Last official estimated population of Washington County was 63,316 (year 2014)[1]. This was 0.02% of total US population and 0.3% of total New York state population. Area of Washington County is 845.9 mi² (=2190.8 km²), in this year population density was 74.85 p/mi². If population growth rate would be same as in period 2010-2014 (+0.04%/yr), Washington County population in 2026 would be 63,617 [0].
Historical population of Washington County for period 1790-2014 [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

[1790-1800] +9.81 %/yr
[1800-1810] +2.15 %/yr
[1810-1820] -1.31 %/yr
[1820-1830] +0.94 %/yr
[1830-1840] -0.37 %/yr
[1840-1850] +0.86 %/yr
[1850-1860] +0.25 %/yr
[1860-1870] +0.77 %/yr
[1870-1880] -0.35 %/yr
[1880-1890] -0.47 %/yr
[1890-1900] -0.01 %/yr
[1900-1910] +0.46 %/yr
[1910-1920] -0.62 %/yr
[1920-1930] +0.35 %/yr
[1930-1940] +0.05 %/yr
[1940-1950] +0.09 %/yr
[1950-1960] +0.28 %/yr
[1960-1970] +0.84 %/yr
[1970-1980] +0.39 %/yr
[1980-1990] +0.8 %/yr
[1990-2000] +0.28 %/yr
[2000-2005] +0.47 %/yr
[2005-2010] +0.24 %/yr
[2010-2014] +0.04 %/yr
Looking for settlements in Washington County? Visit this page: Settlements in Washington County, NY
Population of Washington County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1658 | 1382 | 3,040 |
| 5 to 9 | 1754 | 1687 | 3,441 |
| 10 to 14 | 1855 | 1705 | 3,560 |
| 15 to 19 | 2043 | 1681 | 3,724 |
| 20 to 24 | 2249 | 1665 | 3,914 |
| 25 to 29 | 2100 | 1722 | 3,822 |
| 30 to 34 | 1950 | 1678 | 3,628 |
| 35 to 39 | 1991 | 1626 | 3,617 |
| 40 to 44 | 2167 | 1872 | 4,039 |
| 45 to 49 | 2457 | 2263 | 4,720 |
| 50 to 54 | 2539 | 2457 | 4,996 |
| 55 to 59 | 2460 | 2426 | 4,886 |
| 60 to 64 | 2164 | 2054 | 4,218 |
| 65 to 69 | 1754 | 1821 | 3,575 |
| 70 to 74 | 1292 | 1386 | 2,678 |
| 75 to 79 | 844 | 947 | 1,791 |
| 80 to 84 | 616 | 740 | 1,356 |
| 85+ | 446 | 921 | 1,367 |
Washington 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 | 31261 | 29533 | 60,794 |
| WAC | 30176 | 29509 | 59,685 |
| WA | 29841 | 29182 | 59,023 |
| NHWAC | 29368 | 29055 | 58,423 |
| NHWA | 29071 | 28761 | 57,832 |
| BAC | 2054 | 367 | 2,421 |
| NHBAC | 1813 | 326 | 2,139 |
| BA | 1893 | 206 | 2,099 |
| NHBA | 1671 | 182 | 1,853 |
| H | 1078 | 500 | 1,578 |
| HWAC | 808 | 454 | 1,262 |
| HWA | 770 | 421 | 1,191 |
| TOM | 359 | 353 | 712 |
| NHTOM | 318 | 320 | 638 |
| AAC | 214 | 290 | 504 |
| NHAAC | 198 | 276 | 474 |
| IAC | 242 | 212 | 454 |
| NHIAC | 195 | 188 | 383 |
| AA | 131 | 207 | 338 |
| NHAA | 121 | 196 | 317 |
| HBAC | 241 | 41 | 282 |
| HBA | 222 | 24 | 246 |
| IA | 105 | 71 | 176 |
| NHIA | 76 | 61 | 137 |
| HTOM | 41 | 33 | 74 |
| HIAC | 47 | 24 | 71 |
| NAC | 24 | 30 | 54 |
| NHNAC | 16 | 27 | 43 |
| HIA | 29 | 10 | 39 |
| HAAC | 16 | 14 | 30 |
| NA | 10 | 14 | 24 |
| HAA | 10 | 11 | 21 |
| NHNA | 4 | 13 | 17 |
| HNAC | 8 | 3 | 11 |
| HNA | 6 | 1 | 7 |
• Saratoga County population
25.3 mi,
235°
• Rensselaer County
41.8 mi,
185°
• Schenectady County
45.8 mi,
221°
• Warren County
26.1 mi,
309°
• Rutland County
27.4 mi,
47°
• Windsor County
45.8 mi,
66°
• Fulton County
51.4 mi,
254°
• Windham County
42.3 mi,
121°
• Bennington County
25.3 mi,
139°
• Addison County
51.8 mi,
16°
[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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