Jefferson County population

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.

Population • Density • Changes • Legends • Position

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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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Looking for settlements in Jefferson County? Visit this page: Settlements in Jefferson County, CO

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°