Last official estimated population of Adams County was 101,470 (year 2014)[1]. This was 0.032% of total US population and 0.8% of total Pennsylvania state population. Area of Adams County is 521.7 mi² (=1351.3 km²), in this year population density was 194.49 p/mi². If population growth rate would be same as in period 2010-2014 (+0.02%/yr), Adams County population in 2024 would be 101,628 [0].
Historical population of Adams County for period 1800-2014 [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
[1800-1810] +1.41 %/yr
[1810-1820] +2.49 %/yr
[1820-1830] +0.99 %/yr
[1830-1840] +0.75 %/yr
[1840-1850] +1.21 %/yr
[1850-1860] +0.75 %/yr
[1860-1870] +0.8 %/yr
[1870-1880] +0.68 %/yr
[1880-1890] +0.31 %/yr
[1890-1900] +0.3 %/yr
[1900-1910] -0.05 %/yr
[1910-1920] +0.08 %/yr
[1920-1930] +0.71 %/yr
[1930-1940] +0.6 %/yr
[1940-1950] +1.15 %/yr
[1950-1960] +1.62 %/yr
[1960-1970] +0.93 %/yr
[1970-1980] +1.84 %/yr
[1980-1990] +1.37 %/yr
[1990-2000] +1.54 %/yr
[2000-2005] +1.57 %/yr
[2005-2010] +0.56 %/yr
[2010-2014] +0.02 %/yr
Looking for settlements in Adams County? Visit this page: Settlements in Adams County, PA
Population of Adams County by age groups male (M) and female (F)[1b]
| Age Gr. | (M) | (F) | Total |
| 0 to 4 | 2715 | 2444 | 5,159 |
| 5 to 9 | 2881 | 2819 | 5,700 |
| 10 to 14 | 3164 | 3061 | 6,225 |
| 15 to 19 | 3467 | 3493 | 6,960 |
| 20 to 24 | 3498 | 3378 | 6,876 |
| 25 to 29 | 2727 | 2595 | 5,322 |
| 30 to 34 | 2699 | 2615 | 5,314 |
| 35 to 39 | 2647 | 2636 | 5,283 |
| 40 to 44 | 3127 | 3174 | 6,301 |
| 45 to 49 | 3580 | 3733 | 7,313 |
| 50 to 54 | 3968 | 3982 | 7,950 |
| 55 to 59 | 3760 | 3921 | 7,681 |
| 60 to 64 | 3459 | 3586 | 7,045 |
| 65 to 69 | 2864 | 3145 | 6,009 |
| 70 to 74 | 2137 | 2341 | 4,478 |
| 75 to 79 | 1492 | 1677 | 3,169 |
| 80 to 84 | 1013 | 1339 | 2,352 |
| 85+ | 917 | 1660 | 2,577 |
Adams 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 | 48408 | 49993 | 98,401 |
| WA | 47823 | 49335 | 97,158 |
| NH | 46480 | 48527 | 95,007 |
| NHWAC | 45088 | 47146 | 92,234 |
| NHWA | 44606 | 46634 | 91,240 |
| H | 3635 | 3072 | 6,707 |
| HWAC | 3320 | 2847 | 6,167 |
| HWA | 3217 | 2701 | 5,918 |
| BAC | 1403 | 1249 | 2,652 |
| NHBAC | 1156 | 1043 | 2,199 |
| BA | 1074 | 850 | 1,924 |
| NHBA | 898 | 740 | 1,638 |
| TOM | 619 | 719 | 1,338 |
| AAC | 531 | 664 | 1,195 |
| NHAAC | 503 | 626 | 1,129 |
| NHTOM | 506 | 565 | 1,071 |
| AA | 385 | 503 | 888 |
| NHAA | 370 | 486 | 856 |
| IAC | 371 | 389 | 760 |
| NHIAC | 225 | 252 | 477 |
| HBAC | 247 | 206 | 453 |
| IA | 196 | 173 | 369 |
| HBA | 176 | 110 | 286 |
| HIAC | 146 | 137 | 283 |
| HTOM | 113 | 154 | 267 |
| HIA | 103 | 85 | 188 |
| NHIA | 93 | 88 | 181 |
| NAC | 36 | 50 | 86 |
| HAAC | 28 | 38 | 66 |
| NHNAC | 20 | 38 | 58 |
| NA | 18 | 19 | 37 |
| HAA | 15 | 17 | 32 |
| HNAC | 16 | 12 | 28 |
| NHNA | 7 | 14 | 21 |
| HNA | 11 | 5 | 16 |
• Baltimore County population
43.5 mi, 
132°
• York County
26.2 mi, 
82°
• Howard County
45.4 mi, 
159°
• Dauphin County
43.7 mi, 
30°
• Cumberland County
20.5 mi, 
353°
• Frederick County
29.2 mi, 
199°
• Carroll County
23.7 mi, 
153°
• Franklin County
27.2 mi, 
278°
• Washington County
36.6 mi, 
239°
• Perry County
36.6 mi, 
355°
[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
*York Pennsylvania Notes
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