2014 Tree City USA
Communities in Colorado

Updated June, 2015
City Years Population
Frederick 1 10,196
Trinidad 3 8,465
Basalt 4 3,857
Poncha Springs 5 744
Cherry Hills Village 9 6,500
Buckley AFB 10 12,838
Hayden 10 1,850
Olney Springs 10 350
Platteville 11 2,500
New Castle 11 4,551
Campo 11 109
Milliken 12 6,200
Ordway 12 1,038
Superior 12 12,500
Pleasant View 13 4,388
Lone Tree 13 12,720
Crested Butte 14 1,500
Elizabeth 16 1,378
Dillon 17 904
Erie 17 21,500
Swink 17 611
Schriever AFB 17 7,700
Silt 17 3,000
Estes Park 18 5,858
Mancos 19 1,334
Monte Vista 20 4,600
Lafayette 20 26,629
Monument 21 5,800
Eads 21 750
Cedaredge 21 2,300
Carbondale 21 6,553
Peterson AFB 21 13,466
USAF Academy 22 6,049
Parker 22 45,300
Fruita 22 12,600
Aspen 23 6,548
Cortez 23 8,600
Edgewater 23 5,200
Olathe 23 1,800
Rocky Ford 23 3,981
Woodland Park 23 7,200
Springfield 24 1,413
Steamboat Springs 24 12,088
Commerce City 24 42,000
Arvada 24 108,000
Lamar 24 7,804
Limon 24 1,857
Northglenn 25 35,789
Golden 25 19,000
Ken-Caryl Ranch 25 12,950
Grand Lake 25 471
Gunnison 25 5,854
Alamosa 25 9,018
Brush 25 5,400
Broomfield 26 61,474
Buena Vista 26 2,600
Greenwood Village 26 14,454
Montrose 26 19,000
Loveland 26 68,000
Saguache 26 493
Sterling 27 14,637
Lake City 27 398
Highlands Ranch 27 95,000
Fort Carson 28 75,000
Littleton 28 43,755
Lyons 28 2,033
Castle Rock 28 53,466
Salida 28 5,300
Thornton 28 122,000
Brighton 29 35,300
Denver 29 649,000
La Veta 29 875
Englewood 30 31,000
Glenwood Springs 30 10,000
Westminster 30 109,456
Delta 31 8,900
Evans 31 19,000
Florence 31 3,887
Boulder 31 103,166
Aurora 31 325,078
Berthoud 32 5,267
Grand Junction 32 59,800
Lakewood 33 143,000
Palmer Lake 33 2,513
Windsor 34 22,000
Louisville 34 19,588
La Junta 34 6,966
Greeley 35 100,600
Longmont 35 90,219
Canon City 35 16,000
Durango 35 16,887
Pueblo 35 108,249
Wheat Ridge 36 30,116
Fort Collins 37 155,400
Colorado Springs 38 439,886