Last official estimated population of Ashtabula County was 101,409 (year 2014)[1]. This was 0.032% of total US population and 0.9% of total Ohio state population. Area of Ashtabula County is 1,367.9 mi² (=3542.8 km²), in this year population density was 74.14 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Ashtabula County population in 2026 would be 101,145 [0].
Historical population of Ashtabula County for period 1820-2014 [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
[1820-1830] +7.05 %/yr
[1830-1840] +4.99 %/yr
[1840-1850] +1.95 %/yr
[1850-1860] +1.01 %/yr
[1860-1870] +0.22 %/yr
[1870-1880] +1.34 %/yr
[1880-1890] +1.63 %/yr
[1890-1900] +1.66 %/yr
[1900-1910] +1.47 %/yr
[1910-1920] +0.96 %/yr
[1920-1930] +0.42 %/yr
[1930-1940] +0.05 %/yr
[1940-1950] +1.37 %/yr
[1950-1960] +1.69 %/yr
[1960-1970] +0.54 %/yr
[1970-1980] +0.59 %/yr
[1980-1990] -0.42 %/yr
[1990-2000] +0.28 %/yr
[2000-2005] -0.01 %/yr
[2005-2010] -0.22 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Ashtabula County? Visit this page: Settlements in Ashtabula County, OH
Population of Ashtabula County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2866 | 2738 | 5,604 |
| 5 to 9 | 3205 | 3032 | 6,237 |
| 10 to 14 | 3342 | 3165 | 6,507 |
| 15 to 19 | 3159 | 2971 | 6,130 |
| 20 to 24 | 3058 | 2721 | 5,779 |
| 25 to 29 | 2925 | 2579 | 5,504 |
| 30 to 34 | 2979 | 2599 | 5,578 |
| 35 to 39 | 2821 | 2627 | 5,448 |
| 40 to 44 | 3224 | 2996 | 6,220 |
| 45 to 49 | 3521 | 3387 | 6,908 |
| 50 to 54 | 3831 | 3742 | 7,573 |
| 55 to 59 | 3817 | 3867 | 7,684 |
| 60 to 64 | 3376 | 3396 | 6,772 |
| 65 to 69 | 2683 | 2939 | 5,622 |
| 70 to 74 | 2019 | 2195 | 4,214 |
| 75 to 79 | 1341 | 1599 | 2,940 |
| 80 to 84 | 898 | 1225 | 2,123 |
| 85+ | 813 | 1519 | 2,332 |
Ashtabula 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 | 47818 | 47551 | 95,369 |
| WAC | 46955 | 47601 | 94,556 |
| WA | 45919 | 46702 | 92,621 |
| NHWAC | 45104 | 46041 | 91,145 |
| NHWA | 44156 | 45209 | 89,365 |
| BAC | 3199 | 1855 | 5,054 |
| NHBAC | 3018 | 1707 | 4,725 |
| H | 2060 | 1746 | 3,806 |
| BA | 2505 | 1247 | 3,752 |
| NHBA | 2384 | 1141 | 3,525 |
| HWAC | 1851 | 1560 | 3,411 |
| HWA | 1763 | 1493 | 3,256 |
| TOM | 1073 | 942 | 2,015 |
| NHTOM | 980 | 870 | 1,850 |
| IAC | 486 | 406 | 892 |
| NHIAC | 401 | 345 | 746 |
| AAC | 309 | 364 | 673 |
| NHAAC | 275 | 329 | 604 |
| AA | 192 | 259 | 451 |
| NHAA | 166 | 235 | 401 |
| HBAC | 181 | 148 | 329 |
| IA | 174 | 126 | 300 |
| HBA | 121 | 106 | 227 |
| NHIA | 124 | 87 | 211 |
| HTOM | 93 | 72 | 165 |
| HIAC | 85 | 61 | 146 |
| HIA | 50 | 39 | 89 |
| NAC | 38 | 49 | 87 |
| HAAC | 34 | 35 | 69 |
| NHNAC | 30 | 34 | 64 |
| HAA | 26 | 24 | 50 |
| NA | 15 | 21 | 36 |
| HNAC | 8 | 15 | 23 |
| HNA | 7 | 12 | 19 |
| NHNA | 8 | 9 | 17 |
• Cuyahoga County population
51.4 mi, 
258°
• Erie County
36.4 mi, 
66°
• Mahoning County
61.9 mi, 
181°
• Lake County
33.3 mi, 
272°
• Trumbull County
41.5 mi, 181°
• Portage County
56.1 mi, 
204°
• Mercer County
49 mi, 
148°
• Geauga County
35.8 mi, 
218°
• Crawford County
36.2 mi, 
114°
• Venango County
61.9 mi, 
124°
[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
*Geauga, Trumbull Ohio Notes
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