Last official estimated population of Juniata County was 24,541 (year 2014)[1]. This was 0.008% of total US population and 0.2% of total Pennsylvania state population. Area of Juniata County is 393.5 mi² (=1019.2 km²), in this year population density was 62.36 p/mi². If population growth rate would be same as in period 2010-2014 (-0.1%/yr), Juniata County population in 2026 would be 24,258 [0].
Historical population of Juniata County for period 1840-2014 [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
[1840-1850] +1.63 %/yr
[1850-1860] +2.69 %/yr
[1860-1870] +0.24 %/yr
[1870-1880] +0.47 %/yr
[1880-1890] -0.9 %/yr
[1890-1900] -0.37 %/yr
[1900-1910] -0.67 %/yr
[1910-1920] -0.37 %/yr
[1920-1930] -0.1 %/yr
[1930-1940] +0.71 %/yr
[1940-1950] -0.08 %/yr
[1950-1960] +0.41 %/yr
[1960-1970] +0.52 %/yr
[1970-1980] +1.39 %/yr
[1980-1990] +0.72 %/yr
[1990-2000] +1.01 %/yr
[2000-2005] +1.01 %/yr
[2005-2010] +0.54 %/yr
[2010-2014] -0.1 %/yr
Looking for settlements in Juniata County? Visit this page: Settlements in Juniata County, PA
Population of Juniata County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 686 | 679 | 1,365 |
| 5 to 9 | 802 | 748 | 1,550 |
| 10 to 14 | 876 | 809 | 1,685 |
| 15 to 19 | 736 | 732 | 1,468 |
| 20 to 24 | 681 | 654 | 1,335 |
| 25 to 29 | 678 | 678 | 1,356 |
| 30 to 34 | 698 | 651 | 1,349 |
| 35 to 39 | 690 | 681 | 1,371 |
| 40 to 44 | 790 | 746 | 1,536 |
| 45 to 49 | 841 | 808 | 1,649 |
| 50 to 54 | 943 | 901 | 1,844 |
| 55 to 59 | 905 | 916 | 1,821 |
| 60 to 64 | 786 | 763 | 1,549 |
| 65 to 69 | 762 | 720 | 1,482 |
| 70 to 74 | 570 | 602 | 1,172 |
| 75 to 79 | 418 | 476 | 894 |
| 80 to 84 | 294 | 402 | 696 |
| 85+ | 213 | 461 | 674 |
Juniata 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 | 12175 | 12200 | 24,375 |
| WA | 12073 | 12105 | 24,178 |
| NH | 11927 | 12096 | 24,023 |
| NHWAC | 11784 | 11914 | 23,698 |
| NHWA | 11704 | 11827 | 23,531 |
| H | 442 | 331 | 773 |
| HWAC | 391 | 286 | 677 |
| HWA | 369 | 278 | 647 |
| BAC | 162 | 143 | 305 |
| NHBAC | 131 | 124 | 255 |
| TOM | 115 | 103 | 218 |
| BA | 106 | 91 | 197 |
| NHTOM | 88 | 94 | 182 |
| AAC | 60 | 104 | 164 |
| NHBA | 86 | 77 | 163 |
| NHAAC | 52 | 102 | 154 |
| IAC | 75 | 77 | 152 |
| AA | 36 | 88 | 124 |
| NHAA | 34 | 88 | 122 |
| NHIAC | 42 | 46 | 88 |
| IA | 35 | 38 | 73 |
| HIAC | 33 | 31 | 64 |
| HBAC | 31 | 19 | 50 |
| HIA | 22 | 28 | 50 |
| HTOM | 27 | 9 | 36 |
| HBA | 20 | 14 | 34 |
| NHIA | 13 | 10 | 23 |
| NAC | 14 | 7 | 21 |
| NHNAC | 8 | 5 | 13 |
| HAAC | 8 | 2 | 10 |
| HNAC | 6 | 2 | 8 |
| NA | 4 | 2 | 6 |
| HNA | 2 | 2 | 4 |
| NHNA | 2 | 0 | 2 |
| HAA | 2 | 0 | 2 |
• Dauphin County population
33 mi, 
104°
• Cumberland County
26.3 mi, 
164°
• Centre County
35.1 mi, 
318°
• Franklin County
45.1 mi, 
202°
• Northumberland County
42.4 mi, 
58°
• Mifflin County
14.1 mi, 
290°
• Perry County
11.6 mi, 
142°
• Huntingdon County
30.8 mi, 
255°
• Union County
34.9 mi, 
31°
• Snyder County
23.1 mi, 
47°
[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
*Mifflin Pennsylvania Notes
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