Last official estimated population of Phelps County was 45,316 (year 2014)[1]. This was 0.014% of total US population and 0.7% of total Missouri state population. Area of Phelps County is 674.3 mi² (=1746.5 km²), in this year population density was 67.20 p/mi². If population growth rate would be same as in period 2010-2014 (+0.09%/yr), Phelps County population in 2026 would be 45,799 [0].
Historical population of Phelps County for period 1860-2014 [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

[1860-1870] +6.28 %/yr
[1870-1880] +1.81 %/yr
[1880-1890] +0.05 %/yr
[1890-1900] +1.17 %/yr
[1900-1910] +1.08 %/yr
[1910-1920] -0.55 %/yr
[1920-1930] +0.24 %/yr
[1930-1940] +1.31 %/yr
[1940-1950] +2.12 %/yr
[1950-1960] +1.68 %/yr
[1960-1970] +1.5 %/yr
[1970-1980] +1.33 %/yr
[1980-1990] +0.47 %/yr
[1990-2000] +1.23 %/yr
[2000-2005] +1.7 %/yr
[2005-2010] +0.83 %/yr
[2010-2014] +0.09 %/yr
Looking for settlements in Phelps County? Visit this page: Settlements in Phelps County, MO
Population of Phelps County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1345 | 1255 | 2,600 |
| 5 to 9 | 1417 | 1280 | 2,697 |
| 10 to 14 | 1338 | 1242 | 2,580 |
| 15 to 19 | 2296 | 1462 | 3,758 |
| 20 to 24 | 3717 | 2088 | 5,805 |
| 25 to 29 | 1457 | 1281 | 2,738 |
| 30 to 34 | 1367 | 1247 | 2,614 |
| 35 to 39 | 1135 | 1144 | 2,279 |
| 40 to 44 | 1181 | 1148 | 2,329 |
| 45 to 49 | 1212 | 1276 | 2,488 |
| 50 to 54 | 1445 | 1544 | 2,989 |
| 55 to 59 | 1394 | 1478 | 2,872 |
| 60 to 64 | 1181 | 1228 | 2,409 |
| 65 to 69 | 1027 | 1051 | 2,078 |
| 70 to 74 | 745 | 884 | 1,629 |
| 75 to 79 | 545 | 660 | 1,205 |
| 80 to 84 | 380 | 476 | 856 |
| 85+ | 323 | 598 | 921 |
Phelps 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 | 22878 | 20858 | 43,736 |
| WAC | 21718 | 20072 | 41,790 |
| NHWAC | 21185 | 19664 | 40,849 |
| WA | 21125 | 19626 | 40,751 |
| NHWA | 20629 | 19253 | 39,882 |
| AAC | 1001 | 755 | 1,756 |
| NHAAC | 991 | 726 | 1,717 |
| AA | 852 | 644 | 1,496 |
| BAC | 902 | 589 | 1,491 |
| NHAA | 844 | 624 | 1,468 |
| NHBAC | 858 | 557 | 1,415 |
| H | 627 | 484 | 1,111 |
| BA | 679 | 416 | 1,095 |
| TOM | 629 | 463 | 1,092 |
| NHBA | 650 | 400 | 1,050 |
| NHTOM | 586 | 423 | 1,009 |
| HWAC | 533 | 408 | 941 |
| HWA | 496 | 373 | 869 |
| IAC | 476 | 360 | 836 |
| NHIAC | 400 | 308 | 708 |
| IA | 195 | 169 | 364 |
| NHIA | 149 | 136 | 285 |
| HIAC | 76 | 52 | 128 |
| NAC | 52 | 45 | 97 |
| NHNAC | 44 | 40 | 84 |
| HTOM | 43 | 40 | 83 |
| HIA | 46 | 33 | 79 |
| HBAC | 44 | 32 | 76 |
| NA | 25 | 24 | 49 |
| HBA | 29 | 16 | 45 |
| NHNA | 20 | 22 | 42 |
| HAAC | 10 | 29 | 39 |
| HAA | 8 | 20 | 28 |
| HNAC | 8 | 5 | 13 |
| HNA | 5 | 2 | 7 |
• Pulaski County population
22.9 mi,
262°
• Laclede County
46.2 mi,
252°
• Texas County
39.3 mi,
194°
• Washington County
49 mi,
83°
• Miller County
42.4 mi,
304°
• Crawford County
26.9 mi,
75°
• Dent County
24.5 mi,
137°
• Gasconade County
42.6 mi,
21°
• Osage County
41.5 mi,
354°
• Maries County
21.7 mi,
340°
[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
*Crawford, Pulaski Missouri Notes
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