Last official estimated population of Adams County was 443,668 (year 2014)[1]. This was 0.139% of total US population and 8.1% of total Colorado state population. Area of Adams County is 1,183.4 mi² (=3065 km²), in this year population density was 374.90 p/mi². If population growth rate would be same as in period 2010-2014 (+0.12%/yr), Adams County population in 2023 would be 448,350 [0].
Historical population of Adams County for period 1890-2014 [1] , [2] , [3]:
Estimated population for 2014[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are approx. 2012 [5]. Click on flag to hide it.
Population • Density • Changes • Legends • Position
[1890-1900] -100 %/yr
[1900-1910] -100 %/yr
[1910-1920] +4.96 %/yr
[1920-1930] +3.44 %/yr
[1930-1940] +1.05 %/yr
[1940-1950] +5.99 %/yr
[1950-1960] +11.57 %/yr
[1960-1970] +4.44 %/yr
[1970-1980] +2.84 %/yr
[1980-1990] +0.75 %/yr
[1990-2000] +2.76 %/yr
[2000-2005] +2.57 %/yr
[2005-2010] +2.25 %/yr
[2010-2014] +0.12 %/yr
Looking for settlements in Adams County? Visit this page: Settlements in Adams County, CO
Population of Adams County by age groups male (M) and female (F)[1b]
Age Gr. | (M) | (F) | Total |
0 to 4 | 18824 | 17735 | 36,559 |
5 to 9 | 19913 | 18984 | 38,897 |
10 to 14 | 19098 | 18327 | 37,425 |
15 to 19 | 16147 | 15129 | 31,276 |
20 to 24 | 16468 | 15942 | 32,410 |
25 to 29 | 19313 | 18406 | 37,719 |
30 to 34 | 20152 | 19417 | 39,569 |
35 to 39 | 18719 | 17287 | 36,006 |
40 to 44 | 17505 | 16436 | 33,941 |
45 to 49 | 15666 | 15053 | 30,719 |
50 to 54 | 15518 | 15152 | 30,670 |
55 to 59 | 13731 | 13863 | 27,594 |
60 to 64 | 10665 | 11270 | 21,935 |
65 to 69 | 8102 | 8899 | 17,001 |
70 to 74 | 4993 | 6159 | 11,152 |
75 to 79 | 3346 | 4377 | 7,723 |
80 to 84 | 2288 | 3055 | 5,343 |
85+ | 1681 | 3098 | 4,779 |
Adams County resident population estimates by Sex, Race, and Hispanic Origin[1b]. For full list of abbrevations see: population.us/about page.
Race | Male | Female | Total |
WAC | 216910 | 213913 | 430,823 |
WA | 210588 | 207410 | 417,998 |
NH | 146708 | 147546 | 294,254 |
NHWAC | 128205 | 129399 | 257,604 |
NHWA | 124246 | 125373 | 249,619 |
H | 95421 | 91043 | 186,464 |
HWAC | 88705 | 84514 | 173,219 |
HWA | 86342 | 82037 | 168,379 |
AAC | 11591 | 12449 | 24,040 |
BAC | 11836 | 10719 | 22,555 |
NHAAC | 10438 | 11220 | 21,658 |
AA | 9408 | 10236 | 19,644 |
NHAA | 8715 | 9468 | 18,183 |
NHBAC | 9443 | 8343 | 17,786 |
BA | 9337 | 8220 | 17,557 |
IAC | 8361 | 8248 | 16,609 |
NHBA | 7640 | 6535 | 14,175 |
TOM | 6940 | 7067 | 14,007 |
HIAC | 5749 | 5648 | 11,397 |
IA | 5282 | 5042 | 10,324 |
NHTOM | 4308 | 4347 | 8,655 |
HIA | 3841 | 3643 | 7,484 |
HTOM | 2632 | 2720 | 5,352 |
NHIAC | 2612 | 2600 | 5,212 |
HBAC | 2393 | 2376 | 4,769 |
HBA | 1697 | 1685 | 3,382 |
NHIA | 1441 | 1399 | 2,840 |
HAAC | 1153 | 1229 | 2,382 |
NAC | 1019 | 1054 | 2,073 |
HAA | 693 | 768 | 1,461 |
NHNAC | 633 | 686 | 1,319 |
NA | 574 | 614 | 1,188 |
NHNA | 358 | 424 | 782 |
HNAC | 386 | 368 | 754 |
HNA | 216 | 190 | 406 |
• Denver County population
30.2 mi, 255°
• Arapahoe County
15.9 mi, 179°
• Jefferson County
52.6 mi, 247°
• Boulder County
58.4 mi, 285°
• Douglas County
49.4 mi, 219°
• Weld County
47.1 mi, 355°
• Broomfield County
38.6 mi, 278°
• Morgan County
38.4 mi, 45°
• Elbert County
40.6 mi, 163°
• Washington County
59.8 mi, 83°
[0] Calculated by population.us from last known population growth rate, not official data.
[1] County population - 2014, archived from the original, retrieved 02/23/2016
[1b] Annual County Resident Population Estimates by Age, Sex, Race, and Hispanic Origin, (used only data for 2014) archived from the original, retrieved 02/23/2016
[2] County population - 2000-2010, archived from the original, retrieved 02/23/2016
[3] Population of States and Counties of the United States: 1790 to 1992, PDF, 15 Mb, census.gov, retrieved 02/23/2016
[4] County area, latitude longitude data, retrieved 02/23/2016
[5] County boundaries, CSV files on boundaries.us, retrived 03/18/2016
*Arapahoe Colorado Notes
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