Getting from Pennsylvania to the rest of the country

[Konza]

In Maryland:
...
That's 14 of 24 jurisdictions: The 10 with no direct connections are Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent, Montgomery, Queen Anne's, St. Mary's and Talbot.

Counting state routes, Montgomery County connects with PA via MD/PA 97, which brings the total to 15 of 24.

Wait, what? I did Maryland for Illinois, and came up with connections to 17 of 24. That is totally wild that Illinois, halfway across the country, hits more Maryland counties with just 3 routes than PA, right next door, hits with 12 routes!

Thanks to US 50! Wow, that's crazy.

And what is even wilder is that the same is true for Missouri, Kansas, Colorado, and Utah.

[Crown Victoria]

In Maryland:
...
That's 14 of 24 jurisdictions: The 10 with no direct connections are Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent, Montgomery, Queen Anne's, St. Mary's and Talbot.

Counting state routes, Montgomery County connects with PA via MD/PA 97, which brings the total to 15 of 24.

Wait, what? I did Maryland for Illinois, and came up with connections to 17 of 24. That is totally wild that Illinois, halfway across the country, hits more Maryland counties with just 3 routes than PA, right next door, hits with 12 routes!

Thanks to US 50! Wow, that's crazy.

And what is even wilder is that the same is true for Missouri, Kansas, Colorado, and Utah.

If we also consider PA 841/MD 213, that adds on Kent and Queen Anne's, which with the aforementioned PA/MD 97 adding Montgomery, brings the count to 17/24 for PA.  That in no way diminishes the feat that Illinois pulls off, especially considering that's with one interstate and two US routes only!

[Crown Victoria]

For Ohio:

I-70 adds Preble, Montgomery, Clark, Madison, Franklin, Fairfield, Licking, Muskingum, Guernsey, Belmont (10)
I-76 adds Medina, Summit, Portage, Mahoning (4)
I-80 adds Williams, Fulton, Lucas, Wood, Ottawa, Sandusky, Erie, Lorain, Cuyahoga, Trumbull (10)
I-90 adds Lake, Ashtabula (2)
US 6 adds Henry and Geauga (2)
US 20 adds Huron (1)
US 22 adds Hamilton, Warren, Clinton, Fayette, Pickaway, Perry, Harrison, Jefferson (8)
US 30 adds Paulding, Van Wert, Putnam, Allen, Hancock, Wyandot, Crawford, Richland, Ashland, Wayne, Stark, Columbiana (12)
US 40 adds Miami (1)
US 62 adds Brown, Highland, Knox, Holmes (4)
US 224 adds Seneca (1)
US 322 and US 422 do not add any counties that aren't listed already.

Interstates and US Routes from PA reach 55 of 88 counties in Ohio. 

With state route OH 39/PA 68:  Tuscawaras and Carroll (2), bringing the total to 57/88.

[Konza]

I modified my Indiana map to reflect the routes that emanate from Pennsylvania.

There may be an error or omission or two, but it's clear that "The Keystone State" falls over 200 counties short of "The Crossroads of America".

[Crown Victoria]

I modified my Indiana map to reflect the routes that emanate from Pennsylvania.

There may be an error or omission or two, but it's clear that "The Keystone State" falls over 200 counties short of "The Crossroads of America".

Thanks for the map!  PA may have come up short but it was still worth a shot.  Probably the best of the East Coast states at least. 

[webny99]

If you're willing to count NY/PA 14, then you can add Schuyler, Yates, and Wayne Counties for NY.

[Konza]

If you're willing to count NY/PA 14, then you can add Schuyler, Yates, and Wayne Counties for NY.

You win, but only because it goes through Watkins Glen.

[Verlanka]

I modified my Indiana map to reflect the routes that emanate from Pennsylvania.

There may be an error or omission or two, but it's clear that "The Keystone State" falls over 200 counties short of "The Crossroads of America".

A few notes on the map:
- US 19 also goes through Manatee and Gilchrist in Florida.
- I-95 also goes through DC, but very briefly.

[mvak36]

I modified my Indiana map to reflect the routes that emanate from Pennsylvania.

There may be an error or omission or two, but it's clear that "The Keystone State" falls over 200 counties short of "The Crossroads of America".

That's a cool map. What site/software did you use for it?

[Konza]

Go to www.mob-rule.com.

If you're counting counties and mapping your travel, you'll have fun with it.