How Airports Serve New Jersey
Mark Pearson
This map displays the major airports in and around New Jersey. It shows how the state can divided according to which airport is the closest as the crow flies.
The flags are a sample of 500 census tracts (of 2002 tracts total) within the state.
Some census tract flags may look like they are colored for one airport's region but are actually in another airport's region. The census tract flags are colored with which airport they are closest to as the crow flies along the surface of the earth (the Haversine distance formula). The region boundaries that are displayed on map were computed assuming assuming the earth is flat. (The lines that divide regions are a Voronoi diagram, and I couldn't find any algorithm that calculate the lines on a sphere such as the earth.) In short, although a few census tracts may look like they're mislabeled near a boundary, it's actually the boundary that is slightly wrong.
For more information, see the full report:
http://www.mark-pearson.com/airport-distances/

EWR serves 4,879,589 people in NJ
Newark Liberty International Airport

PHL serves 1,605,798 people in NJ
Philadelphia International Airport

ACY serves 830,645 people in NJ
Atlantic City International Airport

LGA serves 791,606 people in NJ
LaGuardia Airport (and Marine Air Terminal)

JFK serves 273,205 people in NJ
John F. Kennedy International Airport

ABE serves 222,670 people in NJ
Lehigh Valley International Airport

HPN serves 110,086 people in NJ
Westchester County Airport

SWF serves 78,295 people in NJ
Stewart International Airport

dividing line

2,715 people
closest airport: EWR

3,345 people
closest airport: PHL

5,572 people
closest airport: EWR

closest airport: EWR

closest airport: LGA

closest airport: PHL

closest airport: SWF

closest airport: ACY

closest airport: JFK

closest airport: ABE

713 people

closest airport: HPN

16 people