Last official estimated population of Oneida County was 4,296 (year 2014)[1]. This was 0.001% of total US population and 0.3% of total Idaho state population. Area of Oneida County is 1,201.3 mi² (=3111.4 km²), in this year population density was 3.58 p/mi². If population growth rate would be same as in period 2010-2014 (+0.06%/yr), Oneida County population in 2021 would be 4,314 [0].
Historical population of Oneida County for period 1870-2014 [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
[1870-1880] +13.74 %/yr
[1880-1890] -0.21 %/yr
[1890-1900] +2.74 %/yr
[1900-1910] +5.44 %/yr
[1910-1920] -7.82 %/yr
[1920-1930] -1.35 %/yr
[1930-1940] -0.8 %/yr
[1940-1950] -2.09 %/yr
[1950-1960] -1.95 %/yr
[1960-1970] -2.27 %/yr
[1970-1980] +1.3 %/yr
[1980-1990] +0.7 %/yr
[1990-2000] +1.68 %/yr
[2000-2005] +0.06 %/yr
[2005-2010] +0.71 %/yr
[2010-2014] +0.06 %/yr
Looking for settlements in Oneida County? Visit this page: Settlements in Oneida County, ID
Population of Oneida County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 118 | 161 | 279 |
| 5 to 9 | 170 | 170 | 340 |
| 10 to 14 | 183 | 174 | 357 |
| 15 to 19 | 162 | 138 | 300 |
| 20 to 24 | 102 | 80 | 182 |
| 25 to 29 | 69 | 88 | 157 |
| 30 to 34 | 108 | 126 | 234 |
| 35 to 39 | 116 | 115 | 231 |
| 40 to 44 | 114 | 107 | 221 |
| 45 to 49 | 99 | 109 | 208 |
| 50 to 54 | 126 | 137 | 263 |
| 55 to 59 | 170 | 151 | 321 |
| 60 to 64 | 152 | 133 | 285 |
| 65 to 69 | 122 | 118 | 240 |
| 70 to 74 | 84 | 89 | 173 |
| 75 to 79 | 78 | 70 | 148 |
| 80 to 84 | 50 | 64 | 114 |
| 85+ | 51 | 80 | 131 |
Oneida 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 | 2046 | 2074 | 4,120 |
| WA | 2025 | 2052 | 4,077 |
| NH | 1999 | 2015 | 4,014 |
| NHWAC | 1975 | 1983 | 3,958 |
| NHWA | 1958 | 1964 | 3,922 |
| H | 75 | 95 | 170 |
| HWAC | 71 | 91 | 162 |
| HWA | 67 | 88 | 155 |
| TOM | 23 | 23 | 46 |
| IAC | 23 | 23 | 46 |
| NHIAC | 19 | 19 | 38 |
| AAC | 13 | 24 | 37 |
| NHTOM | 17 | 19 | 36 |
| NHAAC | 11 | 21 | 32 |
| AA | 8 | 19 | 27 |
| BAC | 15 | 10 | 25 |
| NHAA | 8 | 17 | 25 |
| NHBAC | 10 | 10 | 20 |
| IA | 10 | 9 | 19 |
| NHIA | 10 | 8 | 18 |
| BA | 6 | 6 | 12 |
| HTOM | 6 | 4 | 10 |
| NHBA | 4 | 6 | 10 |
| HIAC | 4 | 4 | 8 |
| HBAC | 5 | 0 | 5 |
| HAAC | 2 | 3 | 5 |
| NAC | 2 | 3 | 5 |
| NHNAC | 2 | 2 | 4 |
| NHNA | 2 | 1 | 3 |
| NA | 2 | 1 | 3 |
| HBA | 2 | 0 | 2 |
| HAA | 0 | 2 | 2 |
| HNAC | 0 | 1 | 1 |
| HIA | 0 | 1 | 1 |
| HNA | 0 | 0 | 0 |
• Weber County population
71.3 mi, 
152°
• Cache County
50.5 mi, 
127°
• Bannock County
38.2 mi, 
22°
• Box Elder County
47.2 mi, 
214°
• Bingham County
71.6 mi, 
4°
• Cassia County
57 mi, 
276°
• Franklin County
35.7 mi, 
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• Power County
38.9 mi, 
334°
• Caribou County
64.8 mi, 
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• Bear Lake County
61.4 mi, 
83°
[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
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