Last official estimated population of Lenawee County was 99,649 (year 2014)[1]. This was 0.031% of total US population and 1% of total Michigan state population. Area of Lenawee County is 761.4 mi² (=1972 km²), in this year population density was 130.87 p/mi². If population growth rate would be same as in period 2010-2014 (-0.06%/yr), Lenawee County population in 2025 would be 98,984 [0].
Historical population of Lenawee 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] +28.21 %/yr
[1840-1850] +3.96 %/yr
[1850-1860] +3.75 %/yr
[1860-1870] +1.81 %/yr
[1870-1880] +0.59 %/yr
[1880-1890] +0.02 %/yr
[1890-1900] -0.01 %/yr
[1900-1910] -0.1 %/yr
[1910-1920] -0.03 %/yr
[1920-1930] +0.43 %/yr
[1930-1940] +0.64 %/yr
[1940-1950] +1.98 %/yr
[1950-1960] +1.87 %/yr
[1960-1970] +0.48 %/yr
[1970-1980] +0.98 %/yr
[1980-1990] +0.17 %/yr
[1990-2000] +0.79 %/yr
[2000-2005] +0.48 %/yr
[2005-2010] -0.29 %/yr
[2010-2014] -0.06 %/yr
Looking for settlements in Lenawee County? Visit this page: Settlements in Lenawee County, MI
Population of Lenawee County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2802 | 2707 | 5,509 |
| 5 to 9 | 3078 | 2827 | 5,905 |
| 10 to 14 | 3217 | 2987 | 6,204 |
| 15 to 19 | 3643 | 3296 | 6,939 |
| 20 to 24 | 3577 | 3042 | 6,619 |
| 25 to 29 | 2953 | 2517 | 5,470 |
| 30 to 34 | 3032 | 2578 | 5,610 |
| 35 to 39 | 2992 | 2677 | 5,669 |
| 40 to 44 | 3359 | 3072 | 6,431 |
| 45 to 49 | 3353 | 3155 | 6,508 |
| 50 to 54 | 3694 | 3692 | 7,386 |
| 55 to 59 | 3757 | 3670 | 7,427 |
| 60 to 64 | 3303 | 3463 | 6,766 |
| 65 to 69 | 2798 | 2903 | 5,701 |
| 70 to 74 | 1855 | 2179 | 4,034 |
| 75 to 79 | 1246 | 1489 | 2,735 |
| 80 to 84 | 776 | 1262 | 2,038 |
| 85+ | 708 | 1388 | 2,096 |
Lenawee 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 |
| WAC | 47444 | 47578 | 95,022 |
| WA | 46553 | 46678 | 93,231 |
| NH | 46219 | 45190 | 91,409 |
| NHWAC | 43775 | 44113 | 87,888 |
| NHWA | 43014 | 43331 | 86,345 |
| H | 3924 | 3714 | 7,638 |
| HWAC | 3669 | 3465 | 7,134 |
| HWA | 3539 | 3347 | 6,886 |
| BAC | 2565 | 1166 | 3,731 |
| NHBAC | 2382 | 969 | 3,351 |
| BA | 2104 | 699 | 2,803 |
| NHBA | 1983 | 558 | 2,541 |
| TOM | 947 | 944 | 1,891 |
| NHTOM | 809 | 819 | 1,628 |
| IAC | 689 | 647 | 1,336 |
| NHIAC | 516 | 509 | 1,025 |
| AAC | 357 | 447 | 804 |
| NHAAC | 326 | 408 | 734 |
| IA | 309 | 258 | 567 |
| AA | 204 | 314 | 518 |
| NHAA | 185 | 285 | 470 |
| NHIA | 209 | 191 | 400 |
| HBAC | 183 | 197 | 380 |
| HIAC | 173 | 138 | 311 |
| HTOM | 138 | 125 | 263 |
| HBA | 121 | 141 | 262 |
| HIA | 100 | 67 | 167 |
| NAC | 61 | 36 | 97 |
| NHNAC | 47 | 30 | 77 |
| HAAC | 31 | 39 | 70 |
| HAA | 19 | 29 | 48 |
| NA | 26 | 11 | 37 |
| NHNA | 19 | 6 | 25 |
| HNAC | 14 | 6 | 20 |
| HNA | 7 | 5 | 12 |
• Lucas County population
34.5 mi, 
115°
• Washtenaw County
27.3 mi, 
25°
• Jackson County
30.1 mi, 
323°
• Monroe County
30.2 mi, 
87°
• Wood County
43.8 mi, 
147°
• Hillsdale County
29.3 mi, 
265°
• Fulton County
20.8 mi, 
187°
• Defiance County
45 mi, 
208°
• Williams County
34.9 mi, 
228°
• Henry County
39 mi, 
179°
[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
*Monroe Michigan Notes
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