Population.us > Counties > Colorado > Jefferson County

Population of Jefferson County

Last official estimated population of Jefferson County was 535,600 (year 2014)[1]. This was 0.168% of total US population and 9.8% of total Colorado state population. Area of Jefferson County is 774.0 mi² (=2004.8 km²), in this year population density was 691.95 p/mi². If population growth rate would be same as in period 2010-2014 (+0.05%/yr), Jefferson County population in 2024 would be 538,252 [0].


Historical population

Historical population of Jefferson County for period 1870-2014 [1] , [2] , [3]:

Maps: Population, population density, population changes

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.

PopulationDensityChangesLegendsPosition

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Annual growth rate

[1870-1880] +11.03 %/yr
[1880-1890] +2.19 %/yr
[1890-1900] +0.97 %/yr
[1900-1910] +4.34 %/yr
[1910-1920] +0.12 %/yr
[1920-1930] +4.24 %/yr
[1930-1940] +3.49 %/yr
[1940-1950] +6.13 %/yr
[1950-1960] +8.64 %/yr
[1960-1970] +6.21 %/yr
[1970-1980] +4.78 %/yr
[1980-1990] +1.66 %/yr
[1990-2000] +1.83 %/yr
[2000-2005] -0.22 %/yr
[2005-2010] +0.57 %/yr
[2010-2014] +0.05 %/yr

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Demography

Population of Jefferson County by age groups male (M) and female (F)[1b]

Age Gr. (M) (F) Total
0 to 4 15052 14349 29,401
5 to 9 16523 15607 32,130
10 to 14 17343 16643 33,986
15 to 19 17765 16004 33,769
20 to 24 17757 16363 34,120
25 to 29 20516 18094 38,610
30 to 34 19800 18542 38,342
35 to 39 17821 17309 35,130
40 to 44 18483 18094 36,577
45 to 49 18611 19289 37,900
50 to 54 21655 23342 44,997
55 to 59 21482 22345 43,827
60 to 64 18281 19499 37,780
65 to 69 14086 15320 29,406
70 to 74 8871 10461 19,332
75 to 79 5992 7433 13,425
80 to 84 4093 5531 9,624
85+ 3494 6653 10,147

Jefferson 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 262180 265072 527,252
WA 255946 258866 514,812
NH 235741 237964 473,705
NHWAC 223536 225364 448,900
NHWA 218947 220877 439,824
H 41884 42914 84,798
HWAC 38644 39708 78,352
HWA 36999 37989 74,988
AAC 9662 11214 20,876
NHAAC 8884 10379 19,263
AA 7130 8749 15,879
NHAA 6782 8349 15,131
TOM 6536 6483 13,019
IAC 6135 6083 12,218
BAC 5962 4828 10,790
NHTOM 4800 4678 9,478
NHBAC 4828 3755 8,583
BA 4232 3146 7,378
IA 3412 3298 6,710
NHIAC 3107 3013 6,120
HIAC 3028 3070 6,098
NHBA 3498 2449 5,947
HIA 1945 1914 3,859
HTOM 1736 1805 3,541
NHIA 1467 1384 2,851
HBAC 1134 1073 2,207
HAAC 778 835 1,613
NAC 763 693 1,456
HBA 734 697 1,431
NHNAC 539 496 1,035
HAA 348 400 748
NA 369 336 705
NHNA 247 227 474
HNAC 224 197 421
HNA 122 109 231

Counties near Jefferson County

Denver County population 23.1 mi, 56°
Arapahoe County 48.8 mi, 84°
Boulder County 36.5 mi, 347°
Douglas County 24.5 mi, 135°
Broomfield County 27.8 mi, 21°
Summit County 47.6 mi, 273°
Teller County 49 mi, 176°
Park County 40.6 mi, 218°
Clear Creek County 23.9 mi, 288°
Gilpin County 24.6 mi, 322°


Sources, notices

[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

Colorado Notes

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