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

[formulanone]

Florida: Union County - population 15,535.

It's also home to many institutionalized individuals from the Department of Corrections, which skews the population of the county.

There's only two other counties in Florida without Interstates nor US Routes; Calhoun County at 14,625 and Liberty County with 8,365 residents.

[J3ebrules]

All NJ counties are served by an Interstate or US highway. Cumberland county comes SUUUUPER close, but is just grazed by US 40 at its north end.

[interstate73]

All NJ counties are served by an Interstate or US highway. Cumberland county comes SUUUUPER close, but is just grazed by US 40 at its north end.

Looking at google maps on my end it looks like US40 comes about half a mile short of the county line (going through Malaga in Gloucester) and therefore Cumberland County would meet the criteria... Is there somewhere else I'm missing?

[J3ebrules]

All NJ counties are served by an Interstate or US highway. Cumberland county comes SUUUUPER close, but is just grazed by US 40 at its north end.

Looking at google maps on my end it looks like US40 comes about half a mile short of the county line (going through Malaga in Gloucester) and therefore Cumberland County would meet the criteria... Is there somewhere else I'm missing?

I stand corrected! It does indeed miss by a half mile. So that means Cumberland County, NJ, estimated population 150,972, does meet the criteria of having no US or Interstate routes!

[roadfro]

States with no counties either serviced by a US Route or an Interstate:
New Hampshire, Nevada, Delaware, Connecticut

I was about to correct this about Nevada until I realized the intended meaning. "States where every county is serviced by a US Route or Interstate" would be a much easier phrase to parse.

[Hwy 61 Revisited]

Why not start a thread about the largest counties without a freeway in general?

[CoreySamson]

States with no counties either serviced by a US Route or an Interstate:
New Hampshire, Nevada, Delaware, Connecticut

I was about to correct this about Nevada until I realized the intended meaning. "States where every county is serviced by a US Route or Interstate" would be a much easier phrase to parse.

Now changed for clarity.

Why not start a thread about the largest counties without a freeway in general?

Perhaps. I think I'll change the name of this thread to something a bit more specific so we can do that; the current name is perfect for what you're proposing.

[sprjus4]

Perhaps. I think I'll change the name of this thread to something a bit more specific so we can do that; the current name is perfect for what you're proposing.

A new thread would be better; this thread has a purpose for including both.

[Bickendan]

Oregon has Wallowa County.

[stevashe]

Kind of an old thread, but since no one did Washington, I'll chip in. The largest county without a US or interstate highway is Kitsap County (pop. 271,473) mainly due to its peninsular nature.

[jmacswimmer]

Looks like no one covered Maryland yet either.

Only 3 of 24 counties/independent city qualify: St. Mary's, Calvert & Caroline.  St. Mary's is the largest of these 3 (pop. 108,987).

Carroll County almost wins, but I-70/US 40 just barely clips the southwestern corner for a mile and a half near Mt. Airy.  (US 140 also ran thru Carroll prior to being downgraded.)

[csw]

States with no counties either serviced by a US Route or an Interstate:
New Hampshire, Nevada, Delaware, Connecticut

Please add Arizona to this list.  Twelve of Arizona's fifteen counties are served by an Interstate highway.  The other three- Gila, Graham, and Greenlee, are all on US 70.

Add South Carolina too.

[zzcarp]

Colorado has 7 counties with no US or Interstate routes: Crowley, Custer, Gilpin, Hinsdale, Pitkin, Rio Blanco, and San Miguel.

Pitkin County, home of Aspen, is the winner with a population of 17,767.

[kphoger]

Unless I'm missing something for Kansas, 102 out of 105 counties have a US Route or Interstate.  Below are the remaining three:

Wichita County – pop. 2256 (8th-least populous county in Kansas)
Lane County – pop. 1704 (3rd-least populous county in Kansas)
Greeley County – pop. 1298 (least populous county in Kansas)

[Road Hog]

Arkansas has only 5 counties without a US highway: Yell, Perry, Cleburne, Stone and Izard. A sixth county, Logan, has a tiny loop of US 71 cutting across a corner, and the same is true for Newton County and US 65. Cleburne (25,230) is the most populous of all of them.

To my previous, Arkansas can have 98% US Highway coverage simply by extending US 266 along AR 22 and US 425 up AR 5. (Perry County will have to figure something else out.)

