Last official estimated population of Waldo County was 38,797 (year 2014)[1]. This was 0.012% of total US population and 2.9% of total Maine state population. Area of Waldo County is 852.8 mi² (=2208.6 km²), in this year population density was 45.50 p/mi². If population growth rate would be same as in period 2010-2014 (+0.01%/yr), Waldo County population in 2026 would be 38,830 [0].
Historical population of Waldo 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] +3.37 %/yr
[1840-1850] +1.3 %/yr
[1850-1860] -2.04 %/yr
[1860-1870] -1.07 %/yr
[1870-1880] -0.61 %/yr
[1880-1890] -1.55 %/yr
[1890-1900] -1.37 %/yr
[1900-1910] -0.34 %/yr
[1910-1920] -0.92 %/yr
[1920-1930] -0.5 %/yr
[1930-1940] +0.42 %/yr
[1940-1950] +0.25 %/yr
[1950-1960] +0.43 %/yr
[1960-1970] +0.3 %/yr
[1970-1980] +1.99 %/yr
[1980-1990] +1.51 %/yr
[1990-2000] +0.94 %/yr
[2000-2005] +1.16 %/yr
[2005-2010] +0.2 %/yr
[2010-2014] +0.01 %/yr
Looking for settlements in Waldo County? Visit this page: Settlements in Waldo County, ME
Population of Waldo County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 992 | 967 | 1,959 |
| 5 to 9 | 1044 | 1034 | 2,078 |
| 10 to 14 | 1160 | 1046 | 2,206 |
| 15 to 19 | 1215 | 1101 | 2,316 |
| 20 to 24 | 1016 | 985 | 2,001 |
| 25 to 29 | 990 | 966 | 1,956 |
| 30 to 34 | 990 | 1085 | 2,075 |
| 35 to 39 | 1103 | 1112 | 2,215 |
| 40 to 44 | 1194 | 1224 | 2,418 |
| 45 to 49 | 1289 | 1287 | 2,576 |
| 50 to 54 | 1392 | 1599 | 2,991 |
| 55 to 59 | 1559 | 1773 | 3,332 |
| 60 to 64 | 1578 | 1669 | 3,247 |
| 65 to 69 | 1411 | 1485 | 2,896 |
| 70 to 74 | 948 | 978 | 1,926 |
| 75 to 79 | 585 | 679 | 1,264 |
| 80 to 84 | 377 | 446 | 823 |
| 85+ | 285 | 487 | 772 |
Waldo 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 | 18889 | 19714 | 38,603 |
| WAC | 18806 | 19583 | 38,389 |
| NHWAC | 18590 | 19399 | 37,989 |
| WA | 18530 | 19308 | 37,838 |
| NHWA | 18331 | 19144 | 37,475 |
| TOM | 283 | 280 | 563 |
| IAC | 284 | 252 | 536 |
| NHTOM | 265 | 260 | 525 |
| NHIAC | 270 | 234 | 504 |
| H | 239 | 209 | 448 |
| HWAC | 216 | 184 | 400 |
| HWA | 199 | 164 | 363 |
| BAC | 178 | 159 | 337 |
| AAC | 132 | 203 | 335 |
| NHAAC | 129 | 197 | 326 |
| NHBAC | 157 | 137 | 294 |
| AA | 96 | 157 | 253 |
| NHAA | 94 | 154 | 248 |
| BA | 102 | 92 | 194 |
| IA | 105 | 78 | 183 |
| NHIA | 100 | 70 | 170 |
| NHBA | 90 | 79 | 169 |
| HBAC | 21 | 22 | 43 |
| HTOM | 18 | 20 | 38 |
| NAC | 18 | 18 | 36 |
| HIAC | 14 | 18 | 32 |
| NHNAC | 13 | 16 | 29 |
| HBA | 12 | 13 | 25 |
| NA | 12 | 8 | 20 |
| NHNA | 9 | 7 | 16 |
| HIA | 5 | 8 | 13 |
| HAAC | 3 | 6 | 9 |
| HNAC | 5 | 2 | 7 |
| HAA | 2 | 3 | 5 |
| HNA | 3 | 1 | 4 |
• Cumberland County population
76.2 mi, 
230°
• Penobscot County
66.6 mi, 
20°
• Kennebec County
31.5 mi, 
258°
• Androscoggin County
57.7 mi, 
246°
• Oxford County
78.6 mi, 
269°
• Hancock County
38.1 mi, 
83°
• Knox County
32.4 mi, 
171°
• Sagadahoc County
53.6 mi, 
220°
• Lincoln County
39.9 mi, 
207°
• Franklin County
71.8 mi, 
296°
[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 Maine Notes
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