Last official estimated population of Clark County was 426,869 (year 2014)[1]. This was 0.134% of total US population and 6% of total Washington state population. Area of Clark County is 656.2 mi² (=1699.6 km²), in this year population density was 650.48 p/mi². If population growth rate would be same as in period 2010-2014 (+0.09%/yr), Clark County population in 2025 would be 431,038 [0].
Historical population of Clark County for period 1850-2014 [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
[1850-1860] +14 %/yr
[1860-1870] +2.6 %/yr
[1870-1880] +5.95 %/yr
[1880-1890] +7.87 %/yr
[1890-1900] +1.37 %/yr
[1900-1910] +6.89 %/yr
[1910-1920] +2.31 %/yr
[1920-1930] +2.08 %/yr
[1930-1940] +2.15 %/yr
[1940-1950] +5.52 %/yr
[1950-1960] +0.95 %/yr
[1960-1970] +3.19 %/yr
[1970-1980] +4.11 %/yr
[1980-1990] +2.16 %/yr
[1990-2000] +3.79 %/yr
[2000-2005] +2.69 %/yr
[2005-2010] +1.53 %/yr
[2010-2014] +0.09 %/yr
Looking for settlements in Clark County? Visit this page: Settlements in Clark County, WA
Population of Clark County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 14599 | 13883 | 28,482 |
| 5 to 9 | 16202 | 15716 | 31,918 |
| 10 to 14 | 17053 | 16161 | 33,214 |
| 15 to 19 | 15836 | 14721 | 30,557 |
| 20 to 24 | 14096 | 13165 | 27,261 |
| 25 to 29 | 14150 | 13920 | 28,070 |
| 30 to 34 | 14491 | 14927 | 29,418 |
| 35 to 39 | 14916 | 15195 | 30,111 |
| 40 to 44 | 15391 | 15442 | 30,833 |
| 45 to 49 | 14951 | 15026 | 29,977 |
| 50 to 54 | 15583 | 16133 | 31,716 |
| 55 to 59 | 14856 | 15290 | 30,146 |
| 60 to 64 | 13010 | 14245 | 27,255 |
| 65 to 69 | 10944 | 12092 | 23,036 |
| 70 to 74 | 7452 | 8015 | 15,467 |
| 75 to 79 | 4600 | 5146 | 9,746 |
| 80 to 84 | 2799 | 3700 | 6,499 |
| 85+ | 2545 | 4757 | 7,302 |
Clark 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 |
| NH | 203441 | 208457 | 411,898 |
| WAC | 203544 | 207070 | 410,614 |
| WA | 195360 | 198552 | 393,912 |
| NHWAC | 185496 | 189778 | 375,274 |
| NHWA | 178364 | 182384 | 360,748 |
| H | 20033 | 19077 | 39,110 |
| HWAC | 18048 | 17292 | 35,340 |
| HWA | 16996 | 16168 | 33,164 |
| AAC | 13261 | 14799 | 28,060 |
| NHAAC | 12565 | 14139 | 26,704 |
| AA | 9667 | 11191 | 20,858 |
| NHAA | 9313 | 10907 | 20,220 |
| TOM | 8763 | 9102 | 17,865 |
| NHTOM | 7617 | 7887 | 15,504 |
| BAC | 7991 | 7290 | 15,281 |
| NHBAC | 7139 | 6453 | 13,592 |
| IAC | 5471 | 5666 | 11,137 |
| BA | 5247 | 4478 | 9,725 |
| NHBA | 4767 | 4006 | 8,773 |
| NHIAC | 3935 | 4223 | 8,158 |
| NAC | 2975 | 2885 | 5,860 |
| NHNAC | 2729 | 2595 | 5,324 |
| IA | 2555 | 2447 | 5,002 |
| NA | 1882 | 1764 | 3,646 |
| NHNA | 1766 | 1632 | 3,398 |
| NHIA | 1614 | 1641 | 3,255 |
| HIAC | 1536 | 1443 | 2,979 |
| HTOM | 1146 | 1215 | 2,361 |
| HIA | 941 | 806 | 1,747 |
| HBAC | 852 | 837 | 1,689 |
| HAAC | 696 | 660 | 1,356 |
| HBA | 480 | 472 | 952 |
| HAA | 354 | 284 | 638 |
| HNAC | 246 | 290 | 536 |
| HNA | 116 | 132 | 248 |
• Multnomah County population
15.8 mi, 
167°
• Washington County
33.2 mi, 
242°
• Clackamas County
44.5 mi, 
161°
• Cowlitz County
29.8 mi, 
343°
• Yamhill County
54.1 mi, 
228°
• Lewis County
56.1 mi, 
5°
• Columbia County
31 mi, 
292°
• Hood River County
43.9 mi, 
114°
• Skamania County
31 mi, 
55°
• Wahkiakum County
57.7 mi, 
308°
[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
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