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2019 Tree City USA
Communities in Colorado

Updated June, 2020. Next update, June 2021.
City Years Population
Alamosa 30 9,410
Arvada 29 118,807
Aspen 28 7,365
Aurora 36 366,623
Basalt 9 4,170
Berthoud 37 9,000
Boulder 37 108,090
Brighton 34 39,993
Broomfield 31 69,267
Brush 30 5,463
Buckley AFB 15 26,000
Buena Vista 31 2,993
Campo 16 102
Canon City 40 16,500
Carbondale 26 6,820
Castle Rock 33 65,903
Cedaredge 26 2,300
Cherry Hills Village 14 6,388
Colorado Springs 43 464,474
Commerce City 29 56,000
Cortez 28 8,600
Crested Butte 19 1,500
Del Norte 11 1,578
Denver 34 705,439
Durango 40 18,985
Eads 26 590
Eagle 2 6,700
Edgewater 28 5,308
Elizabeth 21 1,400
Englewood 35 34,407
Erie 22 28,308
Estes Park 23 5,858
Evans 36 20,757
Florence 36 3,887
Fort Carson 32 12,200
Fort Collins 42 167,830
Fort Lupton 12 8,163
Frederick 6 13,352
Fruita 27 13,294
Glenwood Springs 35 10,000
Golden 30 20,571
Grand Junction 37 62,475
Grand Lake 30 475
Greeley 40 108,175
Greenwood Village 31 15,721
Gunnison 30 6,530
Hayden 15 1,925
Highlands Ranch 32 96,000
Ken-Caryl Ranch 30 12,950
Kersey 14 1,600
La Junta 39 6,898
La Veta 34 830
Lafayette 25 28,261
Lake City 32 400
Lakewood 38 154,393
Lamar 29 7,534
Limon 29 1,924
Littleton 33 48,007
Lone Tree 18 14,900
Longmont 40 94,341
Louisville 39 21,163
Loveland 31 77,446
Lyons 33 2,053
Mancos 24 1,407
Manitou Springs 1 5,200
Milliken 17 8,000
Monte Vista 25 4,300
Montrose 31 20,000
Monument 26 3,500
New Castle 16 4,700
Northglenn 30 39,010
Olathe 28 1,800
Olney Springs 15 323
Ordway 17 1,023
Paonia 13 1,450
Peterson AFB 26 13,466
Platteville 16 3,000
Poncha Springs 10 998
Pueblo 40 111,750
Rocky Ford 28 3,827
Salida 33 5,800
Schriever AFB 22 7,058
Severance 2 7,000
Silt 22 3,100
Springfield 29 1,370
Steamboat Springs 29 12,690
Sterling 32 15,000
Superior 16 13,000
Swink 22 598
Thornton 34 144,000
Trinidad 7 8,211
USAF Academy 27 6,680
Westminster 35 113,875
Wheat Ridge 41 31,000
Windsor 39 34,500