Last official estimated population of Washoe County was 422,035 (year 2014)[1]. This was 0.132% of total US population and 14.6% of total Nevada state population. Area of Washoe County is 6,542.2 mi² (=16944.3 km²), in this year population density was 64.51 p/mi². If population growth rate would be same as in period 2010-2014 (+0.04%/yr), Washoe County population in 2025 would be 423,767 [0].
Historical population of Washoe County for period 1870-2014 [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
[1870-1880] +6.24 %/yr
[1880-1890] +1.29 %/yr
[1890-1900] +3.57 %/yr
[1900-1910] +6.67 %/yr
[1910-1920] +0.66 %/yr
[1920-1930] +3.84 %/yr
[1930-1940] +1.8 %/yr
[1940-1950] +4.45 %/yr
[1950-1960] +5.37 %/yr
[1960-1970] +3.63 %/yr
[1970-1980] +4.81 %/yr
[1980-1990] +2.78 %/yr
[1990-2000] +2.92 %/yr
[2000-2005] +2.96 %/yr
[2005-2010] +1.42 %/yr
[2010-2014] +0.04 %/yr
Looking for settlements in Washoe County? Visit this page: Settlements in Washoe County, NV
Population of Washoe County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 13348 | 13130 | 26,478 |
| 5 to 9 | 14418 | 13611 | 28,029 |
| 10 to 14 | 14365 | 13120 | 27,485 |
| 15 to 19 | 14202 | 13425 | 27,627 |
| 20 to 24 | 15875 | 15594 | 31,469 |
| 25 to 29 | 17528 | 16284 | 33,812 |
| 30 to 34 | 15033 | 14417 | 29,450 |
| 35 to 39 | 13330 | 13065 | 26,395 |
| 40 to 44 | 13916 | 13421 | 27,337 |
| 45 to 49 | 14492 | 14123 | 28,615 |
| 50 to 54 | 15555 | 15439 | 30,994 |
| 55 to 59 | 15109 | 15268 | 30,377 |
| 60 to 64 | 13558 | 14150 | 27,708 |
| 65 to 69 | 12124 | 12116 | 24,240 |
| 70 to 74 | 8152 | 8236 | 16,388 |
| 75 to 79 | 4872 | 5445 | 10,317 |
| 80 to 84 | 3036 | 3690 | 6,726 |
| 85+ | 2434 | 4197 | 6,631 |
Washoe 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 | 196206 | 192595 | 388,801 |
| WA | 189718 | 185787 | 375,505 |
| NH | 168629 | 167843 | 336,472 |
| NHWAC | 147416 | 145399 | 292,815 |
| NHWA | 142379 | 140120 | 282,499 |
| H | 52718 | 50888 | 103,606 |
| HWAC | 48790 | 47196 | 95,986 |
| HWA | 47339 | 45667 | 93,006 |
| AAC | 15246 | 17259 | 32,505 |
| NHAAC | 13978 | 15998 | 29,976 |
| AA | 11883 | 13785 | 25,668 |
| NHAA | 11166 | 13097 | 24,263 |
| BAC | 8405 | 7471 | 15,876 |
| TOM | 7191 | 7537 | 14,728 |
| IAC | 6781 | 7070 | 13,851 |
| NHBAC | 7054 | 6226 | 13,280 |
| BA | 6370 | 5251 | 11,621 |
| NHTOM | 5577 | 5819 | 11,396 |
| NHBA | 5432 | 4468 | 9,900 |
| IA | 4632 | 4813 | 9,445 |
| NHIAC | 4228 | 4504 | 8,732 |
| NHIA | 2853 | 3066 | 5,919 |
| HIAC | 2553 | 2566 | 5,119 |
| NAC | 2470 | 2483 | 4,953 |
| NHNAC | 1964 | 2017 | 3,981 |
| HIA | 1779 | 1747 | 3,526 |
| HTOM | 1614 | 1718 | 3,332 |
| NA | 1553 | 1558 | 3,111 |
| HBAC | 1351 | 1245 | 2,596 |
| HAAC | 1268 | 1261 | 2,529 |
| NHNA | 1222 | 1273 | 2,495 |
| HBA | 938 | 783 | 1,721 |
| HAA | 717 | 688 | 1,405 |
| HNAC | 506 | 466 | 972 |
| HNA | 331 | 285 | 616 |
• Nevada County population
115.3 mi, 
210°
• Carson City
109.3 mi, 
182°
• Lassen County
50.7 mi, 
268°
• Churchill County
110.8 mi, 
138°
• Plumas County
79.8 mi, 
230°
• Humboldt County
92.5 mi, 
59°
• Modoc County
80.9 mi, 
317°
• Pershing County
68.8 mi, 
107°
• Storey County
89.8 mi, 175°
• Sierra County
91.9 mi, 209°
[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
*Carson Nevada Notes
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