Which county has the most US routes?

[bassoon1986]

I think Texas only has Dallas county (5)- 67, 75, 77, 80, 175

Many other Texas counties have 4

[bassoon1986]

And Arkansas:

Jefferson (5): 63, 65, 79, 270, 425
Pulaski (5): 65, 67, 70, 165, 167
Crittenden (5): 61, 63, 64, 70, 79

[txstateends]

OK: Cimarron Co.-- US 56, 64, 287, 385, 412

TX:
(besides the already mentioned Dallas Co.)
Bowie Co. -- US 59, 67, 71, 82, 259

--there are many TX runners-up
Anderson Co. -- US 79, 84, 175, 287
Baylor Co. -- US 82, 183, 277, 283
Bexar Co. -- US 87, 90, 181, 281
Brown Co. -- US 67, 84, 183, 377
Cherokee Co. -- US 69, 79, 84, 175
Dallam Co. -- US 54, 87, 287, 385
El Paso Co. -- US 54, 62, 85, 180
Jefferson Co. -- US 69, 90, 96, 287
Lubbock Co. -- US 62, 82, 84, 87
McCulloch Co. -- US 87, 190, 283, 377
Pecos Co. -- US 67, 190, 285, 385
Rusk Co. -- US 59, 79, 84, 259
Terry Co. -- US 62, 82, 380, 385
Wichita Co. -- US 82, 277, 281, 287
Wilbarger Co. -- US 70, 183, 283, 287

If the routing of US 56-64-412 was just a few feet south or southeast, Dallam Co. would edge out all others in TX with 7 US routes.

[ElPanaChevere]

Looking at Google Maps, which has no county lines:

Which county has 19/29/41/78/278 in Atlanta? (23 might also enter the county, but it might not.)

For some distance, US 23 /GA 42 is Moreland Avenue, which straddles the Fulton/DeKalb County line. So yeah, technically, yes?

[oldparoadgeek]

Dauphin County in PA actually has 6;  11, 15, 22, 322, 422, and 209.Near Clarks Ferry  the county actually is West of the Susquehanna River for about a mile  allowing it to "capture"  11 and 15  for about the same distance LOL.

[Darkchylde]

There's probably another county in Missouri that can top this, but Jackson County has six - US 24, 40, 50, 56, 71 and 169.

[hbelkins]

And speaking of Hamilton County...

Hamilton County, Tenn. (Chattanooga): 11, 27, 41, 72, 74, 76 and 127. Remember that 74 is unsigned and runs concurrently with I-75 to the I-24 split.

And I forgot US 64 in that equation.

[dgolub]

There's a couple that I can think of in New York with four:

Westchester County: US 1, US 6, US 9, US 202
Albany County: US 4, US 9, US 9W, US 20

[Duke87]

There's a couple that I can think of in New York with four:

Westchester County: US 1, US 6, US 9, US 202
Albany County: US 4, US 9, US 9W, US 20

US 4 does not enter Albany County. Waterford is in Saratoga County.

The other aforementioned NY example is Orange County: US 6, US 9W, US 202, US 209.

[dgolub]

There's a couple that I can think of in New York with four:

Westchester County: US 1, US 6, US 9, US 202
Albany County: US 4, US 9, US 9W, US 20

US 4 does not enter Albany County. Waterford is in Saratoga County.

The other aforementioned NY example is Orange County: US 6, US 9W, US 202, US 209.

That's what you get for using Google Maps, which doesn't show county lines.

I suppose that US 202 does poke into Orange County for a very short distance before it goes over the Bear Mountain Bridge.

[sandiaman]

In New Mexico we have  a few counties  with four US Highways:

           Union: 56,64,87,412
           Colfax: 56,64,87,412
           Rio Arriba: 64,84,285,550
           Chaves: 70,82,285,380
That  should satisfy  your need for trivia.

[usends]

Cook County, IL has eight: 6, 12, 14, 20, 30, 34, 41, 45
So that's the leader so far.

I'd be surprised if we found a county that surpasses that.
And for a span of about 40 years (1932 to 1972), Cook actually had 10:
Until about 1932, there were also US 66 and US 330 (with US 32 instead of 34), but no US 6 or US 14 (total of 8).
1932: US 6 and US 14 extended to/through Cook Co (10).
1934: US 34 replaced US 32 (still 10).
1942: US 330 replaced with ALT US 30, but US 54 extended to Chicago (still 10).
1972: US 54 truncated out of Chicago (9).
1976: US 66 truncated out of Chicago (8).