Last official estimated population of Monroe County was 744,647 (year 2014)[1]. This was 0.234% of total US population and 3.8% of total New York state population. Area of Monroe County is 1,366.7 mi² (=3539.8 km²), in this year population density was 544.84 p/mi². If population growth rate would be same as in period 2010-2014 (+0.01%/yr), Monroe County population in 2024 would be 745,405 [0].
Historical population of Monroe 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] +2.67 %/yr
[1840-1850] +3.05 %/yr
[1850-1860] +1.39 %/yr
[1860-1870] +1.59 %/yr
[1870-1880] +2.09 %/yr
[1880-1890] +2.72 %/yr
[1890-1900] +1.4 %/yr
[1900-1910] +2.66 %/yr
[1910-1920] +2.2 %/yr
[1920-1930] +1.87 %/yr
[1930-1940] +0.33 %/yr
[1940-1950] +1.07 %/yr
[1950-1960] +1.86 %/yr
[1960-1970] +1.96 %/yr
[1970-1980] -0.14 %/yr
[1980-1990] +0.17 %/yr
[1990-2000] +0.3 %/yr
[2000-2005] +0.09 %/yr
[2005-2010] +0.16 %/yr
[2010-2014] +0.01 %/yr
Looking for settlements in Monroe County? Visit this page: Settlements in Monroe County, NY
Population of Monroe County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 21436 | 20805 | 42,241 |
| 5 to 9 | 22210 | 21289 | 43,499 |
| 10 to 14 | 23551 | 22475 | 46,026 |
| 15 to 19 | 27141 | 25885 | 53,026 |
| 20 to 24 | 28574 | 28415 | 56,989 |
| 25 to 29 | 27612 | 27514 | 55,126 |
| 30 to 34 | 23393 | 24221 | 47,614 |
| 35 to 39 | 19674 | 21442 | 41,116 |
| 40 to 44 | 21081 | 22900 | 43,981 |
| 45 to 49 | 24007 | 25742 | 49,749 |
| 50 to 54 | 26655 | 28862 | 55,517 |
| 55 to 59 | 25791 | 27450 | 53,241 |
| 60 to 64 | 21723 | 23961 | 45,684 |
| 65 to 69 | 17118 | 19977 | 37,095 |
| 70 to 74 | 12042 | 14557 | 26,599 |
| 75 to 79 | 8190 | 10743 | 18,933 |
| 80 to 84 | 5985 | 8821 | 14,806 |
| 85+ | 6121 | 12494 | 18,615 |
Monroe 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 | 332723 | 356594 | 689,317 |
| WAC | 290061 | 306059 | 596,120 |
| WA | 282056 | 297829 | 579,885 |
| NHWAC | 266784 | 282347 | 549,131 |
| NHWA | 260356 | 275785 | 536,141 |
| BAC | 61955 | 70702 | 132,657 |
| BA | 56334 | 64672 | 121,006 |
| NHBAC | 55465 | 63342 | 118,807 |
| NHBA | 51150 | 58712 | 109,862 |
| H | 29581 | 30959 | 60,540 |
| HWAC | 23277 | 23712 | 46,989 |
| HWA | 21700 | 22044 | 43,744 |
| AAC | 16099 | 16588 | 32,687 |
| NHAAC | 15638 | 16096 | 31,734 |
| AA | 13354 | 13916 | 27,270 |
| NHAA | 13058 | 13595 | 26,653 |
| TOM | 9013 | 9376 | 18,389 |
| NHTOM | 7279 | 7526 | 14,805 |
| HBAC | 6490 | 7360 | 13,850 |
| HBA | 5184 | 5960 | 11,144 |
| IAC | 3281 | 3646 | 6,927 |
| NHIAC | 2275 | 2468 | 4,743 |
| HTOM | 1734 | 1850 | 3,584 |
| IA | 1305 | 1491 | 2,796 |
| HIAC | 1006 | 1178 | 2,184 |
| NHIA | 786 | 840 | 1,626 |
| HIA | 519 | 651 | 1,170 |
| NAC | 499 | 550 | 1,049 |
| HAAC | 461 | 492 | 953 |
| NHNAC | 302 | 357 | 659 |
| HAA | 296 | 321 | 617 |
| NA | 242 | 269 | 511 |
| HNAC | 197 | 193 | 390 |
| HNA | 148 | 133 | 281 |
| NHNA | 94 | 136 | 230 |
• Niagara County population
56.5 mi, 
269°
• Ontario County
45.8 mi, 
156°
• Wayne County
30.2 mi, 
90°
• Cayuga County
63.3 mi, 
119°
• Livingston County
51.2 mi, 
185°
• Genesee County
41.6 mi, 
219°
• Orleans County
28.4 mi, 
275°
• Wyoming County
59.9 mi, 
208°
• Seneca County
63.3 mi, 
138°
• Yates County
63.7 mi, 
153°
[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
See note 10 New York Notes
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