[dvferyance]

Here's all the states we have so far again.

Some expected states are near the top, but there are a few surprises, such as Rhode Island.

California: Tulare County pop. 442,000
Texas: Brazoria County pop. 370,200
Hawaii: Hawaii County pop. 185,000
Georgia: Fayette County pop. 107,500
New York: Tompkins County pop. 102,793
Rhode Island: Newport County pop. 82,888
Wisconsin: Wood County pop. 74,000
Michigan: Barry County pop. 60,000
Louisiana: Washington Parish pop. 46,690
Virginia: Independent City of Manassas pop. 41,641
Iowa: Marion County pop. 33,309
Illinois: Randolph County pop. 32,546
Missouri: Polk County pop. 31,137
Alabama: Geneva County pop. 26,421
Arkansas: Cleburne County pop. 25,230
Indiana: Fayette County pop. 24,277
South Dakota: Clay County pop. 13,864
Minnesota: Roseau County pop. 13,500
North Carolina: Pamlico County pop. 13,144
Utah: Wayne County pop. 2,690

States with no counties either serviced by a US Route or an Interstate:
New Hampshire, Nevada, Delaware, Connecticut

Wood County for Wisconsin is wrong. US 10 runs east-west south of Marshfield. I'd have to do some looking to see which county qualifies for Wisconsin, but it's not Wood County.

If your doing both then it's Green County population 36,000. Wood county is still the largest without an interstate at 74,000 on population. Sheboygan is the largest just without a US route at 116,000 in population though it once had US-141 before I-43 came in.

[thspfc]

I think Wisconsin's winner (loser?) is Door. #44 out of 72.

[dvferyance]

I think Wisconsin's winner (loser?) is Door. #44 out of 72.

Nope Door only has 27,000 in population it would be in 2nd place. Although Green County does have 8 state routes to Door County's just 2.

[bing101]

Oahu -- Population: 953,207 (2010)

Big Island and Maui would be two of Hawaii's other populated areas with no US Highway or interstate.

[CoreySamson]

Updated list:

California: Tulare County pop. 442,000
Texas: Brazoria County pop. 370,200
Washington: Kitsap County pop. 271,473
Hawaii: Hawaii County pop. 185,000
New Jersey: Cumberland County pop. 150,972
Maryland: St. Mary's County pop. 108,987
Georgia: Fayette County pop. 107,500
New York: Tompkins County pop. 102,793
Rhode Island: Newport County pop. 82,888
Michigan: Barry County pop. 60,000
Louisiana: Washington Parish pop. 46,690
Virginia: Independent City of Manassas pop. 41,641
Wisconsin: Green County pop. 36,000
Iowa: Marion County pop. 33,309
Illinois: Randolph County pop. 32,546
Missouri: Polk County pop. 31,137
Alabama: Geneva County pop. 26,421
Arkansas: Cleburne County pop. 25,230
Indiana: Fayette County pop. 24,277
Colorado: Pitkin County pop. 17,767
Florida: Union County pop. 15,535
South Dakota: Clay County pop. 13,864
Minnesota: Roseau County pop. 13,500
North Carolina: Pamlico County pop. 13,144
Utah: Wayne County pop. 2,690
Kansas: Wichita County pop. 2,256

States where every county is serviced by a US highway or an interstate:
New Hampshire, Nevada, Delaware, Connecticut, Arizona, South Carolina

Oahu -- Population: 953,207 (2010)

Big Island and Maui would be two of Hawaii's other populated areas with no US Highway or interstate.

I counted Big Island for Hawaii because Oahu has the H-Interstates.

[Ben114]

Dukes County, Massachusetts has a population of 16,535, with no numbered routes.

[jt4]

By my count, only 3 counties in Ohio qualify, with the largest being Carroll (26,914)

[KCRoadFan]

By my count, only 3 counties in Ohio qualify, with the largest being Carroll (26,914)

Why might that be the case with Ohio, I wonder? Maybe it's because of the state's abundance of US routes, including several that run diagonal (looking at you, US 33, 35, 42, 52, and 62).

[cenlaroads]

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

[froggie]

Updated list:

You may have missed my comment upthread about Vermont.  We only have one...Lamoille County.  24,475 if you need the pop.