Last official estimated population of Alfalfa County was 5,628 (year 2014)[1]. This was 0.002% of total US population and 0.1% of total Oklahoma state population. Area of Alfalfa County is 881.3 mi² (=2282.7 km²), in this year population density was 6.39 p/mi². If population growth rate would be same as in period 2010-2014 (-0.06%/yr), Alfalfa County population in 2025 would be 5,590 [0].
Historical population of Alfalfa 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] +1.22 %/yr
[1910-1920] -1.09 %/yr
[1920-1930] -0.65 %/yr
[1930-1940] -0.75 %/yr
[1940-1950] -2.74 %/yr
[1950-1960] -2.34 %/yr
[1960-1970] -1.55 %/yr
[1970-1980] -0.21 %/yr
[1980-1990] -0.98 %/yr
[1990-2000] -0.52 %/yr
[2000-2005] -1.3 %/yr
[2005-2010] -0.23 %/yr
[2010-2014] -0.06 %/yr
Looking for settlements in Alfalfa County? Visit this page: Settlements in Alfalfa County, OK
Population of Alfalfa County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 176 | 137 | 313 |
| 5 to 9 | 176 | 132 | 308 |
| 10 to 14 | 167 | 138 | 305 |
| 15 to 19 | 162 | 149 | 311 |
| 20 to 24 | 151 | 111 | 262 |
| 25 to 29 | 171 | 138 | 309 |
| 30 to 34 | 195 | 130 | 325 |
| 35 to 39 | 302 | 124 | 426 |
| 40 to 44 | 333 | 108 | 441 |
| 45 to 49 | 319 | 132 | 451 |
| 50 to 54 | 342 | 167 | 509 |
| 55 to 59 | 249 | 159 | 408 |
| 60 to 64 | 232 | 157 | 389 |
| 65 to 69 | 161 | 129 | 290 |
| 70 to 74 | 123 | 133 | 256 |
| 75 to 79 | 106 | 111 | 217 |
| 80 to 84 | 68 | 73 | 141 |
| 85+ | 49 | 80 | 129 |
Alfalfa 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 | 3286 | 2217 | 5,503 |
| WAC | 3043 | 2221 | 5,264 |
| WA | 2965 | 2176 | 5,141 |
| NHWAC | 2872 | 2143 | 5,015 |
| NHWA | 2798 | 2107 | 4,905 |
| IAC | 229 | 103 | 332 |
| NHIAC | 211 | 87 | 298 |
| BAC | 270 | 24 | 294 |
| H | 196 | 91 | 287 |
| NHBAC | 262 | 20 | 282 |
| HWAC | 171 | 78 | 249 |
| BA | 242 | 5 | 247 |
| NHBA | 236 | 4 | 240 |
| IA | 169 | 67 | 236 |
| HWA | 167 | 69 | 236 |
| NHIA | 153 | 58 | 211 |
| TOM | 88 | 51 | 139 |
| NHTOM | 84 | 42 | 126 |
| AAC | 29 | 11 | 40 |
| NHAAC | 27 | 8 | 35 |
| HIAC | 18 | 16 | 34 |
| HIA | 16 | 9 | 25 |
| AA | 16 | 8 | 24 |
| NHAA | 14 | 5 | 19 |
| HTOM | 4 | 9 | 13 |
| HBAC | 8 | 4 | 12 |
| HBA | 6 | 1 | 7 |
| HAAC | 2 | 3 | 5 |
| HAA | 2 | 3 | 5 |
| NAC | 2 | 2 | 4 |
| NA | 2 | 1 | 3 |
| NHNAC | 1 | 2 | 3 |
| NHNA | 1 | 1 | 2 |
| HNAC | 1 | 0 | 1 |
| HNA | 1 | 0 | 1 |
• Garfield County population
38.4 mi, 
129°
• Sumner County
57.7 mi, 
52°
• Woodward County
56.8 mi, 
248°
• Kingfisher County
58.1 mi, 
158°
• Woods County
29.9 mi, 
269°
• Kingman County
57.7 mi, 
9°
• Major County
31.2 mi, 
202°
• Harper County
34.7 mi, 
24°
• Barber County
39.5 mi, 
329°
• Grant County
29.9 mi, 
82°
[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
*Woods Oklahoma Notes
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