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Table 1 Dogs imported into 37 Colorado counties from out-of-state sources, 2014–2017

From: Dog importation and changes in heartworm prevalence in Colorado 2013–2017

  2014 2015 2016 2017
Colorado (total) 24,278 28,147 29,908 31,707
Adams 1715 1381 2126 1749
Arapahoe 4322 3078 2356 2566
Archuleta 13 13 18 29
Boulder 2172 3026 2668 2960
Broomfield 160 837 476 376
Chaffee 4 0 39 48
Clear Creek 127 149 68 137
Costilla 46 18 0 0
Delta 414 536 1 0
Denver 957 1355 3159 2755
Douglas 734 1669 5702 5726
Eagle 35 17 6 55
El Paso 1447 2504 2942 4422
Elbert 172 166 124 171
Fremont 259 252 71 54
Garfield 141 102 126 176
Grand 388 253 201 191
Gunnison 83 100 1 44
Huerfano 0 65 280 0
Jefferson 3902 6040 4092 3908
Kit Carson 0 0 3 3
La Plata 365 303 258 20
Larimer 2080 679 2254 2731
Las Animas 736 825 1,042 495
Mesa 161 234 272 251
Montezuma 0 1 0 0
Morgan 8 9 7 18
Ouray 29 28 13 2
Park 9 70 36 328
Pitkin 141 155 53 47
Pueblo 83 21 31 220
Rio Blanco 78 113 0 0
Routt 0 0 48 10
Summit 331 340 127 98
Teller 339 37 94 420
Washington 0 0 0 145
Weld 2827 3771 1214 1552