Last official estimated population of Whatcom County was 201,518 (year 2014)[1]. This was 0.063% of total US population and 2.8% of total Washington state population. Area of Whatcom County is 2,503.3 mi² (=6483.6 km²), in this year population density was 80.50 p/mi². If population growth rate would be same as in period 2010-2014 (+0.05%/yr), Whatcom County population in 2025 would be 202,561 [0].
Historical population of Whatcom County for period 1860-2014 [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
[1860-1870] +4.26 %/yr
[1870-1880] +19.37 %/yr
[1880-1890] +19.48 %/yr
[1890-1900] +2.64 %/yr
[1900-1910] +7.46 %/yr
[1910-1920] +0.22 %/yr
[1920-1930] +1.57 %/yr
[1930-1940] +0.21 %/yr
[1940-1950] +1.01 %/yr
[1950-1960] +0.52 %/yr
[1960-1970] +1.54 %/yr
[1970-1980] +2.67 %/yr
[1980-1990] +1.82 %/yr
[1990-2000] +2.7 %/yr
[2000-2005] +2.14 %/yr
[2005-2010] +1.64 %/yr
[2010-2014] +0.05 %/yr
Looking for settlements in Whatcom County? Visit this page: Settlements in Whatcom County, WA
Population of Whatcom County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 5858 | 5682 | 11,540 |
| 5 to 9 | 5972 | 5638 | 11,610 |
| 10 to 14 | 5917 | 5593 | 11,510 |
| 15 to 19 | 7443 | 7667 | 15,110 |
| 20 to 24 | 11965 | 11836 | 23,801 |
| 25 to 29 | 6906 | 6186 | 13,092 |
| 30 to 34 | 6798 | 6442 | 13,240 |
| 35 to 39 | 6064 | 5944 | 12,008 |
| 40 to 44 | 6050 | 5877 | 11,927 |
| 45 to 49 | 6059 | 6221 | 12,280 |
| 50 to 54 | 6568 | 6657 | 13,225 |
| 55 to 59 | 6517 | 6921 | 13,438 |
| 60 to 64 | 6353 | 7059 | 13,412 |
| 65 to 69 | 5627 | 5917 | 11,544 |
| 70 to 74 | 3785 | 4014 | 7,799 |
| 75 to 79 | 2404 | 2694 | 5,098 |
| 80 to 84 | 1631 | 2071 | 3,702 |
| 85+ | 1461 | 2554 | 4,015 |
Whatcom 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 | 93782 | 95933 | 189,715 |
| WAC | 93687 | 95306 | 188,993 |
| WA | 90140 | 91757 | 181,897 |
| NHWAC | 85307 | 87426 | 172,733 |
| NHWA | 82211 | 84365 | 166,576 |
| H | 9596 | 9040 | 18,636 |
| HWAC | 8380 | 7880 | 16,260 |
| HWA | 7929 | 7392 | 15,321 |
| AAC | 5829 | 6543 | 12,372 |
| NHAAC | 5527 | 6224 | 11,751 |
| IAC | 5020 | 4905 | 9,925 |
| AA | 4058 | 4820 | 8,878 |
| NHAA | 3930 | 4675 | 8,605 |
| NHIAC | 3984 | 3919 | 7,903 |
| TOM | 3882 | 3859 | 7,741 |
| IA | 3455 | 3278 | 6,733 |
| NHTOM | 3367 | 3315 | 6,682 |
| NHIA | 2712 | 2605 | 5,317 |
| BAC | 2496 | 1915 | 4,411 |
| NHBAC | 2152 | 1566 | 3,718 |
| BA | 1524 | 977 | 2,501 |
| NHBA | 1303 | 758 | 2,061 |
| HIAC | 1036 | 986 | 2,022 |
| HIA | 743 | 673 | 1,416 |
| NAC | 679 | 652 | 1,331 |
| NHNAC | 565 | 519 | 1,084 |
| HTOM | 515 | 544 | 1,059 |
| HBAC | 344 | 349 | 693 |
| HAAC | 302 | 319 | 621 |
| NA | 319 | 282 | 601 |
| NHNA | 259 | 215 | 474 |
| HBA | 221 | 219 | 440 |
| HAA | 128 | 145 | 273 |
| HNAC | 114 | 133 | 247 |
| HNA | 60 | 67 | 127 |
• King County population
93.4 mi, 
179°
• Snohomish County
54.5 mi, 176°
• Kitsap County
91.1 mi, 
204°
• Skagit County
24.2 mi, 177°
• Island County
60.8 mi, 
218°
• Chelan County
87.9 mi, 
140°
• Clallam County
106.8 mi, 
241°
• Okanogan County
100.1 mi, 
101°
• Jefferson County
105.7 mi, 
227°
• San Juan County
62.3 mi, 
248°
[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
*Lewis; Clark Washington Notes
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