I was a bit taken aback (though I shouldn't have been) by Trump's raw margin in York County, PA--enough, in fact, to give him the whole state at this point.
So I was curious as to where Trump racked up similarly large vote margins in other counties. In other words, roughly, where are the densest concentration of Trump supporters? These are mainly going to be big suburban counties that went heavy for Trump.
| County | Nearest City | Trump Margin |
| York, PA | York | 60004 |
| Collin, TX | Dallas | 60390 |
| Brevard, FL | Titusville | 62169 |
| St. Tammany, LA | New Orleans | 63198 |
| Waukesha, WI | Milwaukee | 63321 |
| Lee, FL | Fort Myers | 66643 |
| El Paso, CO | Colorado Springs | 71218 |
| Ocean, NJ | n/a | 91929 |
| Montgomery, TX | Houston | 104479 |
The margins in York & Waukesha are enough to account for Trump's entire margins in those states. The largest-margin county in Michigan (Macomb, in the Detroit suburbs, with a margin of 48,348) is obviously enough to flip that state as well. Lee & Brevard together would flip Florida.
Utah, UT gets an honorable mention for a 73,600 vote margin between Trump and Clinton, though only a 41,650 margin between Trump and McMullin.
Note that of these, Montgomery, Collin, Waukesha, and St Tammany (the actual suburban commuter counties) actually did swing to Clinton, while the rest swung to Trump.
[Also, what's up with Polk County, OR?]
