Last official estimated population of Cortland County was 49,257 (year 2014)[1]. This was 0.015% of total US population and 0.2% of total New York state population. Area of Cortland County is 501.5 mi² (=1298.9 km²), in this year population density was 98.22 p/mi². If population growth rate would be same as in period 2010-2014 (-0.04%/yr), Cortland County population in 2026 would be 49,021 [0].
Historical population of Cortland County for period 1810-2014 [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
[1810-1820] +6.41 %/yr
[1820-1830] +3.72 %/yr
[1830-1840] +0.34 %/yr
[1840-1850] +0.21 %/yr
[1850-1860] +0.45 %/yr
[1860-1870] -0.43 %/yr
[1870-1880] +0.26 %/yr
[1880-1890] +1.05 %/yr
[1890-1900] -0.38 %/yr
[1900-1910] +0.59 %/yr
[1910-1920] +0.13 %/yr
[1920-1930] +0.68 %/yr
[1930-1940] +0.6 %/yr
[1940-1950] +0.99 %/yr
[1950-1960] +1.02 %/yr
[1960-1970] +1.11 %/yr
[1970-1980] +0.62 %/yr
[1980-1990] +0.03 %/yr
[1990-2000] -0.05 %/yr
[2000-2005] +0.26 %/yr
[2005-2010] +0 %/yr
[2010-2014] -0.04 %/yr
Looking for settlements in Cortland County? Visit this page: Settlements in Cortland County, NY
Population of Cortland County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1189 | 1160 | 2,349 |
| 5 to 9 | 1386 | 1339 | 2,725 |
| 10 to 14 | 1419 | 1359 | 2,778 |
| 15 to 19 | 2252 | 2467 | 4,719 |
| 20 to 24 | 2802 | 3277 | 6,079 |
| 25 to 29 | 1475 | 1340 | 2,815 |
| 30 to 34 | 1220 | 1310 | 2,530 |
| 35 to 39 | 1290 | 1211 | 2,501 |
| 40 to 44 | 1316 | 1320 | 2,636 |
| 45 to 49 | 1494 | 1491 | 2,985 |
| 50 to 54 | 1725 | 1740 | 3,465 |
| 55 to 59 | 1612 | 1603 | 3,215 |
| 60 to 64 | 1426 | 1468 | 2,894 |
| 65 to 69 | 1174 | 1256 | 2,430 |
| 70 to 74 | 832 | 929 | 1,761 |
| 75 to 79 | 608 | 635 | 1,243 |
| 80 to 84 | 379 | 545 | 924 |
| 85+ | 337 | 638 | 975 |
Cortland 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 | 23285 | 24440 | 47,725 |
| WAC | 23073 | 24242 | 47,315 |
| WA | 22669 | 23817 | 46,486 |
| NHWAC | 22506 | 23676 | 46,182 |
| NHWA | 22165 | 23286 | 45,451 |
| BAC | 752 | 640 | 1,392 |
| H | 651 | 648 | 1,299 |
| NHBAC | 656 | 552 | 1,208 |
| HWAC | 567 | 566 | 1,133 |
| HWA | 504 | 531 | 1,035 |
| BA | 532 | 401 | 933 |
| TOM | 439 | 462 | 901 |
| NHBA | 476 | 338 | 814 |
| NHTOM | 373 | 425 | 798 |
| AAC | 317 | 424 | 741 |
| NHAAC | 306 | 419 | 725 |
| AA | 211 | 315 | 526 |
| NHAA | 207 | 314 | 521 |
| IAC | 218 | 222 | 440 |
| NHIAC | 174 | 199 | 373 |
| HBAC | 96 | 88 | 184 |
| IA | 79 | 86 | 165 |
| NHIA | 60 | 73 | 133 |
| HBA | 56 | 63 | 119 |
| HTOM | 66 | 37 | 103 |
| HIAC | 44 | 23 | 67 |
| NAC | 25 | 29 | 54 |
| NHNAC | 22 | 23 | 45 |
| HIA | 19 | 13 | 32 |
| HAAC | 11 | 5 | 16 |
| NA | 6 | 7 | 13 |
| HNAC | 3 | 6 | 9 |
| NHNA | 4 | 4 | 8 |
| HAA | 4 | 1 | 5 |
| HNA | 2 | 3 | 5 |
• Onondaga County population
29.1 mi, 
347°
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32.4 mi, 
157°
• Tompkins County
22.5 mi, 
244°
• Chemung County
45.7 mi, 
228°
• Cayuga County
38.2 mi, 
318°
• Madison County
30.2 mi, 
43°
• Tioga County
30.9 mi, 
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• Chenango County
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• Seneca County
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• Schuyler County
45.5 mi, 
254°
[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
*Onondaga New York Notes
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