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2018 Tree City USA
Communities in Colorado

Updated June, 2019. Next update, June 2020.
City Years Population
Alamosa 29 9,220
Arvada 28 115,368
Aspen 27 7,359
Aurora 35 361,710
Basalt 8 3,587
Berthoud 36 8,900
Boulder 35 107,000
Brighton 33 39,211
Broomfield 30 68,845
Brush 29 5,476
Buckley AFB 14 26,000
Buena Vista 30 2,913
Campo 15 102
Canon City 39 16,000
Carbondale 25 6,777
Castle Rock 32 64,981
Cedaredge 25 2,300
Cherry Hills Village 13 6,388
Colorado Springs 42 464,474
Commerce City 28 56,000
Cortez 27 8,500
Crested Butte 18 1,500
Del Norte 10 1,578
Delta 35 8,500
Denver 33 682,454
Durango 39 18,465
Eads 25 590
Eagle 1 6,700
Edgewater 27 5,200
Elizabeth 20 1,350
Englewood 34 35,000
Erie 21 27,000
Estes Park 22 5,858
Evans 35 20,757
Florence 35 3,887
Fort Carson 31 12,200
Fort Collins 41 165,080
Fort Lupton 11 8,163
Frederick 5 12,383
Fruita 26 12,924
Glenwood Springs 34 10,000
Golden 29 20,571
Grand Junction 36 60,210
Grand Lake 29 472
Greeley 39 109,500
Greenwood Village 30 15,721
Gunnison 29 6,530
Hayden 14 2,000
Highlands Ranch 31 96,000
Ken-Caryl Ranch 29 12,950
Kersey 13 1,600
La Junta 38 6,898
La Veta 33 779
Lafayette 24 28,261
Lake City 31 400
Lakewood 37 154,393
Lamar 28 7,534
Limon 28 1,927
Littleton 32 47,734
Lone Tree 17 13,662
Longmont 39 94,777
Louisville 38 21,128
Loveland 30 76,701
Lyons 32 2,053
Mancos 23 1,500
Milliken 16 7,200
Monte Vista 24 4,300
Montrose 30 20,000
Monument 25 4,500
New Castle 15 4,500
Northglenn 29 38,928
Olathe 27 1,800
Olney Springs 14 332
Ordway 16 1,009
Paonia 12 1,451
Parker 26 54,000
Peterson AFB 25 13,466
Platteville 15 2,779
Poncha Springs 9 967
Pueblo 39 109,000
Rocky Ford 27 3,827
Saguache 29 498
Salida 32 5,300
Schriever AFB 21 6,978
Severance 1 5,000
Silt 21 3,010
Springfield 28 1,370
Steamboat Springs 28 12,690
Sterling 31 14,677
Swink 21 592
Thornton 32 140,000
USAF Academy 26 6,680
Westminster 34 113,875
Wheat Ridge 40 31,000
Windsor 38 29,158