Last official estimated population of Ellis County was 4,155 (year 2014)[1]. This was 0.001% of total US population and 0.1% of total Oklahoma state population. Area of Ellis County is 1,231.9 mi² (=3190.6 km²), in this year population density was 3.37 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Ellis County population in 2026 would be 4,167 [0].
Historical population of Ellis County for period 1880-2014 [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

[1880-1890] NAN %/yr
[1890-1900] +INF %/yr
[1900-1910] +0.96 %/yr
[1910-1920] -2.72 %/yr
[1920-1930] -1.01 %/yr
[1930-1940] -2.17 %/yr
[1940-1950] -1.44 %/yr
[1950-1960] -2.9 %/yr
[1960-1970] -0.62 %/yr
[1970-1980] +0.88 %/yr
[1980-1990] -2.16 %/yr
[1990-2000] -1.01 %/yr
[2000-2005] -0.4 %/yr
[2005-2010] +0.83 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Ellis County? Visit this page: Settlements in Ellis County, OK
Population of Ellis County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 109 | 114 | 223 |
| 5 to 9 | 134 | 134 | 268 |
| 10 to 14 | 151 | 147 | 298 |
| 15 to 19 | 134 | 133 | 267 |
| 20 to 24 | 103 | 106 | 209 |
| 25 to 29 | 98 | 72 | 170 |
| 30 to 34 | 104 | 125 | 229 |
| 35 to 39 | 144 | 119 | 263 |
| 40 to 44 | 106 | 112 | 218 |
| 45 to 49 | 109 | 108 | 217 |
| 50 to 54 | 147 | 140 | 287 |
| 55 to 59 | 164 | 167 | 331 |
| 60 to 64 | 167 | 163 | 330 |
| 65 to 69 | 121 | 123 | 244 |
| 70 to 74 | 88 | 101 | 189 |
| 75 to 79 | 95 | 94 | 189 |
| 80 to 84 | 41 | 59 | 100 |
| 85+ | 37 | 81 | 118 |
Ellis 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 | 1971 | 2014 | 3,985 |
| WA | 1939 | 1983 | 3,922 |
| NH | 1896 | 1944 | 3,840 |
| NHWAC | 1821 | 1871 | 3,692 |
| NHWA | 1793 | 1841 | 3,634 |
| H | 156 | 154 | 310 |
| HWAC | 150 | 143 | 293 |
| HWA | 146 | 142 | 288 |
| IAC | 80 | 79 | 159 |
| NHIAC | 72 | 69 | 141 |
| IA | 55 | 63 | 118 |
| NHIA | 49 | 55 | 104 |
| TOM | 38 | 33 | 71 |
| NHTOM | 34 | 31 | 65 |
| BAC | 29 | 26 | 55 |
| NHBAC | 27 | 24 | 51 |
| BA | 17 | 12 | 29 |
| NHBA | 17 | 11 | 28 |
| AAC | 8 | 13 | 21 |
| NHAAC | 8 | 12 | 20 |
| HIAC | 8 | 10 | 18 |
| HIA | 6 | 8 | 14 |
| AA | 3 | 7 | 10 |
| NHAA | 3 | 6 | 9 |
| HTOM | 4 | 2 | 6 |
| HBAC | 2 | 2 | 4 |
| NAC | 3 | 0 | 3 |
| NHNAC | 3 | 0 | 3 |
| HAAC | 0 | 1 | 1 |
| HBA | 0 | 1 | 1 |
| HAA | 0 | 1 | 1 |
| HNAC | 0 | 0 | 0 |
| NA | 0 | 0 | 0 |
| NHNA | 0 | 0 | 0 |
| HNA | 0 | 0 | 0 |
• Custer County population
58.1 mi,
133°
• Woodward County
29.9 mi,
62°
• Ochiltree County
59.5 mi,
273°
• Woods County
60.3 mi,
54°
• Beaver County
54.5 mi,
311°
• Dewey County
44.5 mi,
112°
• Hemphill County
40.9 mi,
226°
• Harper County
40.1 mi,
6°
• Roger Mills County
35.6 mi,
179°
• Lipscomb County
29.4 mi,
277°
[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
*Woodward, Day Oklahoma Notes
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