USA - Colorado

Census Results

1960-04-01 1,753,947
1970-04-01 2,207,259
1980-04-01 2,889,964
1990-04-01 3,294,394
2000-04-01 4,301,261
2010-04-01 5,029,196

General Information

Official name Colorado
Official name [native] Colorado
Capital Denver
Capital [native] Denver
ISO code US-CO
Statistical agency Bureau of the Census, USA

Administrative units

codecountiescapitalarea (sq.km.)population
2000-04-01
census
population
2010-04-01
census
population
2013-07-01
estimate
08001Adams CountyBrighton3,024.20363,857441,603469,193
08003Alamosa CountyAlamosa1,871.6314,96615,44516,253
08005Arapahoe CountyLittleton2,067.07487,967572,003607,070
08007Archuleta CountyPagosa Springs3,496.959,89812,08412,194
08009Baca CountySpringfield6,617.344,5173,7883,682
08011Bent CountyLas Animas3,918.295,9986,4995,688
08013Boulder CountyBoulder1,881.08291,288294,567310,048
08014Broomfield CountyBroomfield85.55 55,88959,471
08015Chaffee CountySalida2,624.6916,24217,80918,510
08017Cheyenne CountyCheyenne Wells4,605.722,2311,8361,890
08019Clear Creek CountyGeorgetown1,023.649,3229,0889,031
08021Conejos CountyConejos3,334.328,4008,2568,277
08023Costilla CountySan Luis3,177.793,6633,5243,518
08025Crowley CountyOrdway2,039.415,5185,8235,322
08027Custer CountyWestcliffe1,913.043,5034,2554,285
08029Delta CountyDelta2,957.9027,83430,95230,483
08031Denver CountyDenver396.27554,636600,158649,495
08033Dolores CountyDove Creek2,763.651,8442,0642,029
08035Douglas CountyCastle Rock2,176.24175,766285,465305,963
08037Eagle CountyEagle4,362.9141,65952,19752,460
08039Elbert CountyKiowa4,793.6819,87223,08623,733
08041El Paso CountyColorado Springs5,508.39516,929622,263655,044
08043Fremont CountyCanon City3,970.6346,14546,82446,451
08045Garfield CountyGlenwood Springs7,634.1543,79156,38957,302
08047Gilpin CountyCentral City388.244,7575,4415,601
08049Grand CountyHot Sulphur Springs4,781.9712,44214,84314,289
08051Gunnison CountyGunnison8,389.2313,95615,32415,507
08053Hinsdale CountyLake City2,893.66790843813
08055Huerfano CountyWalsenburg4,120.677,8626,7116,519
08057Jackson CountyWalden4,179.521,5771,3941,365
08059Jefferson CountyGolden1,979.29527,056534,543551,798
08061Kiowa CountyEads4,578.501,6221,3981,423
08063Kit Carson CountyBurlington5,596.508,0118,2708,037
08065Lake CountyDurango976.197,8127,3107,306
08067La Plata CountyLeadville4,382.4743,94151,33453,284
08069Larimer CountyFort Collins6,723.61251,494299,630315,988
08071Las Animas CountyTrinidad12,361.1615,20715,50714,446
08073Lincoln CountyHugo6,676.036,0875,4675,430
08075Logan CountySterling4,761.8220,50422,70922,450
08077Mesa CountyGrand Junction8,621.99116,255146,723147,554
08079Mineral CountyCreede2,267.97831712721
08081Moffat CountyCraig12,285.0613,18413,79513,103
08083Montezuma CountyCortez5,256.4623,83025,53525,642
08085Montrose CountyMontrose5,803.3933,43241,27640,713
08087Morgan CountyFort Morgan3,316.3027,17128,15928,404
08089Otero CountyLa Junta3,268.4620,31118,83118,703
08091Ouray CountyOuray1,402.713,7424,4364,557
08093Park CountyFairplay5,682.0514,52316,20616,121
08095Phillips CountyHolyoke1,781.734,4804,4424,356
08097Pitkin CountyAspen2,514.1014,87217,14817,379
08099Prowers CountyLamar4,243.4414,48312,55112,291
08101Pueblo CountyPueblo6,179.97141,472159,063161,451
08103Rio Blanco CountyMeeker8,342.175,9866,6666,807
08105Rio Grande CountyDel Norte2,361.9712,41311,98211,803
08107Routt CountySteamboat Springs6,117.6319,69023,50923,513
08109Saguache CountySaguache8,206.465,9176,1086,208
08111San Juan CountySilverton1,003.59558699692
08113San Miguel CountyTelluride3,332.306,5947,3597,678
08115Sedgwick CountyJulesburg1,419.422,7472,3792,360
08117Summit CountyBreckenridge1,575.6523,54827,99428,649
08119Teller CountyCripple Creek1,442.7820,55523,35023,275
08121Washington CountyAkron6,521.674,9264,8144,803
08123Weld CountyGreeley10,326.90180,936252,825269,785
08125Yuma CountyWray6,123.799,84110,04310,151
 total 268,431.264,301,2615,029,1965,268,367
source: Bureau of the Census, USA.
note: area = land area in square kilometers (km2) [to get square miles divide km2 area by 2.589988].

Main cities

namepopulation
1990-04-01
census
population
2000-04-01
census
population
2010-04-01
census
population
2013-07-01
estimate
Denver467,610554,636600,158649,495
Colorado Springs281,140360,890416,427439,886
Aurora222,103276,393325,078345,803
Fort Collins87,758118,652143,986152,061
Lakewood126,481144,126142,980147,214
Thornton55,03182,384118,772127,359
Arvada89,235102,153106,433111,707
Westminster74,625100,940106,114110,945
Pueblo98,640102,121106,595108,249
Centennial....100,377106,114
Boulder....97,385103,166
Greeley....92,88996,539
Longmont....86,27089,919
Loveland....66,85971,334
Grand Junction....58,56659,778
Broomfield....55,88959,471
Castle Rock....48,23153,063
source: Bureau of the Census, USA.