Last official estimated population of Orleans County was 42,847 (year 2014)[1]. This was 0.013% of total US population and 0.2% of total New York state population. Area of Orleans County is 817.4 mi² (=2117.1 km²), in this year population density was 52.42 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Orleans County population in 2024 would be 42,757 [0].
Historical population of Orleans County for period 1830-2014 [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
[1830-1840] +3.55 %/yr
[1840-1850] +1.27 %/yr
[1850-1860] +0.08 %/yr
[1860-1870] -0.36 %/yr
[1870-1880] +0.85 %/yr
[1880-1890] +0.22 %/yr
[1890-1900] -0.21 %/yr
[1900-1910] +0.59 %/yr
[1910-1920] -1.11 %/yr
[1920-1930] +0.06 %/yr
[1930-1940] -0.37 %/yr
[1940-1950] +0.72 %/yr
[1950-1960] +1.36 %/yr
[1960-1970] +0.88 %/yr
[1970-1980] +0.31 %/yr
[1980-1990] +0.84 %/yr
[1990-2000] +0.55 %/yr
[2000-2005] -0.32 %/yr
[2005-2010] -0.27 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Orleans County? Visit this page: Settlements in Orleans County, NY
Population of Orleans County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1054 | 992 | 2,046 |
| 5 to 9 | 1143 | 1129 | 2,272 |
| 10 to 14 | 1252 | 1288 | 2,540 |
| 15 to 19 | 1415 | 1270 | 2,685 |
| 20 to 24 | 1626 | 1418 | 3,044 |
| 25 to 29 | 1349 | 1220 | 2,569 |
| 30 to 34 | 1231 | 1250 | 2,481 |
| 35 to 39 | 1103 | 1106 | 2,209 |
| 40 to 44 | 1270 | 1368 | 2,638 |
| 45 to 49 | 1518 | 1557 | 3,075 |
| 50 to 54 | 1838 | 1784 | 3,622 |
| 55 to 59 | 1659 | 1676 | 3,335 |
| 60 to 64 | 1324 | 1351 | 2,675 |
| 65 to 69 | 1120 | 1148 | 2,268 |
| 70 to 74 | 790 | 859 | 1,649 |
| 75 to 79 | 542 | 640 | 1,182 |
| 80 to 84 | 355 | 473 | 828 |
| 85+ | 273 | 593 | 866 |
Orleans 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 | 19822 | 20200 | 40,022 |
| WAC | 18986 | 19552 | 38,538 |
| WA | 18613 | 19175 | 37,788 |
| NHWAC | 18154 | 18784 | 36,938 |
| NHWA | 17827 | 18442 | 36,269 |
| BAC | 1800 | 1520 | 3,320 |
| NHBAC | 1626 | 1396 | 3,022 |
| BA | 1547 | 1275 | 2,822 |
| NHBA | 1403 | 1174 | 2,577 |
| H | 1040 | 922 | 1,962 |
| HWAC | 832 | 768 | 1,600 |
| HWA | 786 | 733 | 1,519 |
| TOM | 410 | 398 | 808 |
| NHTOM | 360 | 359 | 719 |
| IAC | 298 | 275 | 573 |
| NHIAC | 233 | 219 | 452 |
| AAC | 171 | 160 | 331 |
| IA | 163 | 162 | 325 |
| NHAAC | 159 | 152 | 311 |
| HBAC | 174 | 124 | 298 |
| HBA | 144 | 101 | 245 |
| NHIA | 119 | 121 | 240 |
| AA | 118 | 105 | 223 |
| NHAA | 108 | 102 | 210 |
| HIAC | 65 | 56 | 121 |
| HTOM | 50 | 39 | 89 |
| HIA | 44 | 41 | 85 |
| NAC | 24 | 22 | 46 |
| NHNAC | 16 | 15 | 31 |
| HAAC | 12 | 8 | 20 |
| NA | 11 | 7 | 18 |
| HNAC | 8 | 7 | 15 |
| HAA | 10 | 3 | 13 |
| HNA | 6 | 5 | 11 |
| NHNA | 5 | 2 | 7 |
• Erie County population
58.7 mi, 
208°
• Monroe County
28.4 mi, 
95°
• Niagara County
28.4 mi, 
263°
• Ontario County
64.6 mi, 
133°
• Wayne County
58.6 mi, 
92°
• Livingston County
58.3 mi, 
156°
• Genesee County
34.7 mi, 
176°
• Wyoming County
55.3 mi, 179°
• Seneca County
86.5 mi, 125°
• Yates County
82.4 mi, 
136°
[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
*Genesee New York Notes
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