Last official estimated population of Erie County was 280,720 (year 2014)[1]. This was 0.088% of total US population and 2.2% of total Pennsylvania state population. Area of Erie County is 1,558.2 mi² (=4035.8 km²), in this year population density was 180.15 p/mi². If population growth rate would be same as in period 2010-2014 (+0.01%/yr), Erie County population in 2025 would be 281,144 [0].
Historical population of Erie County for period 1800-2014 [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
[1800-1810] +9.86 %/yr
[1810-1820] +8.57 %/yr
[1820-1830] +7.14 %/yr
[1830-1840] +6.28 %/yr
[1840-1850] +2.14 %/yr
[1850-1860] +2.47 %/yr
[1860-1870] +2.93 %/yr
[1870-1880] +1.25 %/yr
[1880-1890] +1.43 %/yr
[1890-1900] +1.35 %/yr
[1900-1910] +1.61 %/yr
[1910-1920] +2.89 %/yr
[1920-1930] +1.33 %/yr
[1930-1940] +0.32 %/yr
[1940-1950] +1.95 %/yr
[1950-1960] +1.34 %/yr
[1960-1970] +0.51 %/yr
[1970-1980] +0.6 %/yr
[1980-1990] -0.15 %/yr
[1990-2000] +0.19 %/yr
[2000-2005] -0.26 %/yr
[2005-2010] +0.24 %/yr
[2010-2014] +0.01 %/yr
Looking for settlements in Erie County? Visit this page: Settlements in Erie County, PA
Population of Erie County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 8144 | 7900 | 16,044 |
| 5 to 9 | 8587 | 8206 | 16,793 |
| 10 to 14 | 8927 | 8220 | 17,147 |
| 15 to 19 | 10198 | 9803 | 20,001 |
| 20 to 24 | 10410 | 10082 | 20,492 |
| 25 to 29 | 9843 | 9417 | 19,260 |
| 30 to 34 | 8553 | 8222 | 16,775 |
| 35 to 39 | 7574 | 7552 | 15,126 |
| 40 to 44 | 8125 | 8220 | 16,345 |
| 45 to 49 | 8853 | 8815 | 17,668 |
| 50 to 54 | 9784 | 9963 | 19,747 |
| 55 to 59 | 10256 | 10494 | 20,750 |
| 60 to 64 | 8957 | 9413 | 18,370 |
| 65 to 69 | 6664 | 7080 | 13,744 |
| 70 to 74 | 4688 | 5426 | 10,114 |
| 75 to 79 | 3237 | 4181 | 7,418 |
| 80 to 84 | 2282 | 3336 | 5,618 |
| 85+ | 2269 | 4762 | 7,031 |
Erie 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 | 131857 | 135870 | 267,727 |
| WAC | 123758 | 128445 | 252,203 |
| WA | 120953 | 125502 | 246,455 |
| NHWAC | 119135 | 124103 | 243,238 |
| NHWA | 116642 | 121487 | 238,129 |
| BAC | 13121 | 12239 | 25,360 |
| NHBAC | 12212 | 11304 | 23,516 |
| BA | 11054 | 10033 | 21,087 |
| NHBA | 10402 | 9372 | 19,774 |
| H | 5494 | 5222 | 10,716 |
| HWAC | 4623 | 4342 | 8,965 |
| HWA | 4311 | 4015 | 8,326 |
| TOM | 2967 | 3096 | 6,063 |
| NHTOM | 2627 | 2745 | 5,372 |
| AAC | 2493 | 2543 | 5,036 |
| NHAAC | 2415 | 2480 | 4,895 |
| AA | 1957 | 2031 | 3,988 |
| NHAA | 1920 | 1991 | 3,911 |
| IAC | 939 | 967 | 1,906 |
| HBAC | 909 | 935 | 1,844 |
| NHIAC | 732 | 750 | 1,482 |
| HBA | 652 | 661 | 1,313 |
| IA | 358 | 364 | 722 |
| HTOM | 340 | 351 | 691 |
| NHIA | 231 | 230 | 461 |
| HIAC | 207 | 217 | 424 |
| NAC | 151 | 165 | 316 |
| HIA | 127 | 134 | 261 |
| NHNAC | 116 | 129 | 245 |
| HAAC | 78 | 63 | 141 |
| NA | 62 | 66 | 128 |
| NHNA | 35 | 45 | 80 |
| HAA | 37 | 40 | 77 |
| HNAC | 35 | 36 | 71 |
| HNA | 27 | 21 | 48 |
• Lake County population
67.9 mi, 
258°
• Trumbull County
66 mi, 
211°
• Chautauqua County
37.5 mi, 
69°
• Mercer County
57.1 mi, 
188°
• Ashtabula County
36.4 mi, 
246°
• Geauga County
70 mi, 
232°
• Crawford County
29.7 mi, 
181°
• Venango County
52.5 mi, 
160°
• Warren County
44.5 mi, 
115°
• Forest County
60.4 mi, 
133°
[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
*Allegheny Pennsylvania Notes
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