Last official estimated population of Kennebec County was 122,053 (year 2014)[1]. This was 0.038% of total US population and 9.2% of total Maine state population. Area of Kennebec County is 951.2 mi² (=2463.5 km²), in this year population density was 128.32 p/mi². If population growth rate would be same as in period 2010-2014 (-0.02%/yr), Kennebec County population in 2025 would be 121,784 [0].
Historical population of Kennebec 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] +2.86 %/yr
[1810-1820] +2.73 %/yr
[1820-1830] +2.1 %/yr
[1830-1840] +0.62 %/yr
[1840-1850] +1.14 %/yr
[1850-1860] -1.16 %/yr
[1860-1870] -0.45 %/yr
[1870-1880] -0.03 %/yr
[1880-1890] +0.72 %/yr
[1890-1900] +0.36 %/yr
[1900-1910] +0.62 %/yr
[1910-1920] +0.15 %/yr
[1920-1930] +1.02 %/yr
[1930-1940] +0.89 %/yr
[1940-1950] +0.83 %/yr
[1950-1960] +0.61 %/yr
[1960-1970] +0.66 %/yr
[1970-1980] +1.44 %/yr
[1980-1990] +0.53 %/yr
[1990-2000] +0.1 %/yr
[2000-2005] +0.65 %/yr
[2005-2010] +0.2 %/yr
[2010-2014] -0.02 %/yr
Looking for settlements in Kennebec County? Visit this page: Settlements in Kennebec County, ME
Population of Kennebec County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 3087 | 2958 | 6,045 |
| 5 to 9 | 3315 | 3209 | 6,524 |
| 10 to 14 | 3524 | 3500 | 7,024 |
| 15 to 19 | 3778 | 3639 | 7,417 |
| 20 to 24 | 3727 | 3651 | 7,378 |
| 25 to 29 | 3351 | 3389 | 6,740 |
| 30 to 34 | 3327 | 3468 | 6,795 |
| 35 to 39 | 3267 | 3393 | 6,660 |
| 40 to 44 | 3713 | 3849 | 7,562 |
| 45 to 49 | 4164 | 4439 | 8,603 |
| 50 to 54 | 4810 | 5191 | 10,001 |
| 55 to 59 | 4879 | 5165 | 10,044 |
| 60 to 64 | 4342 | 4577 | 8,919 |
| 65 to 69 | 3572 | 3657 | 7,229 |
| 70 to 74 | 2349 | 2685 | 5,034 |
| 75 to 79 | 1619 | 1964 | 3,583 |
| 80 to 84 | 1176 | 1581 | 2,757 |
| 85+ | 969 | 1828 | 2,797 |
Kennebec 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 | 58059 | 61240 | 119,299 |
| WAC | 57683 | 60872 | 118,555 |
| NHWAC | 56863 | 60043 | 116,906 |
| WA | 56671 | 59860 | 116,531 |
| NHWA | 55913 | 59080 | 114,993 |
| TOM | 1036 | 1035 | 2,071 |
| NHTOM | 972 | 977 | 1,949 |
| H | 910 | 903 | 1,813 |
| IAC | 822 | 855 | 1,677 |
| HWAC | 820 | 829 | 1,649 |
| NHIAC | 774 | 808 | 1,582 |
| AAC | 716 | 835 | 1,551 |
| HWA | 758 | 780 | 1,538 |
| NHAAC | 682 | 805 | 1,487 |
| BAC | 793 | 616 | 1,409 |
| NHBAC | 714 | 562 | 1,276 |
| AA | 462 | 589 | 1,051 |
| NHAA | 441 | 579 | 1,020 |
| BA | 483 | 323 | 806 |
| NHBA | 439 | 290 | 729 |
| IA | 286 | 313 | 599 |
| NHIA | 265 | 294 | 559 |
| HBAC | 79 | 54 | 133 |
| HTOM | 64 | 58 | 122 |
| NAC | 61 | 57 | 118 |
| NHNAC | 57 | 48 | 105 |
| HIAC | 48 | 47 | 95 |
| HBA | 44 | 33 | 77 |
| HAAC | 34 | 30 | 64 |
| NA | 31 | 23 | 54 |
| NHNA | 29 | 20 | 49 |
| HIA | 21 | 19 | 40 |
| HAA | 21 | 10 | 31 |
| HNAC | 4 | 9 | 13 |
| HNA | 2 | 3 | 5 |
• Cumberland County population
50.5 mi, 
213°
• Androscoggin County
27.8 mi, 
231°
• Oxford County
48.1 mi, 
276°
• Hancock County
69.5 mi, 
81°
• Somerset County
76 mi, 
352°
• Knox County
44.4 mi, 
125°
• Waldo County
31.5 mi, 78°
• Sagadahoc County
34.8 mi, 
186°
• Lincoln County
31.8 mi, 
156°
• Franklin County
50.9 mi, 
319°
[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 6 Maine Notes
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