Last official estimated population of Clinton County was 39,230 (year 2014)[1]. This was 0.012% of total US population and 0.3% of total Pennsylvania state population. Area of Clinton County is 896.9 mi² (=2323 km²), in this year population density was 43.74 p/mi². If population growth rate would be same as in period 2010-2014 (-0.01%/yr), Clinton County population in 2026 would be 39,206 [0].
Historical population of Clinton 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] +3.02 %/yr
[1850-1860] +4.69 %/yr
[1860-1870] +2.73 %/yr
[1870-1880] +1.25 %/yr
[1880-1890] +0.88 %/yr
[1890-1900] +0.18 %/yr
[1900-1910] +0.78 %/yr
[1910-1920] +0.62 %/yr
[1920-1930] -0.37 %/yr
[1930-1940] +0.67 %/yr
[1940-1950] +0.56 %/yr
[1950-1960] +0.29 %/yr
[1960-1970] +0.03 %/yr
[1970-1980] +0.33 %/yr
[1980-1990] -0.47 %/yr
[1990-2000] +0.19 %/yr
[2000-2005] +0.28 %/yr
[2005-2010] +0.42 %/yr
[2010-2014] -0.01 %/yr
Looking for settlements in Clinton County? Visit this page: Settlements in Clinton County, PA
Population of Clinton County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 1101 | 1091 | 2,192 |
| 5 to 9 | 1157 | 1096 | 2,253 |
| 10 to 14 | 1126 | 1137 | 2,263 |
| 15 to 19 | 1604 | 1704 | 3,308 |
| 20 to 24 | 2043 | 2369 | 4,412 |
| 25 to 29 | 1261 | 906 | 2,167 |
| 30 to 34 | 1039 | 1036 | 2,075 |
| 35 to 39 | 990 | 992 | 1,982 |
| 40 to 44 | 1160 | 1136 | 2,296 |
| 45 to 49 | 1124 | 1125 | 2,249 |
| 50 to 54 | 1313 | 1303 | 2,616 |
| 55 to 59 | 1338 | 1413 | 2,751 |
| 60 to 64 | 1143 | 1189 | 2,332 |
| 65 to 69 | 997 | 1079 | 2,076 |
| 70 to 74 | 770 | 851 | 1,621 |
| 75 to 79 | 568 | 705 | 1,273 |
| 80 to 84 | 386 | 540 | 926 |
| 85+ | 336 | 617 | 953 |
Clinton 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 | 19152 | 20031 | 39,183 |
| WAC | 18889 | 19799 | 38,688 |
| WA | 18726 | 19622 | 38,348 |
| NHWAC | 18614 | 19556 | 38,170 |
| NHWA | 18463 | 19386 | 37,849 |
| BAC | 490 | 399 | 889 |
| NHBAC | 464 | 389 | 853 |
| BA | 409 | 296 | 705 |
| NHBA | 390 | 290 | 680 |
| H | 304 | 258 | 562 |
| HWAC | 275 | 243 | 518 |
| HWA | 263 | 236 | 499 |
| TOM | 169 | 191 | 360 |
| NHTOM | 157 | 183 | 340 |
| AAC | 153 | 181 | 334 |
| NHAAC | 149 | 181 | 330 |
| AA | 113 | 140 | 253 |
| NHAA | 111 | 140 | 251 |
| IAC | 82 | 91 | 173 |
| NHIAC | 70 | 79 | 149 |
| IA | 27 | 31 | 58 |
| NHIA | 20 | 23 | 43 |
| HBAC | 26 | 10 | 36 |
| NAC | 16 | 14 | 30 |
| NHNAC | 15 | 13 | 28 |
| HBA | 19 | 6 | 25 |
| HIAC | 12 | 12 | 24 |
| NA | 12 | 9 | 21 |
| HTOM | 12 | 8 | 20 |
| NHNA | 11 | 9 | 20 |
| HIA | 7 | 8 | 15 |
| HAAC | 4 | 0 | 4 |
| HAA | 2 | 0 | 2 |
| HNAC | 1 | 1 | 2 |
| HNA | 1 | 0 | 1 |
• Centre County population
25.4 mi,
204°
• Lycoming County
31.6 mi,
77°
• Clearfield County
46.1 mi,
248°
• Mifflin County
44.5 mi,
180°
• Union County
36.6 mi,
122°
• Tioga County
41.3 mi,
29°
• Snyder County
45.3 mi,
138°
• Juniata County
51.1 mi,
165°
• Potter County
37 mi,
339°
• Cameron County
31.5 mi,
295°
[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
See note 11 Pennsylvania Notes
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