This will give you the center of your points however, that point may fall ouside of the polygon described by those points depending on the placement.

P₁(Long₁,Lat₁)
P₂(Long₂,Lat₂)
:
P_n(Long_n,Lat_n)

(Long₁+Long₂+...+Long_n)/n
(Lat₁+Lat₂+...+Lat_n)/n

where n = number of points

>Hi All,
>
>I have a need to develop an algorithm that will find the center point of 'N' other points. The total number of other points will be from 2 to 5 typically, though it could go up to around 20.
>
>I have an algorithm that will give me all ZIP locations within a circle useing the Longitude and Latitude which is somewhat the corrolat of my new need.
>
>I will also have a complete set of Longitudes and Latitudes that I can use as a source for mathematical equations. Each of the 'N' points will be able to determine its associated Longitude and Latitude.
>
>I have a couple ideas I'm toying around with but was wondering if anyone here has done this already.
>
>Thanks for your help!