ft myers Fl, 30km
2000 - 0
01 - 5
02 - 23
03 - 28
04 - 65
05 - 55
06 - 58
07 - 127
08 - 115
09 - 100
10 - 345
11 - 268
12 - 180
13 - 363
14 - 248
15 - 140
16 - 191
17 - 54
From those add dates, 842 caches within 30 km still remain active. I think its pretty importent to note if you look at the map though, the cache density is pretty healthy, so placing new quality caches can be harder to do, sure there is plenty of space left, but alot of that space atleast in that area falls into one of three fairly difficult places, State/Nat Forest/Park (of which here in florida a good portion of which gets buried in water half the year), Not so great neighborhoods (either due to crime rate, in one area, alot of farm land in the another, and a lot of empty land that is owned between two of our cities) or dense housing, with little room for much (ALOT of the neighborhoods here have rules and such since so much of this area is either 50+ age neighbordhoods or gated communities)
Atleast here im not so sure the issue is really a lack of interest, its just already pretty saturated.