[CoreySamson]

Just because I'm OCD and I can't have things unfinished, I think I got the rest of the list this morning.  My additions in bold:

State	County/Equivalent	Population
California	Tulare County	442,000
Texas	Brazoria County	370,200
Washington	Kitsap County	271,473
Hawaii	Hawaii County	185,000
New Jersey	Cumberland County	150,972
Maryland	St. Mary's County	108,987
Georgia	Fayette County	107,500
Oregon	Yamhill County	104,990
New York	Tompkins County	102,793
Rhode Island	Newport County	82,888
Michigan	Barry County	60,000
Louisiana	Washington Parish	46,690
Virginia	Independent City of Manassas	41,641
Wisconsin	Green County	36,000
Iowa	Marion County	33,309
Illinois	Randolph County	32,546
Alaska	Juneau City & Borough	31,986
Missouri	Polk County	31,137
Mississippi	Neshoba County	29,676
Kentucky	Perry County	27,597
Ohio	Carroll County	26,914
Alabama	Geneva County	26,421
Arkansas	Cleburne County	25,230
Vermont	Lamoille County	24,475
Indiana	Fayette County	24,277
Tennessee	Macon County	22,248
New Mexico	Los Alamos County	19,369
Colorado	Pitkin County	17,767
Maine	Picataquis County	16,785
Idaho	Gem County	16,719
Massachusetts	Dukes County	16,535
Florida	Union County	15,535
South Dakota	Clay County	13,864
Minnesota	Roseau County	13,500
North Carolina	Pamlico County	13,144
Oklahoma	Haskell County	12,769
Montana	Richland County	11,576
Nebraska	Wayne County	9,411
West Virginia	Tyler County	9,208
North Dakota	Mercer County	8,424
Pennsylvania	Cameron County	4,492
Utah	Wayne County	2,690
Kansas	Wichita County	2,256
Arizona	N/A	N/A
Connecticut	N/A	N/A
Delaware	N/A	N/A
Nevada	N/A	N/A
New Hampshire	N/A	N/A
South Carolina	N/A	N/A
Wyoming	N/A	N/A

Chris

Nice, thanks for finishing it up!

[bing101]

Maui and Big Island aka Hawaii county are the largest to not have US Highway or interstate within the state of Hawaii.

[US 89]

define 'large' -- if you mean physically large, i believe jackson county, co has no us highways, and know for a fact no interstates.. and is fairly large physically, but might have like 3 people and a cow living in walden or something.

US 40 clips the southwest corner between Rabbit Ears Pass and Muddy Pass - two of US 40's three continental divide crossings.