$29$ BONUS POINTS if you get the formula correct

$30$ Step $1$: VLOOKUP Latitude

Step $2$: IF test

Nested functions

$\backslash$table$[[,33\mathrm{.}75,=$ VLOOKUP $$5,$zipcodes $ B $$K,8,$ FALSE$)],[$South$,,15>=$$E$$15,$ "North","South"$)]]$

$=$IF$($VLOOKUP$($$B$$5,$zipcodesI$B:$K$,8,$FALSE$)+$C$9)$