That's a good question. Jon has a good point about using the County boundaries. Being from South or West county, I've always had an imaginary east/west line to determine No. county, somewhere along Page. Looking at a map, I'd consider an e/w line drawn through Creve Coeur Park would be the southern line. Airport, NW Plaza, etc I consider No. county. Same with the City proper; I still would consider No. city to be in No. county only because it's North of here. Rich ----- Original Message ----- From: Jon Mertz To: geocaching@xxxxxxxxxxxxx Sent: Sunday, November 04, 2007 1:45 PM Subject: [GeoStL] Re: North county Don't use rivers and roads as any boundary except the southern one. Most of North County's boundary is the boundary of St. Louis County. This is definitely predefined. It's the southern boundary of North County that might be a question. Unfortunately I'm learning that the boundaries I grew up understanding are flat-out wrong ( i.e. anything inside of 270 is "The City" and you don't want to be there.) but I'd say hwy 70 is a good start for a southern boundary. I'm not sure how you'd want to treat the airport and surrounding areas. On 11/4/07, Tom <lobocs@xxxxxxxxx> wrote: What would you consider to be the boundaries for "North County"? I am creating a bookmark list for publication of the "north county" caches. I was just wondering what everyone's opinion was. I think it would be: the Mississippi River to the east; the Missouri River to the north and west; Chambers Road/Airport Road/McDonnell Blvd/Hwy 370 to the south and southwest. Lobocs (Tom)