Last official estimated population of Clay County was 16,057 (year 2014)[1]. This was 0.005% of total US population and 0.5% of total Arkansas state population. Area of Clay County is 641.4 mi² (=1661.3 km²), in this year population density was 25.03 p/mi². If population growth rate would be same as in period 2010-2014 (-0.04%/yr), Clay County population in 2026 would be 15,979 [0].
Historical population of Clay 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] +5.4 %/yr
[1890-1900] +2.68 %/yr
[1900-1910] +4.08 %/yr
[1910-1920] +1.42 %/yr
[1920-1930] +0 %/yr
[1930-1940] +0.4 %/yr
[1940-1950] -0.62 %/yr
[1950-1960] -2.24 %/yr
[1960-1970] -1.24 %/yr
[1970-1980] +0.94 %/yr
[1980-1990] -1.29 %/yr
[1990-2000] -0.29 %/yr
[2000-2005] -0.93 %/yr
[2005-2010] -0.86 %/yr
[2010-2014] -0.04 %/yr
Looking for settlements in Clay County? Visit this page: Settlements in Clay County, AR
Population of Clay County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 338 | 311 | 649 |
| 5 to 9 | 448 | 449 | 897 |
| 10 to 14 | 484 | 461 | 945 |
| 15 to 19 | 475 | 434 | 909 |
| 20 to 24 | 492 | 446 | 938 |
| 25 to 29 | 381 | 380 | 761 |
| 30 to 34 | 388 | 399 | 787 |
| 35 to 39 | 442 | 424 | 866 |
| 40 to 44 | 444 | 458 | 902 |
| 45 to 49 | 531 | 507 | 1,038 |
| 50 to 54 | 533 | 558 | 1,091 |
| 55 to 59 | 540 | 536 | 1,076 |
| 60 to 64 | 479 | 542 | 1,021 |
| 65 to 69 | 461 | 511 | 972 |
| 70 to 74 | 365 | 466 | 831 |
| 75 to 79 | 290 | 339 | 629 |
| 80 to 84 | 173 | 255 | 428 |
| 85+ | 131 | 247 | 378 |
Clay 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 | 7294 | 7616 | 14,910 |
| NH | 7239 | 7602 | 14,841 |
| WA | 7206 | 7519 | 14,725 |
| NHWAC | 7145 | 7505 | 14,650 |
| NHWA | 7061 | 7413 | 14,474 |
| H | 156 | 121 | 277 |
| HWAC | 149 | 111 | 260 |
| HWA | 145 | 106 | 251 |
| TOM | 96 | 104 | 200 |
| NHTOM | 91 | 98 | 189 |
| IAC | 75 | 100 | 175 |
| BAC | 86 | 86 | 172 |
| NHBAC | 84 | 82 | 166 |
| NHIAC | 70 | 90 | 160 |
| BA | 50 | 44 | 94 |
| NHBA | 50 | 43 | 93 |
| IA | 25 | 41 | 66 |
| AAC | 33 | 26 | 59 |
| NHIA | 22 | 36 | 58 |
| NHAAC | 29 | 23 | 52 |
| AA | 18 | 12 | 30 |
| NHAA | 15 | 10 | 25 |
| HIAC | 5 | 10 | 15 |
| HTOM | 5 | 6 | 11 |
| NAC | 4 | 6 | 10 |
| HIA | 3 | 5 | 8 |
| NHNAC | 3 | 5 | 8 |
| HAAC | 4 | 3 | 7 |
| HBAC | 2 | 4 | 6 |
| HAA | 3 | 2 | 5 |
| NA | 0 | 3 | 3 |
| HNAC | 1 | 1 | 2 |
| NHNA | 0 | 2 | 2 |
| HBA | 0 | 1 | 1 |
| HNA | 0 | 1 | 1 |
• Craighead County population
39.1 mi,
197°
• Butler County
24.1 mi,
2°
• Greene County
18.9 mi,
205°
• Dunklin County
24.8 mi,
126°
• Stoddard County
42.5 mi,
37°
• New Madrid County
45.2 mi,
69°
• Pemiscot County
36.9 mi,
107°
• Randolph County
34 mi,
266°
• Lawrence County
44.2 mi,
239°
• Ripley County
31.6 mi,
308°
[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
*Greene, Randolph Arkansas Notes
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