Last official estimated population of Quay County was 9,050 (year 2014)[1]. This was 0.003% of total US population and 0.4% of total New Mexico state population. Area of Quay County is 2,881.5 mi² (=7463.1 km²), in this year population density was 3.14 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Quay County population in 2026 would be 9,077 [0].
Historical population of Quay County for period 1890-2014 [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
[1890-1900] NAN %/yr
[1900-1910] +INF %/yr
[1910-1920] -3.5 %/yr
[1920-1930] +0.36 %/yr
[1930-1940] +1.13 %/yr
[1940-1950] +1.44 %/yr
[1950-1960] -1.28 %/yr
[1960-1970] -1.18 %/yr
[1970-1980] -0.3 %/yr
[1980-1990] +0.23 %/yr
[1990-2000] -0.7 %/yr
[2000-2005] -1.97 %/yr
[2005-2010] -0.2 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Quay County? Visit this page: Settlements in Quay County, NM
Population of Quay County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 235 | 299 | 534 |
| 5 to 9 | 245 | 218 | 463 |
| 10 to 14 | 267 | 266 | 533 |
| 15 to 19 | 236 | 203 | 439 |
| 20 to 24 | 219 | 210 | 429 |
| 25 to 29 | 175 | 169 | 344 |
| 30 to 34 | 233 | 251 | 484 |
| 35 to 39 | 197 | 198 | 395 |
| 40 to 44 | 186 | 242 | 428 |
| 45 to 49 | 257 | 253 | 510 |
| 50 to 54 | 291 | 309 | 600 |
| 55 to 59 | 316 | 345 | 661 |
| 60 to 64 | 312 | 354 | 666 |
| 65 to 69 | 315 | 340 | 655 |
| 70 to 74 | 261 | 269 | 530 |
| 75 to 79 | 184 | 187 | 371 |
| 80 to 84 | 128 | 146 | 274 |
| 85+ | 81 | 104 | 185 |
Quay 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 | 3889 | 4113 | 8,002 |
| WA | 3797 | 4027 | 7,824 |
| NH | 2305 | 2394 | 4,699 |
| NHWAC | 2151 | 2253 | 4,404 |
| NHWA | 2099 | 2203 | 4,302 |
| H | 1833 | 1969 | 3,802 |
| HWAC | 1738 | 1860 | 3,598 |
| HWA | 1698 | 1824 | 3,522 |
| IAC | 155 | 157 | 312 |
| BAC | 108 | 109 | 217 |
| IA | 105 | 110 | 215 |
| TOM | 98 | 95 | 193 |
| HIAC | 83 | 92 | 175 |
| BA | 79 | 75 | 154 |
| NHBAC | 75 | 75 | 150 |
| AAC | 75 | 68 | 143 |
| NHIAC | 72 | 65 | 137 |
| HIA | 58 | 72 | 130 |
| NHBA | 56 | 57 | 113 |
| NHTOM | 56 | 53 | 109 |
| AA | 53 | 51 | 104 |
| NHAAC | 55 | 46 | 101 |
| NHIA | 47 | 38 | 85 |
| HTOM | 42 | 42 | 84 |
| NHAA | 44 | 39 | 83 |
| HBAC | 33 | 34 | 67 |
| HAAC | 20 | 22 | 42 |
| HBA | 23 | 18 | 41 |
| NAC | 12 | 11 | 23 |
| HAA | 9 | 12 | 21 |
| NHNAC | 8 | 8 | 16 |
| NA | 6 | 5 | 11 |
| HNAC | 4 | 3 | 7 |
| NHNA | 3 | 4 | 7 |
| HNA | 3 | 1 | 4 |
• Curry County population
38.6 mi, 
162°
• San Miguel County
75.3 mi, 
289°
• Roosevelt County
75.1 mi, 
177°
• Deaf Smith County
54.4 mi, 
102°
• Parmer County
58.7 mi, 
132°
• Hartley County
73.2 mi, 
46°
• Guadalupe County
71.9 mi, 
256°
• Oldham County
57.4 mi, 
69°
• De Baca County
69.6 mi, 
222°
• Harding County
54.7 mi, 
341°
[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
*Guadalupe, Union; San Miguel New Mexico Notes
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