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2015 Tree City USA
Communities in Colorado

Updated June, 2015
City Years Population
Frederick 2 11,079
Trinidad 4 8,465
Basalt 5 3,857
Poncha Springs 6 744
Cherry Hills Village 10 6,500
Buckley AFB 11 26,000
Hayden 11 1,850
Olney Springs 11 350
Platteville 12 2,608
New Castle 12 4,574
Campo 12 107
Milliken 13 5,927
Ordway 13 1,038
Superior 13 12,500
Pleasant View 14 4,388
Lone Tree 14 12,720
Crested Butte 15 1,500
Elizabeth 17 1,373
Dillon 18 904
Erie 18 23,000
Swink 18 680
Schriever AFB 18 7,072
Silt 18 3,000
Estes Park 19 5,858
Mancos 20 1,360
Monte Vista 21 4,600
Lafayette 21 28,278
Monument 22 6,391
Eads 22 609
Cedaredge 22 2,300
Carbondale 22 6,553
Peterson AFB 22 13,466
USAF Academy 23 6,049
Parker 23 48,000
Fruita 23 12,600
Aspen 24 6,658
Cortez 24 8,000
Edgewater 24 5,255
Olathe 24 1,800
Rocky Ford 24 3,981
Woodland Park 24 7,200
Springfield 25 1,451
Steamboat Springs 25 12,088
Commerce City 25 50,000
Arvada 25 111,559
Lamar 25 7,804
Limon 25 1,888
Northglenn 26 38,596
Golden 26 19,000
Ken-Caryl Ranch 26 12,950
Grand Lake 26 463
Gunnison 26 5,873
Alamosa 26 9,115
Brush 26 5,400
Broomfield 27 65,178
Buena Vista 27 2,600
Greenwood Village 27 14,652
Montrose 27 19,015
Loveland 27 70,000
Saguache 27 493
Sterling 28 14,637
Lake City 28 400
Highlands Ranch 28 95,000
Fort Carson 29 68,474
Littleton 29 43,775
Lyons 29 1,860
Castle Rock 29 56,645
Salida 29 5,500
Thornton 29 122,000
Brighton 30 36,010
Denver 30 664,220
La Veta 30 765
Englewood 31 34,000
Glenwood Springs 31 10,000
Westminster 31 112,090
Delta 32 8,900
Evans 32 18,537
Florence 32 3,887
Boulder 32 105,112
Aurora 32 353,108
Berthoud 33 5,500
Grand Junction 33 59,788
Lakewood 34 143,000
Palmer Lake 34 2,513
Windsor 35 23,000
Louisville 35 19,588
La Junta 35 6,966
Greeley 36 101,000
Longmont 36 91,911
Canon City 36 16,000
Durango 36 17,834
Pueblo 36 108,423
Wheat Ridge 37 30,500
Fort Collins 38 158,600
Colorado Springs 39 416,427